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Conserved domains on  [gi|2125461122|ref|NP_001383883|]
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synaptotagmin-1 [Gallus gallus]

Protein Classification

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
C2B_Synaptotagmin-1 cd08402
C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking ...
276-411 2.85e-90

C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of the class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis. It, like synaptotagmin-2, has an N-glycosylated N-terminus. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


:

Pssm-ID: 176047 [Multi-domain]  Cd Length: 136  Bit Score: 269.27  E-value: 2.85e-90
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd08402     1 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKRTLNPYYNESFSFEVPFEQI 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTLQ 411
Cdd:cd08402    81 QKVHLIVTVLDYDRIGKNDPIGKVVLGCNATGAELRHWSDMLASPRRPIAQWHTLQ 136
C2A_Synaptotagmin-1-5-6-9-10 cd08385
C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a ...
145-267 3.85e-87

C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis as do synaptotagmins 5, 6, and 10. It is distinguished from the other synaptotagmins by having an N-glycosylated N-terminus. Synaptotagmins 5, 6, and 10, members of class 3 synaptotagmins, are located primarily in the brain and localized to the active zone and plasma membrane. They is distinguished from the other synaptotagmins by having disulfide bonds at its N-terminus. Synaptotagmin 6 also regulates the acrosome reaction, a unique Ca2+-regulated exocytosis, in sperm. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


:

Pssm-ID: 176031 [Multi-domain]  Cd Length: 124  Bit Score: 260.66  E-value: 3.85e-87
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELGG 224
Cdd:cd08385     2 LGKLQFSLDYDFQSNQLTVGIIQAADLPAMDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFTFKVPYSELGN 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 2125461122 225 KTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQS 267
Cdd:cd08385    82 KTLVFSVYDFDRFSKHDLIGEVRVPLLTVDLGHVTEEWRDLES 124
Syt1_N cd21963
N-terminal domain of synaptotagmin-1 (Syt1) and similar proteins; Syt1, also called ...
6-115 1.17e-29

N-terminal domain of synaptotagmin-1 (Syt1) and similar proteins; Syt1, also called synaptotagmin I (SytI), or p65, is a calcium sensor that participates in triggering neurotransmitter release at the synapse. It may have a regulatory role in the membrane interactions during trafficking of synaptic vesicles at the active zone of the synapse. Syt1 binds acidic phospholipids with a specificity that requires the presence of both an acidic head group and a diacyl backbone. A Ca(2+)-dependent interaction between synaptotagmin and putative receptors for activated protein kinase C has also been reported. It can bind to at least three additional proteins in a Ca(2+)-independent manner; these are neurexins, syntaxin and AP2. Syt1 also plays a role in dendrite formation by melanocytes. The model corresponds to N-terminal domain of Syt1, which is a recognition domain responsible for the binding of botulinum neurotoxin B (BoNT B).


:

Pssm-ID: 409248  Cd Length: 108  Bit Score: 111.13  E-value: 1.17e-29
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122   6 HHEALAAPPATTVAAALPSNVTEPAAPGGGggKEDAFSNLKKKFMNELNKIPLPPWALIAIAIVAVLLILTCCFCLCKKC 85
Cdd:cd21963     1 HHEALAAPPVTTVAAVLPGNATEAAGPGGG--KEDAFSKLKDKFMNELHKIPLPPWALIAIAIVAVLLILTCCFCICKKC 78
                          90       100       110
                  ....*....|....*....|....*....|
gi 2125461122  86 LFKKKNKKKGKEKGGKNAINMKDVKDLGKT 115
Cdd:cd21963    79 LFKKKNKKKGKEKGGKNAINMKDVKDLGKT 108
 
Name Accession Description Interval E-value
C2B_Synaptotagmin-1 cd08402
C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking ...
276-411 2.85e-90

C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of the class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis. It, like synaptotagmin-2, has an N-glycosylated N-terminus. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176047 [Multi-domain]  Cd Length: 136  Bit Score: 269.27  E-value: 2.85e-90
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd08402     1 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKRTLNPYYNESFSFEVPFEQI 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTLQ 411
Cdd:cd08402    81 QKVHLIVTVLDYDRIGKNDPIGKVVLGCNATGAELRHWSDMLASPRRPIAQWHTLQ 136
C2A_Synaptotagmin-1-5-6-9-10 cd08385
C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a ...
145-267 3.85e-87

C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis as do synaptotagmins 5, 6, and 10. It is distinguished from the other synaptotagmins by having an N-glycosylated N-terminus. Synaptotagmins 5, 6, and 10, members of class 3 synaptotagmins, are located primarily in the brain and localized to the active zone and plasma membrane. They is distinguished from the other synaptotagmins by having disulfide bonds at its N-terminus. Synaptotagmin 6 also regulates the acrosome reaction, a unique Ca2+-regulated exocytosis, in sperm. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176031 [Multi-domain]  Cd Length: 124  Bit Score: 260.66  E-value: 3.85e-87
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELGG 224
Cdd:cd08385     2 LGKLQFSLDYDFQSNQLTVGIIQAADLPAMDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFTFKVPYSELGN 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 2125461122 225 KTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQS 267
Cdd:cd08385    82 KTLVFSVYDFDRFSKHDLIGEVRVPLLTVDLGHVTEEWRDLES 124
C2 pfam00168
C2 domain;
159-265 1.62e-33

C2 domain;


Pssm-ID: 425499 [Multi-domain]  Cd Length: 104  Bit Score: 121.27  E-value: 1.62e-33
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 159 NQLLVGIIQAAELPALDMGGTSDPYVKVFLLpDKKKKYETKVHRKTLNPVFNEQFTFKVPYSElgGKTLVMAVYDFDRFS 238
Cdd:pfam00168   1 GRLTVTVIEAKNLPPKDGNGTSDPYVKVYLL-DGKQKKKTKVVKNTLNPVWNETFTFSVPDPE--NAVLEIEVYDYDRFG 77
                          90       100
                  ....*....|....*....|....*..
gi 2125461122 239 KHDIIGEYKVAMNTVDFGHVTEEWRDL 265
Cdd:pfam00168  78 RDDFIGEVRIPLSELDSGEGLDGWYPL 104
Syt1_N cd21963
N-terminal domain of synaptotagmin-1 (Syt1) and similar proteins; Syt1, also called ...
6-115 1.17e-29

N-terminal domain of synaptotagmin-1 (Syt1) and similar proteins; Syt1, also called synaptotagmin I (SytI), or p65, is a calcium sensor that participates in triggering neurotransmitter release at the synapse. It may have a regulatory role in the membrane interactions during trafficking of synaptic vesicles at the active zone of the synapse. Syt1 binds acidic phospholipids with a specificity that requires the presence of both an acidic head group and a diacyl backbone. A Ca(2+)-dependent interaction between synaptotagmin and putative receptors for activated protein kinase C has also been reported. It can bind to at least three additional proteins in a Ca(2+)-independent manner; these are neurexins, syntaxin and AP2. Syt1 also plays a role in dendrite formation by melanocytes. The model corresponds to N-terminal domain of Syt1, which is a recognition domain responsible for the binding of botulinum neurotoxin B (BoNT B).


Pssm-ID: 409248  Cd Length: 108  Bit Score: 111.13  E-value: 1.17e-29
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122   6 HHEALAAPPATTVAAALPSNVTEPAAPGGGggKEDAFSNLKKKFMNELNKIPLPPWALIAIAIVAVLLILTCCFCLCKKC 85
Cdd:cd21963     1 HHEALAAPPVTTVAAVLPGNATEAAGPGGG--KEDAFSKLKDKFMNELHKIPLPPWALIAIAIVAVLLILTCCFCICKKC 78
                          90       100       110
                  ....*....|....*....|....*....|
gi 2125461122  86 LFKKKNKKKGKEKGGKNAINMKDVKDLGKT 115
Cdd:cd21963    79 LFKKKNKKKGKEKGGKNAINMKDVKDLGKT 108
C2 smart00239
Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, ...
160-262 7.30e-28

Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, protein kinases C, and synaptotagmins (among others). Some do not appear to contain Ca2+-binding sites. Particular C2s appear to bind phospholipids, inositol polyphosphates, and intracellular proteins. Unusual occurrence in perforin. Synaptotagmin and PLC C2s are permuted in sequence with respect to N- and C-terminal beta strands. SMART detects C2 domains using one or both of two profiles.


Pssm-ID: 214577 [Multi-domain]  Cd Length: 101  Bit Score: 106.03  E-value: 7.30e-28
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  160 QLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELggKTLVMAVYDFDRFSK 239
Cdd:smart00239   1 TLTVKIISARNLPPKDKGGKSDPYVKVSLDGDPKEKKKTKVVKNTLNPVWNETFEFEVPPPEL--AELEIEVYDKDRFGR 78
                           90       100
                   ....*....|....*....|...
gi 2125461122  240 HDIIGEYKVAMNTVDFGHVTEEW 262
Cdd:smart00239  79 DDFIGQVTIPLSDLLLGGRHEKL 101
C2 pfam00168
C2 domain;
290-396 6.59e-21

C2 domain;


Pssm-ID: 425499 [Multi-domain]  Cd Length: 104  Bit Score: 86.99  E-value: 6.59e-21
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 290 GKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGkrlKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKvqIVVTVLDYDK 369
Cdd:pfam00168   1 GRLTVTVIEAKNLPPKDGNGTSDPYVKVYLLDGK---QKKKTKVVKNTLNPVWNETFTFSVPDPENAV--LEIEVYDYDR 75
                          90       100
                  ....*....|....*....|....*....
gi 2125461122 370 IGKNDAIGKVFVGYNST--GAELRHWSDM 396
Cdd:pfam00168  76 FGRDDFIGEVRIPLSELdsGEGLDGWYPL 104
C2 smart00239
Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, ...
291-393 1.63e-17

Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, protein kinases C, and synaptotagmins (among others). Some do not appear to contain Ca2+-binding sites. Particular C2s appear to bind phospholipids, inositol polyphosphates, and intracellular proteins. Unusual occurrence in perforin. Synaptotagmin and PLC C2s are permuted in sequence with respect to N- and C-terminal beta strands. SMART detects C2 domains using one or both of two profiles.


Pssm-ID: 214577 [Multi-domain]  Cd Length: 101  Bit Score: 77.53  E-value: 1.63e-17
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  291 KLTVVILEAKNLKKMDVGGLSDPYVKIHLmqNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKvqIVVTVLDYDKI 370
Cdd:smart00239   1 TLTVKIISARNLPPKDKGGKSDPYVKVSL--DGDPKEKKKTKVVKNTLNPVWNETFEFEVPPPELAE--LEIEVYDKDRF 76
                           90       100
                   ....*....|....*....|...
gi 2125461122  371 GKNDAIGKVFVGYNSTGAELRHW 393
Cdd:smart00239  77 GRDDFIGQVTIPLSDLLLGGRHE 99
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
161-261 2.38e-11

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 65.94  E-value: 2.38e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  161 LLVGIIQAAELPALDMGGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELggKTLVMAVYDFDRFSKH 240
Cdd:COG5038   1042 LTIMLRSGENLPSSDENGYSDPFVKLFL--NEKSVYKTKVVKKTLNPVWNEEFTIEVLNRVK--DVLTINVNDWDSGEKN 1117
                           90       100
                   ....*....|....*....|.
gi 2125461122  241 DIIGEYKVAMNTVDFGHVTEE 261
Cdd:COG5038   1118 DLLGTAEIDLSKLEPGGTTNS 1138
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
289-378 1.42e-06

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 50.91  E-value: 1.42e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  289 AGKLTVVILEAKNLKKMDVGGLSDPYVKIHLmqNGkrLKKKKTTIKKNTLNPYYNESFSFEVPFEqiQKVQIVVTVLDYD 368
Cdd:COG5038   1039 SGYLTIMLRSGENLPSSDENGYSDPFVKLFL--NE--KSVYKTKVVKKTLNPVWNEEFTIEVLNR--VKDVLTINVNDWD 1112
                           90
                   ....*....|
gi 2125461122  369 KIGKNDAIGK 378
Cdd:COG5038   1113 SGEKNDLLGT 1122
 
Name Accession Description Interval E-value
C2B_Synaptotagmin-1 cd08402
C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking ...
276-411 2.85e-90

C2 domain second repeat present in Synaptotagmin 1; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of the class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis. It, like synaptotagmin-2, has an N-glycosylated N-terminus. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176047 [Multi-domain]  Cd Length: 136  Bit Score: 269.27  E-value: 2.85e-90
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd08402     1 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKRTLNPYYNESFSFEVPFEQI 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTLQ 411
Cdd:cd08402    81 QKVHLIVTVLDYDRIGKNDPIGKVVLGCNATGAELRHWSDMLASPRRPIAQWHTLQ 136
C2A_Synaptotagmin-1-5-6-9-10 cd08385
C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a ...
145-267 3.85e-87

C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis as do synaptotagmins 5, 6, and 10. It is distinguished from the other synaptotagmins by having an N-glycosylated N-terminus. Synaptotagmins 5, 6, and 10, members of class 3 synaptotagmins, are located primarily in the brain and localized to the active zone and plasma membrane. They is distinguished from the other synaptotagmins by having disulfide bonds at its N-terminus. Synaptotagmin 6 also regulates the acrosome reaction, a unique Ca2+-regulated exocytosis, in sperm. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176031 [Multi-domain]  Cd Length: 124  Bit Score: 260.66  E-value: 3.85e-87
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELGG 224
Cdd:cd08385     2 LGKLQFSLDYDFQSNQLTVGIIQAADLPAMDMGGTSDPYVKVYLLPDKKKKFETKVHRKTLNPVFNETFTFKVPYSELGN 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 2125461122 225 KTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQS 267
Cdd:cd08385    82 KTLVFSVYDFDRFSKHDLIGEVRVPLLTVDLGHVTEEWRDLES 124
C2B_Synaptotagmin cd00276
C2 domain second repeat present in Synaptotagmin; Synaptotagmin is a membrane-trafficking ...
277-410 2.02e-58

C2 domain second repeat present in Synaptotagmin; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. There are several classes of Synaptotagmins. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175975 [Multi-domain]  Cd Length: 134  Bit Score: 187.41  E-value: 2.02e-58
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQ 356
Cdd:cd00276     1 GELLLSLSYLPTAERLTVVVLKARNLPPSDGKGLSDPYVKVSLLQGGKKLKKKKTSVKKGTLNPVFNEAFSFDVPAEQLE 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....
gi 2125461122 357 KVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTL 410
Cdd:cd00276    81 EVSLVITVVDKDSVGRNEVIGQVVLGPDSGGEELEHWNEMLASPRKPIARWHKL 134
C2B_Synaptotagmin-7 cd08405
C2 domain second repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking ...
276-411 3.08e-56

C2 domain second repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176050 [Multi-domain]  Cd Length: 136  Bit Score: 181.85  E-value: 3.08e-56
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd08405     1 RGELLLSLCYNPTANRITVNIIKARNLKAMDINGTSDPYVKVWLMYKDKRVEKKKTVIKKRTLNPVFNESFIFNIPLERL 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTLQ 411
Cdd:cd08405    81 RETTLIITVMDKDRLSRNDLIGKIYLGWKSGGLELKHWKDMLSKPRQPVAQWHRLK 136
C2A_Synaptotagmin-7 cd08386
C2A domain first repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking ...
145-266 4.79e-50

C2A domain first repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176032 [Multi-domain]  Cd Length: 125  Bit Score: 165.58  E-value: 4.79e-50
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFK-VPYSELG 223
Cdd:cd08386     2 LGRIQFSVSYDFQESTLTLKILKAVELPAKDFSGTSDPFVKIYLLPDKKHKLETKVKRKNLNPHWNETFLFEgFPYEKLQ 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 2125461122 224 GKTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQ 266
Cdd:cd08386    82 QRVLYLQVLDYDRFSRNDPIGEVSLPLNKVDLTEEQTFWKDLK 124
C2B_Synaptotagmin-3-5-6-9-10 cd08403
C2 domain second repeat present in Synaptotagmins 3, 5, 6, 9, and 10; Synaptotagmin is a ...
277-410 2.13e-44

C2 domain second repeat present in Synaptotagmins 3, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 3, a member of class 3 synaptotagmins, is located in the brain and localized to the active zone and plasma membrane. It functions as a Ca2+ sensor for fast exocytosis. It, along with synaptotagmins 5,6, and 10, has disulfide bonds at its N-terminus. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176048 [Multi-domain]  Cd Length: 134  Bit Score: 151.12  E-value: 2.13e-44
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQ 356
Cdd:cd08403     1 GELMFSLCYLPTAGRLTLTIIKARNLKAMDITGFSDPYVKVSLMCEGRRLKKKKTSVKKNTLNPTYNEALVFDVPPENVD 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....
gi 2125461122 357 KVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTL 410
Cdd:cd08403    81 NVSLIIAVVDYDRVGHNELIGVCRVGPNADGQGREHWNEMLANPRKPIAQWHQL 134
C2B_Synaptotagmin-4 cd08404
C2 domain second repeat present in Synaptotagmin 4; Synaptotagmin is a membrane-trafficking ...
277-410 8.12e-39

C2 domain second repeat present in Synaptotagmin 4; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176049 [Multi-domain]  Cd Length: 136  Bit Score: 136.40  E-value: 8.12e-39
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQ 356
Cdd:cd08404     2 GELLLSLCYQPTTNRLTVVVLKARHLPKMDVSGLADPYVKVNLYYGKKRISKKKTHVKKCTLNPVFNESFVFDIPSEELE 81
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....
gi 2125461122 357 KVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTL 410
Cdd:cd08404    82 DISVEFLVLDSDRVTKNEVIGRLVLGPKASGSGGHHWKEVCNPPRRQIAEWHML 135
C2A_Synaptotagmin-15-17 cd08390
C2A domain first repeat present in Synaptotagmins 15 and 17; Synaptotagmin is a ...
146-266 2.94e-38

C2A domain first repeat present in Synaptotagmins 15 and 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176036 [Multi-domain]  Cd Length: 123  Bit Score: 134.31  E-value: 2.94e-38
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMG-GTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELGG 224
Cdd:cd08390     1 GRLWFSVQYDLEEEQLTVSLIKARNLPPRTKDvAHCDPFVKVCLLPDERRSLQSKVKRKTQNPNFDETFVFQVSFKELQR 80
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|..
gi 2125461122 225 KTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQ 266
Cdd:cd08390    81 RTLRLSVYDVDRFSRHCIIGHVLFPLKDLDLVKGGVVWRDLE 122
C2A_Synaptotagmin-8 cd08387
C2A domain first repeat present in Synaptotagmin 8; Synaptotagmin is a membrane-trafficking ...
145-267 1.36e-35

C2A domain first repeat present in Synaptotagmin 8; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176033 [Multi-domain]  Cd Length: 124  Bit Score: 127.52  E-value: 1.36e-35
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELGG 224
Cdd:cd08387     2 RGELHFSLEYDKDMGILNVKLIQARNLQPRDFSGTADPYCKVRLLPDRSNTKQSKIHKKTLNPEFDESFVFEVPPQELPK 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 2125461122 225 KTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQS 267
Cdd:cd08387    82 RTLEVLLYDFDQFSRDECIGVVELPLAEVDLSEKLDLWRKIQS 124
C2B_Synaptotagmin-12 cd08406
C2 domain second repeat present in Synaptotagmin 12; Synaptotagmin is a membrane-trafficking ...
277-411 6.20e-35

C2 domain second repeat present in Synaptotagmin 12; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 12, a member of class 6 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmins 8 and 13, do not have any consensus Ca2+ binding sites. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176051 [Multi-domain]  Cd Length: 136  Bit Score: 126.06  E-value: 6.20e-35
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQ 356
Cdd:cd08406     2 GEILLSLSYLPTAERLTVVVVKARNLVWDNGKTTADPFVKVYLLQDGRKISKKKTSVKRDDTNPIFNEAMIFSVPAIVLQ 81
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 2125461122 357 KVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTLQ 411
Cdd:cd08406    82 DLSLRVTVAESTEDGKTPNVGHVIIGPAASGMGLSHWNQMLASLRKPVAMWHPLR 136
C2A_Synaptotagmin-4-11 cd08388
C2A domain first repeat present in Synaptotagmins 4 and 11; Synaptotagmin is a ...
145-267 4.53e-34

C2A domain first repeat present in Synaptotagmins 4 and 11; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmins 4 and 11, class 4 synaptotagmins, are located in the brain. Their functions are unknown. They are distinguished from the other synaptotagmins by having and Asp to Ser substitution in their C2A domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176034 [Multi-domain]  Cd Length: 128  Bit Score: 123.61  E-value: 4.53e-34
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALD-MGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTF-KVPYSEL 222
Cdd:cd08388     2 LGTLFFSLRYNSEKKALLVNIIECRDLPAMDeQSGTSDPYVKLQLLPEKEHKVKTRVLRKTRNPVYDETFTFyGIPYNQL 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*..
gi 2125461122 223 GGKTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTE--EWRDLQS 267
Cdd:cd08388    82 QDLSLHFAVLSFDRYSRDDVIGEVVCPLAGADLLNEGEllVSREIQP 128
C2 pfam00168
C2 domain;
159-265 1.62e-33

C2 domain;


Pssm-ID: 425499 [Multi-domain]  Cd Length: 104  Bit Score: 121.27  E-value: 1.62e-33
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 159 NQLLVGIIQAAELPALDMGGTSDPYVKVFLLpDKKKKYETKVHRKTLNPVFNEQFTFKVPYSElgGKTLVMAVYDFDRFS 238
Cdd:pfam00168   1 GRLTVTVIEAKNLPPKDGNGTSDPYVKVYLL-DGKQKKKTKVVKNTLNPVWNETFTFSVPDPE--NAVLEIEVYDYDRFG 77
                          90       100
                  ....*....|....*....|....*..
gi 2125461122 239 KHDIIGEYKVAMNTVDFGHVTEEWRDL 265
Cdd:pfam00168  78 RDDFIGEVRIPLSELDSGEGLDGWYPL 104
C2B_Synaptotagmin-17 cd08410
C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking ...
277-410 6.79e-33

C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176055 [Multi-domain]  Cd Length: 135  Bit Score: 120.77  E-value: 6.79e-33
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQ 356
Cdd:cd08410     1 GELLLSLNYLPSAGRLNVDIIRAKQLLQTDMSQGSDPFVKIQLVHGLKLIKTKKTSCMRGTIDPFYNESFSFKVPQEELE 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 2125461122 357 KVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGA-ELRHWSDMLANPRRPIAQWHTL 410
Cdd:cd08410    81 NVSLVFTVYGHNVKSSNDFIGRIVIGQYSSGPsETNHWRRMLNSQRTAVEQWHSL 135
C2B_Synaptotagmin-15 cd08409
C2 domain second repeat present in Synaptotagmin 15; Synaptotagmin is a membrane-trafficking ...
276-410 1.54e-32

C2 domain second repeat present in Synaptotagmin 15; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176054 [Multi-domain]  Cd Length: 137  Bit Score: 119.75  E-value: 1.54e-32
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGlSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd08409     1 LGDIQISLTYNPTLNRLTVVVLRARGLRQLDHAH-TSVYVKVSLMIHNKVVKTKKTEVVDGAASPSFNESFSFKVTSRQL 79
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFVG---YnSTGAELRHWSDMLANPRRPIAQWHTL 410
Cdd:cd08409    80 DTASLSLSVMQSGGVRKSKLLGRVVLGpfmY-ARGKELEHWNDMLSKPKELIKRWHAL 136
C2B_Rabphilin_Doc2 cd08384
C2 domain second repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons ...
147-244 2.02e-32

C2 domain second repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176030 [Multi-domain]  Cd Length: 133  Bit Score: 119.37  E-value: 2.02e-32
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 147 KIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPD--KKKKYETKVHRKTLNPVFNEQFTFKVPYSELGG 224
Cdd:cd08384     1 KILVSLMYNTQRRGLIVGIIRCVNLAAMDANGYSDPFVKLYLKPDagKKSKHKTQVKKKTLNPEFNEEFFYDIKHSDLAK 80
                          90       100
                  ....*....|....*....|
gi 2125461122 225 KTLVMAVYDFDRFSKHDIIG 244
Cdd:cd08384    81 KTLEITVWDKDIGKSNDYIG 100
C2A_SLP-1_2 cd08393
C2 domain first repeat present in Synaptotagmin-like proteins 1 and 2; All Slp members ...
146-266 5.75e-31

C2 domain first repeat present in Synaptotagmin-like proteins 1 and 2; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike Slp3 and Slp4/granuphilin which are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176039 [Multi-domain]  Cd Length: 125  Bit Score: 115.22  E-value: 5.75e-31
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDM-GGTSDPYVKVFLLPDKKK--KYETKVHRKTLNPVFNEQFTFKVPYSEL 222
Cdd:cd08393     2 GSVQFALDYDPKLRELHVHVIQCQDLAAADPkKQRSDPYVKTYLLPDKSNrgKRKTSVKKKTLNPVFNETLRYKVEREEL 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....
gi 2125461122 223 GGKTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQ 266
Cdd:cd08393    82 PTRVLNLSVWHRDSLGRNSFLGEVEVDLGSWDWSNTQPTWYPLQ 125
Syt1_N cd21963
N-terminal domain of synaptotagmin-1 (Syt1) and similar proteins; Syt1, also called ...
6-115 1.17e-29

N-terminal domain of synaptotagmin-1 (Syt1) and similar proteins; Syt1, also called synaptotagmin I (SytI), or p65, is a calcium sensor that participates in triggering neurotransmitter release at the synapse. It may have a regulatory role in the membrane interactions during trafficking of synaptic vesicles at the active zone of the synapse. Syt1 binds acidic phospholipids with a specificity that requires the presence of both an acidic head group and a diacyl backbone. A Ca(2+)-dependent interaction between synaptotagmin and putative receptors for activated protein kinase C has also been reported. It can bind to at least three additional proteins in a Ca(2+)-independent manner; these are neurexins, syntaxin and AP2. Syt1 also plays a role in dendrite formation by melanocytes. The model corresponds to N-terminal domain of Syt1, which is a recognition domain responsible for the binding of botulinum neurotoxin B (BoNT B).


Pssm-ID: 409248  Cd Length: 108  Bit Score: 111.13  E-value: 1.17e-29
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122   6 HHEALAAPPATTVAAALPSNVTEPAAPGGGggKEDAFSNLKKKFMNELNKIPLPPWALIAIAIVAVLLILTCCFCLCKKC 85
Cdd:cd21963     1 HHEALAAPPVTTVAAVLPGNATEAAGPGGG--KEDAFSKLKDKFMNELHKIPLPPWALIAIAIVAVLLILTCCFCICKKC 78
                          90       100       110
                  ....*....|....*....|....*....|
gi 2125461122  86 LFKKKNKKKGKEKGGKNAINMKDVKDLGKT 115
Cdd:cd21963    79 LFKKKNKKKGKEKGGKNAINMKDVKDLGKT 108
C2B_Rabphilin_Doc2 cd08384
C2 domain second repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons ...
279-410 3.56e-29

C2 domain second repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176030 [Multi-domain]  Cd Length: 133  Bit Score: 110.52  E-value: 3.56e-29
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 279 ICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKV 358
Cdd:cd08384     2 ILVSLMYNTQRRGLIVGIIRCVNLAAMDANGYSDPFVKLYLKPDAGKKSKHKTQVKKKTLNPEFNEEFFYDIKHSDLAKK 81
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|...
gi 2125461122 359 QIVVTVLDYDkIGK-NDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTL 410
Cdd:cd08384    82 TLEITVWDKD-IGKsNDYIGGLQLGINAKGERLRHWLDCLKNPDKKIEAWHTL 133
C2C_KIAA1228 cd04030
C2 domain third repeat present in uncharacterized human KIAA1228-like proteins; KIAA proteins ...
145-266 7.95e-29

C2 domain third repeat present in uncharacterized human KIAA1228-like proteins; KIAA proteins are uncharacterized human proteins. They were compiled by the Kazusa mammalian cDNA project which identified more than 2000 human genes. They are identified by 4 digit codes that precede the KIAA designation. Many KIAA genes are still functionally uncharacterized including KIAA1228. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175996 [Multi-domain]  Cd Length: 127  Bit Score: 109.28  E-value: 7.95e-29
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKK--KYETKVHRKTLNPVFNEQFTFKVPYSEL 222
Cdd:cd04030     2 LGRIQLTIRYSSQRQKLIVTVHKCRNLPPCDSSDIPDPYVRLYLLPDKSKstRRKTSVKKDNLNPVFDETFEFPVSLEEL 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 2125461122 223 GGKTLVMAV-YDFDRFSKH-DIIGEYKVAMNTVDFGHVTEEWRDLQ 266
Cdd:cd04030    82 KRRTLDVAVkNSKSFLSREkKLLGQVLIDLSDLDLSKGFTQWYDLT 127
C2 smart00239
Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, ...
160-262 7.30e-28

Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, protein kinases C, and synaptotagmins (among others). Some do not appear to contain Ca2+-binding sites. Particular C2s appear to bind phospholipids, inositol polyphosphates, and intracellular proteins. Unusual occurrence in perforin. Synaptotagmin and PLC C2s are permuted in sequence with respect to N- and C-terminal beta strands. SMART detects C2 domains using one or both of two profiles.


Pssm-ID: 214577 [Multi-domain]  Cd Length: 101  Bit Score: 106.03  E-value: 7.30e-28
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  160 QLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELggKTLVMAVYDFDRFSK 239
Cdd:smart00239   1 TLTVKIISARNLPPKDKGGKSDPYVKVSLDGDPKEKKKTKVVKNTLNPVWNETFEFEVPPPEL--AELEIEVYDKDRFGR 78
                           90       100
                   ....*....|....*....|...
gi 2125461122  240 HDIIGEYKVAMNTVDFGHVTEEW 262
Cdd:smart00239  79 DDFIGQVTIPLSDLLLGGRHEKL 101
C2A_SLP cd08521
C2 domain first repeat present in Synaptotagmin-like proteins; All Slp members basically share ...
146-262 9.30e-27

C2 domain first repeat present in Synaptotagmin-like proteins; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. Slp5 mRNA has been shown to be restricted to human placenta and liver suggesting a role in Rab27A-dependent membrane trafficking in specific tissues. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176056 [Multi-domain]  Cd Length: 123  Bit Score: 103.87  E-value: 9.30e-27
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMG-GTSDPYVKVFLLPDKKK--KYETKVHRKTLNPVFNEQFTFKVPYSEL 222
Cdd:cd08521     1 GEIEFSLSYNYKTGSLEVHIKECRNLAYADEKkKRSNPYVKVYLLPDKSKqsKRKTSVKKNTTNPVFNETLKYHISKSQL 80
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|
gi 2125461122 223 GGKTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEW 262
Cdd:cd08521    81 ETRTLQLSVWHHDRFGRNTFLGEVEIPLDSWDLDSQQSEW 120
C2 cd00030
C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed ...
161-265 1.76e-26

C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175973 [Multi-domain]  Cd Length: 102  Bit Score: 102.15  E-value: 1.76e-26
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEQFTFKVPysELGGKTLVMAVYDFDRFSKH 240
Cdd:cd00030     1 LRVTVIEARNLPAKDLNGKSDPYVKVSL--GGKQKFKTKVVKNTLNPVWNETFEFPVL--DPESDTLTVEVWDKDRFSKD 76
                          90       100
                  ....*....|....*....|....*.
gi 2125461122 241 DIIGEYKVAMNTV-DFGHVTEEWRDL 265
Cdd:cd00030    77 DFLGEVEIPLSELlDSGKEGELWLPL 102
C2A_Rabphilin_Doc2 cd04035
C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons ...
145-250 3.04e-26

C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176000 [Multi-domain]  Cd Length: 123  Bit Score: 102.36  E-value: 3.04e-26
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLP--DKKKKYETKVHRKTLNPVFNEQFTFK-VPYSE 221
Cdd:cd04035     1 LGTLEFTLLYDPANSALHCTIIRAKGLKAMDANGLSDPYVKLNLLPgaSKATKLRTKTVHKTRNPEFNETLTYYgITEED 80
                          90       100
                  ....*....|....*....|....*....
gi 2125461122 222 LGGKTLVMAVYDFDRFSkHDIIGEYKVAM 250
Cdd:cd04035    81 IQRKTLRLLVLDEDRFG-NDFLGETRIPL 108
C2A_RIM1alpha cd04031
C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are ...
146-245 1.50e-24

C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.


Pssm-ID: 175997 [Multi-domain]  Cd Length: 125  Bit Score: 97.70  E-value: 1.50e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKY--ETKVHRKTLNPVFNEQFTFK-VPYSEL 222
Cdd:cd04031     3 GRIQIQLWYDKVTSQLIVTVLQARDLPPRDDGSLRNPYVKVYLLPDRSEKSkrRTKTVKKTLNPEWNQTFEYSnVRRETL 82
                          90       100
                  ....*....|....*....|...
gi 2125461122 223 GGKTLVMAVYDFDRFSKHDIIGE 245
Cdd:cd04031    83 KERTLEVTVWDYDRDGENDFLGE 105
C2B_Synaptotagmin-13 cd08407
C2 domain second repeat present in Synaptotagmin 13; Synaptotagmin is a membrane-trafficking ...
277-410 2.80e-24

C2 domain second repeat present in Synaptotagmin 13; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 13, a member of class 6 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmins 8 and 12, does not have any consensus Ca2+ binding sites. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176052 [Multi-domain]  Cd Length: 138  Bit Score: 97.36  E-value: 2.80e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGL--SDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQ 354
Cdd:cd08407     2 GEVLLSISYLPAANRLLVVVIKAKNLHSDQLKLLlgIDVSVKVTLKHQNAKLKKKQTKRAKHKINPVWNEMIMFELPSEL 81
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*.
gi 2125461122 355 IQKVQIVVTVLDYDKIGKNDAIGKVFVGYNSTGAELRHWSDMLANPRRPIAQWHTL 410
Cdd:cd08407    82 LAASSVELEVLNQDSPGQSLPLGRCSLGLHTSGTERQHWEEMLDNPRRQIAMWHQL 137
C2A_Synaptotagmin-1-5-6-9-10 cd08385
C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a ...
275-398 2.93e-24

C2A domain first repeat present in Synaptotagmins 1, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 1, a member of class 1 synaptotagmins, is located in the brain and endocranium and localized to the synaptic vesicles and secretory granules. It functions as a Ca2+ sensor for fast exocytosis as do synaptotagmins 5, 6, and 10. It is distinguished from the other synaptotagmins by having an N-glycosylated N-terminus. Synaptotagmins 5, 6, and 10, members of class 3 synaptotagmins, are located primarily in the brain and localized to the active zone and plasma membrane. They is distinguished from the other synaptotagmins by having disulfide bonds at its N-terminus. Synaptotagmin 6 also regulates the acrosome reaction, a unique Ca2+-regulated exocytosis, in sperm. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176031 [Multi-domain]  Cd Length: 124  Bit Score: 96.95  E-value: 2.93e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 275 KLGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNgkRLKKKKTTIKKNTLNPYYNESFSFEVPFEQ 354
Cdd:cd08385     1 KLGKLQFSLDYDFQSNQLTVGIIQAADLPAMDMGGTSDPYVKVYLLPD--KKKKFETKVHRKTLNPVFNETFTFKVPYSE 78
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 2125461122 355 IQKVQIVVTVLDYDKIGKNDAIGKVFVGYNST--GAELRHWSDMLA 398
Cdd:cd08385    79 LGNKTLVFSVYDFDRFSKHDLIGEVRVPLLTVdlGHVTEEWRDLES 124
C2B_Synaptotagmin-4 cd08404
C2 domain second repeat present in Synaptotagmin 4; Synaptotagmin is a membrane-trafficking ...
146-265 6.31e-24

C2 domain second repeat present in Synaptotagmin 4; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 4, a member of class 4 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmin-11, has an Asp to Ser substitution in its C2A domain. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176049 [Multi-domain]  Cd Length: 136  Bit Score: 96.34  E-value: 6.31e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKK--KYETKVHRKTLNPVFNEQFTFKVPYSELG 223
Cdd:cd08404     2 GELLLSLCYQPTTNRLTVVVLKARHLPKMDVSGLADPYVKVNLYYGKKRisKKKTHVKKCTLNPVFNESFVFDIPSEELE 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|..
gi 2125461122 224 GKTLVMAVYDFDRFSKHDIIGeyKVAMNTVDFGHVTEEWRDL 265
Cdd:cd08404    82 DISVEFLVLDSDRVTKNEVIG--RLVLGPKASGSGGHHWKEV 121
C2A_SLP-4_5 cd04029
C2 domain first repeat present in Synaptotagmin-like proteins 4 and 5; All Slp members ...
146-266 8.73e-24

C2 domain first repeat present in Synaptotagmin-like proteins 4 and 5; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. SHD of Slp (except for the Slp4-SHD) function as a specific Rab27A/B-binding domain. In addition to Slp, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp4/granuphilin promotes dense-core vesicle exocytosis. The C2A domain of Slp4 is Ca2+ dependent. Slp5 mRNA has been shown to be restricted to human placenta and liver suggesting a role in Rab27A-dependent membrane trafficking in specific tissues. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 175995 [Multi-domain]  Cd Length: 125  Bit Score: 95.58  E-value: 8.73e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGT-SDPYVKVFLLPDK--KKKYETKVHRKTLNPVFNEQFTFKVPYSEL 222
Cdd:cd04029     2 GEILFSLSYDYKTQSLNVHVKECRNLAYGDEAKKrSNPYVKTYLLPDKsrQSKRKTSIKRNTTNPVYNETLKYSISHSQL 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....
gi 2125461122 223 GGKTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQ 266
Cdd:cd04029    82 ETRTLQLSVWHYDRFGRNTFLGEVEIPLDSWNFDSQHEECLPLH 125
C2_PKC_alpha_gamma cd04026
C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha ...
146-244 2.25e-23

C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha and gamma. The PKC family of serine/threonine kinases regulates apoptosis, proliferation, migration, motility, chemo-resistance, and differentiation. There are 3 groups: group 1(alpha, betaI, beta II, gamma) which require phospholipids and calcium, group 2 (delta, epsilon, theta, eta) which do not require calcium for activation, and group 3 (xi, iota/lambda) which are atypical and can be activated in the absence of diacylglycerol and calcium. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 175992 [Multi-domain]  Cd Length: 131  Bit Score: 94.64  E-value: 2.25e-23
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYdfQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPD--KKKKYETKVHRKTLNPVFNEQFTFKVPYSELg 223
Cdd:cd04026     2 GRIYLKISV--KDNKLTVEVREAKNLIPMDPNGLSDPYVKLKLIPDpkNETKQKTKTIKKTLNPVWNETFTFDLKPADK- 78
                          90       100
                  ....*....|....*....|.
gi 2125461122 224 GKTLVMAVYDFDRFSKHDIIG 244
Cdd:cd04026    79 DRRLSIEVWDWDRTTRNDFMG 99
C2B_Munc13-like cd04009
C2 domain second repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are ...
154-260 4.24e-22

C2 domain second repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175976 [Multi-domain]  Cd Length: 133  Bit Score: 91.15  E-value: 4.24e-22
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 154 YDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKK----KKYETKVHRKTLNPVFNEQFTFKVP--YSELGGKTL 227
Cdd:cd04009    11 YRASEQSLRVEILNARNLLPLDSNGSSDPFVKVELLPRHLfpdvPTPKTQVKKKTLFPLFDESFEFNVPpeQCSVEGALL 90
                          90       100       110
                  ....*....|....*....|....*....|...
gi 2125461122 228 VMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTE 260
Cdd:cd04009    91 LFTVKDYDLLGSNDFEGEAFLPLNDIPGVEDTS 123
C2 pfam00168
C2 domain;
290-396 6.59e-21

C2 domain;


Pssm-ID: 425499 [Multi-domain]  Cd Length: 104  Bit Score: 86.99  E-value: 6.59e-21
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 290 GKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGkrlKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKvqIVVTVLDYDK 369
Cdd:pfam00168   1 GRLTVTVIEAKNLPPKDGNGTSDPYVKVYLLDGK---QKKKTKVVKNTLNPVWNETFTFSVPDPENAV--LEIEVYDYDR 75
                          90       100
                  ....*....|....*....|....*....
gi 2125461122 370 IGKNDAIGKVFVGYNST--GAELRHWSDM 396
Cdd:pfam00168  76 FGRDDFIGEVRIPLSELdsGEGLDGWYPL 104
C2B_SLP_1-2-3-4 cd04020
C2 domain second repeat present in Synaptotagmin-like proteins 1-4; All Slp members basically ...
158-270 9.20e-21

C2 domain second repeat present in Synaptotagmin-like proteins 1-4; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175987 [Multi-domain]  Cd Length: 162  Bit Score: 88.53  E-value: 9.20e-21
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 158 NNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKK--KYETKVHRKTLNPVFNEQFTFK-VPYSELGGKTLVMAVYDF 234
Cdd:cd04020    26 TGELHVWVKEAKNLPALKSGGTSDSFVKCYLLPDKSKksKQKTPVVKKSVNPVWNHTFVYDgVSPEDLSQACLELTVWDH 105
                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 2125461122 235 DRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQSAEK 270
Cdd:cd04020   106 DKLSSNDFLGGVRLGLGTGKSYGQAVDWMDSTGEEI 141
C2B_Synaptotagmin-14_16 cd08408
C2 domain second repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are ...
278-410 1.52e-20

C2 domain second repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are membrane-trafficking proteins in specific tissues outside the brain. Both of these contain C-terminal tandem C2 repeats, but only Synaptotagmin 14 has an N-terminal transmembrane domain and a putative fatty-acylation site. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium and this is indeed the case here. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176053 [Multi-domain]  Cd Length: 138  Bit Score: 87.04  E-value: 1.52e-20
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 278 DICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLM-QNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQ 356
Cdd:cd08408     3 ELLLGLEYNALTGRLSVEVIKGSNFKNLAMNKAPDTYVKLTLLnSDGQEISKSKTSIRRGQPDPEFKETFVFQVALFQLS 82
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 2125461122 357 KVQIVVTVLDYDKIGKNDAIGKVFVGYNSTG-AELRHWSDMLANPRRPIAQWHTL 410
Cdd:cd08408    83 EVTLMFSVYNKRKMKRKEMIGWFSLGLNSSGeEEEEHWNEMKESKGQQVCRWHTL 137
C2D_Tricalbin-like cd04040
C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
161-260 4.70e-20

C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.


Pssm-ID: 176005 [Multi-domain]  Cd Length: 115  Bit Score: 84.93  E-value: 4.70e-20
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEQFTFKVPySELGGKtLVMAVYDFDRFSKH 240
Cdd:cd04040     1 LTVDVISAENLPSADRNGKSDPFVKFYL--NGEKVFKTKTIKKTLNPVWNESFEVPVP-SRVRAV-LKVEVYDWDRGGKD 76
                          90       100
                  ....*....|....*....|
gi 2125461122 241 DIIGEYKVAMNTVDFGHVTE 260
Cdd:cd04040    77 DLLGSAYIDLSDLEPEETTE 96
C2B_Synaptotagmin-3-5-6-9-10 cd08403
C2 domain second repeat present in Synaptotagmins 3, 5, 6, 9, and 10; Synaptotagmin is a ...
146-265 1.12e-19

C2 domain second repeat present in Synaptotagmins 3, 5, 6, 9, and 10; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 3, a member of class 3 synaptotagmins, is located in the brain and localized to the active zone and plasma membrane. It functions as a Ca2+ sensor for fast exocytosis. It, along with synaptotagmins 5,6, and 10, has disulfide bonds at its N-terminus. Synaptotagmin 9, a class 5 synaptotagmins, is located in the brain and localized to the synaptic vesicles. It is thought to be a Ca2+-sensor for dense-core vesicle exocytosis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176048 [Multi-domain]  Cd Length: 134  Bit Score: 84.48  E-value: 1.12e-19
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKK--KKYETKVHRKTLNPVFNEQFTFKVPYSELG 223
Cdd:cd08403     1 GELMFSLCYLPTAGRLTLTIIKARNLKAMDITGFSDPYVKVSLMCEGRrlKKKKTSVKKNTLNPTYNEALVFDVPPENVD 80
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|..
gi 2125461122 224 GKTLVMAVYDFDRFSKHDIIGEYKVAMNTVdfGHVTEEWRDL 265
Cdd:cd08403    81 NVSLIIAVVDYDRVGHNELIGVCRVGPNAD--GQGREHWNEM 120
C2A_Synaptotagmin-14_16 cd08389
C2A domain first repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are ...
146-266 2.32e-19

C2A domain first repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are membrane-trafficking proteins in specific tissues outside the brain. Both of these contain C-terminal tandem C2 repeats, but only Synaptotagmin 14 has an N-terminal transmembrane domain and a putative fatty-acylation site. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium and this is indeed the case here. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176035 [Multi-domain]  Cd Length: 124  Bit Score: 83.44  E-value: 2.32e-19
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTlNPVFNEQFTF-KVPYSELGG 224
Cdd:cd08389     3 GDLDVAFEYDPSARKLTVTVIRAQDIPTKDRGGASSWQVHLVLLPSKKQRAKTKVQRGP-NPVFNETFTFsRVEPEELNN 81
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|..
gi 2125461122 225 KTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQ 266
Cdd:cd08389    82 MALRFRLYGVERMRKERLIGEKVVPLSQLNLEGETTVWLTLE 123
C2A_Synaptotagmin-7 cd08386
C2A domain first repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking ...
275-381 3.78e-19

C2A domain first repeat present in Synaptotagmin 7; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 7, a member of class 2 synaptotagmins, is located in presynaptic plasma membranes in neurons, dense-core vesicles in endocrine cells, and lysosomes in fibroblasts. It has been shown to play a role in regulation of Ca2+-dependent lysosomal exocytosis in fibroblasts and may also function as a vesicular Ca2+-sensor. It is distinguished from the other synaptotagmins by having over 12 splice forms. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176032 [Multi-domain]  Cd Length: 125  Bit Score: 82.76  E-value: 3.78e-19
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 275 KLGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNgkRLKKKKTTIKKNTLNPYYNESFSFE-VPFE 353
Cdd:cd08386     1 NLGRIQFSVSYDFQESTLTLKILKAVELPAKDFSGTSDPFVKIYLLPD--KKHKLETKVKRKNLNPHWNETFLFEgFPYE 78
                          90       100
                  ....*....|....*....|....*...
gi 2125461122 354 QIQKVQIVVTVLDYDKIGKNDAIGKVFV 381
Cdd:cd08386    79 KLQQRVLYLQVLDYDRFSRNDPIGEVSL 106
C2B_Synaptotagmin-17 cd08410
C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking ...
146-275 2.65e-18

C2 domain second repeat present in Synaptotagmin 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176055 [Multi-domain]  Cd Length: 135  Bit Score: 80.70  E-value: 2.65e-18
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKK--KKYETKVHRKTLNPVFNEQFTFKVPYSELG 223
Cdd:cd08410     1 GELLLSLNYLPSAGRLNVDIIRAKQLLQTDMSQGSDPFVKIQLVHGLKliKTKKTSCMRGTIDPFYNESFSFKVPQEELE 80
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|...
gi 2125461122 224 GKTLVMAVYDFDRFSKHDIIGeyKVAMNTVDFGHV-TEEWRDLQSAEKEEQEK 275
Cdd:cd08410    81 NVSLVFTVYGHNVKSSNDFIG--RIVIGQYSSGPSeTNHWRRMLNSQRTAVEQ 131
C2B_Munc13-like cd04009
C2 domain second repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are ...
285-385 1.18e-17

C2 domain second repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175976 [Multi-domain]  Cd Length: 133  Bit Score: 78.82  E-value: 1.18e-17
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 285 YVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKT--TIKKNTLNPYYNESFSFEVPFEQIQK--VQI 360
Cdd:cd04009    11 YRASEQSLRVEILNARNLLPLDSNGSSDPFVKVELLPRHLFPDVPTPktQVKKKTLFPLFDESFEFNVPPEQCSVegALL 90
                          90       100
                  ....*....|....*....|....*
gi 2125461122 361 VVTVLDYDKIGKNDAIGKVFVGYNS 385
Cdd:cd04009    91 LFTVKDYDLLGSNDFEGEAFLPLND 115
C2 smart00239
Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, ...
291-393 1.63e-17

Protein kinase C conserved region 2 (CalB); Ca2+-binding motif present in phospholipases, protein kinases C, and synaptotagmins (among others). Some do not appear to contain Ca2+-binding sites. Particular C2s appear to bind phospholipids, inositol polyphosphates, and intracellular proteins. Unusual occurrence in perforin. Synaptotagmin and PLC C2s are permuted in sequence with respect to N- and C-terminal beta strands. SMART detects C2 domains using one or both of two profiles.


Pssm-ID: 214577 [Multi-domain]  Cd Length: 101  Bit Score: 77.53  E-value: 1.63e-17
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  291 KLTVVILEAKNLKKMDVGGLSDPYVKIHLmqNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKvqIVVTVLDYDKI 370
Cdd:smart00239   1 TLTVKIISARNLPPKDKGGKSDPYVKVSL--DGDPKEKKKTKVVKNTLNPVWNETFEFEVPPPELAE--LEIEVYDKDRF 76
                           90       100
                   ....*....|....*....|...
gi 2125461122  371 GKNDAIGKVFVGYNSTGAELRHW 393
Cdd:smart00239  77 GRDDFIGQVTIPLSDLLLGGRHE 99
C2A_Rabphilin_Doc2 cd04035
C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons ...
276-379 2.88e-17

C2 domain first repeat present in Rabphilin and Double C2 domain; Rabphilin is found neurons and in neuroendrocrine cells, while Doc2 is found not only in the brain but in tissues, including mast cells, chromaffin cells, and osteoblasts. Rabphilin and Doc2s share highly homologous tandem C2 domains, although their N-terminal structures are completely different: rabphilin contains an N-terminal Rab-binding domain (RBD),7 whereas Doc2 contains an N-terminal Munc13-1-interacting domain (MID). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176000 [Multi-domain]  Cd Length: 123  Bit Score: 77.32  E-value: 2.88e-17
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFE-VPFEQ 354
Cdd:cd04035     1 LGTLEFTLLYDPANSALHCTIIRAKGLKAMDANGLSDPYVKLNLLPGASKATKLRTKTVHKTRNPEFNETLTYYgITEED 80
                          90       100
                  ....*....|....*....|....*
gi 2125461122 355 IQKVQIVVTVLDYDKIGkNDAIGKV 379
Cdd:cd04035    81 IQRKTLRLLVLDEDRFG-NDFLGET 104
C2 cd00030
C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed ...
292-410 4.08e-17

C2 domain; The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175973 [Multi-domain]  Cd Length: 102  Bit Score: 76.34  E-value: 4.08e-17
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKKMDVGGLSDPYVKIHLMQngkrLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKvqIVVTVLDYDKIG 371
Cdd:cd00030     1 LRVTVIEARNLPAKDLNGKSDPYVKVSLGG----KQKFKTKVVKNTLNPVWNETFEFPVLDPESDT--LTVEVWDKDRFS 74
                          90       100       110
                  ....*....|....*....|....*....|....*....
gi 2125461122 372 KNDAIGKVFVGYNStgaelrhwsdmLANPRRPIAQWHTL 410
Cdd:cd00030    75 KDDFLGEVEIPLSE-----------LLDSGKEGELWLPL 102
C2B_SLP_1-2-3-4 cd04020
C2 domain second repeat present in Synaptotagmin-like proteins 1-4; All Slp members basically ...
277-400 3.95e-16

C2 domain second repeat present in Synaptotagmin-like proteins 1-4; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175987 [Multi-domain]  Cd Length: 162  Bit Score: 75.44  E-value: 3.95e-16
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTA------------GKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNE 344
Cdd:cd04020     2 GELKVALKYVPPEsegalkskkpstGELHVWVKEAKNLPALKSGGTSDSFVKCYLLPDKSKKSKQKTPVVKKSVNPVWNH 81
                          90       100       110       120       130       140       150
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 345 SFSFE-VPFEQIQKVQIVVTVLDYDKIGKNDAIGKV------FVGY-------NSTGAELRHWSDMLANP 400
Cdd:cd04020    82 TFVYDgVSPEDLSQACLELTVWDHDKLSSNDFLGGVrlglgtGKSYgqavdwmDSTGEEILLWQKMLDNP 151
C2B_PI3K_class_II cd08381
C2 domain second repeat present in class II phosphatidylinositol 3-kinases (PI3Ks); There are ...
146-262 9.95e-16

C2 domain second repeat present in class II phosphatidylinositol 3-kinases (PI3Ks); There are 3 classes of PI3Ks based on structure, regulation, and specificity. All classes contain a N-terminal C2 domain, a PIK domain, and a kinase catalytic domain. Unlike class I and class III, class II PI3Ks have additionally a PX domain and a C-terminal C2 domain containing a nuclear localization signal both of which bind phospholipids though in a slightly different fashion. PI3Ks (AKA phosphatidylinositol (PtdIns) 3-kinases) regulate cell processes such as cell growth, differentiation, proliferation, and motility. PI3Ks work on phosphorylation of phosphatidylinositol, phosphatidylinositide (4)P (PtdIns (4)P),2 or PtdIns(4,5)P2. Specifically they phosphorylate the D3 hydroxyl group of phosphoinositol lipids on the inositol ring. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176027 [Multi-domain]  Cd Length: 122  Bit Score: 73.10  E-value: 9.95e-16
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYdfQNNQLLVGIIQAAELPALDmGGTSDPYVKVFLLPD--KKKKYETKVHRKTLNPVFNEQFTF-KVPYSEL 222
Cdd:cd08381     2 GQVKLSISY--KNGTLFVMVMHAKNLPLLD-GSDPDPYVKTYLLPDpqKTTKRKTKVVRKTRNPTFNEMLVYdGLPVEDL 78
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|
gi 2125461122 223 GGKTLVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEW 262
Cdd:cd08381    79 QQRVLQVSVWSHDSLVENEFLGGVCIPLKKLDLSQETEKW 118
C2_PKC_alpha_gamma cd04026
C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha ...
288-415 1.17e-15

C2 domain in Protein Kinase C (PKC) alpha and gamma; A single C2 domain is found in PKC alpha and gamma. The PKC family of serine/threonine kinases regulates apoptosis, proliferation, migration, motility, chemo-resistance, and differentiation. There are 3 groups: group 1(alpha, betaI, beta II, gamma) which require phospholipids and calcium, group 2 (delta, epsilon, theta, eta) which do not require calcium for activation, and group 3 (xi, iota/lambda) which are atypical and can be activated in the absence of diacylglycerol and calcium. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 175992 [Multi-domain]  Cd Length: 131  Bit Score: 73.06  E-value: 1.17e-15
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 288 TAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPfEQIQKVQIVVTVLDY 367
Cdd:cd04026    11 KDNKLTVEVREAKNLIPMDPNGLSDPYVKLKLIPDPKNETKQKTKTIKKTLNPVWNETFTFDLK-PADKDRRLSIEVWDW 89
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*....
gi 2125461122 368 DKIGKNDaigkvFVGYNSTG-AELRHWsdmlanprrPIAQWHTLQPEEE 415
Cdd:cd04026    90 DRTTRND-----FMGSLSFGvSELIKM---------PVDGWYKLLNQEE 124
Syt1_2_N cd21342
N-terminal domain of synaptotagmin-1 and -2; The synaptotagmins are integral membrane proteins ...
38-111 1.84e-15

N-terminal domain of synaptotagmin-1 and -2; The synaptotagmins are integral membrane proteins of synaptic vesicles thought to serve as Ca(2+) sensors in the process of vesicular trafficking and exocytosis. Calcium binding to synaptotagmin-1 participates in triggering neurotransmitter release at the synapse. In general, synaptotagmins contain 2 calcium binding C2 domains. Synaptotagmin-1 and -2 have an additional N-terminal domain that has been shown to bind to Botulinum neurotoxin B.


Pssm-ID: 409247  Cd Length: 93  Bit Score: 71.31  E-value: 1.84e-15
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125461122  38 KEDAFSNLKKKFMNELNKIPLPPWALIAIAIVAVLLILTCCFClCKKCLFKKKNKKKGKEKGGKNAINMKDVKD 111
Cdd:cd21342    21 KEDVFSKMKNKFMNELHKIPLPPWALAAIAIVAGLLLLSCCFC-ICKKCCFKKKKKKEGKKKGKAQINMKSVKE 93
C2A_Synaptotagmin-15-17 cd08390
C2A domain first repeat present in Synaptotagmins 15 and 17; Synaptotagmin is a ...
277-379 2.20e-15

C2A domain first repeat present in Synaptotagmins 15 and 17; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Synaptotagmin 17 is located in the brain, kidney, and prostate and is thought to be a peripheral membrane protein. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176036 [Multi-domain]  Cd Length: 123  Bit Score: 72.29  E-value: 2.20e-15
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLK-KMDVGGLSDPYVKIHLM-------QNGKRLKKkkttikkntLNPYYNESFSF 348
Cdd:cd08390     1 GRLWFSVQYDLEEEQLTVSLIKARNLPpRTKDVAHCDPFVKVCLLpderrslQSKVKRKT---------QNPNFDETFVF 71
                          90       100       110
                  ....*....|....*....|....*....|.
gi 2125461122 349 EVPFEQIQKVQIVVTVLDYDKIGKNDAIGKV 379
Cdd:cd08390    72 QVSFKELQRRTLRLSVYDVDRFSRHCIIGHV 102
Syt2_N cd21964
N-terminal domain of synaptotagmin-2 (Syt2) and similar proteins; Syt2, also called ...
38-111 4.00e-15

N-terminal domain of synaptotagmin-2 (Syt2) and similar proteins; Syt2, also called synaptotagmin II (SytII), exhibits calcium-dependent phospholipid and inositol polyphosphate binding properties. It may have a regulatory role in the membrane interactions during trafficking of synaptic vesicles at the active zone of the synapse. It plays a role in dendrite formation by melanocytes. The model corresponds to N-terminal domain of Syt2, which is a recognition domain responsible for the binding of botulinum neurotoxin B (BoNT B).


Pssm-ID: 409249  Cd Length: 111  Bit Score: 70.97  E-value: 4.00e-15
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125461122  38 KEDAFSNLKKKFMNELNKIPLPPWALIAIAIVAVLLILTCCFCLCKKCLFKKKNKKKGKEKGGKNAINMKDVKD 111
Cdd:cd21964    38 SEDMFAKIKEKFMNEINKIPLPPWALIAIAVVAGLLILTCCFCICKKCCCKKKKNKKEKGKGMKNAMNMKDMKG 111
C2B_RasGAP cd08675
C2 domain second repeat of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras ...
161-279 4.18e-14

C2 domain second repeat of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. The proteins here all contain two tandem C2 domains, a Ras-GAP domain, and a pleckstrin homology (PH)-like domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 176057 [Multi-domain]  Cd Length: 137  Bit Score: 68.94  E-value: 4.18e-14
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELpALDMGGTSDPYVKVFLL-PDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELGGKT------------- 226
Cdd:cd08675     1 LSVRVLECRDL-ALKSNGTCDPFARVTLNySSKTDTKRTKVKKKTNNPRFDEAFYFELTIGFSYEKKsfkveeedlekse 79
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 2125461122 227 LVMAVYDFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDLQ--SAEKEEQEKLGDI 279
Cdd:cd08675    80 LRVELWHASMVSGDDFLGEVRIPLQGLQQAGSHQAWYFLQprEAPGTRSSNDGSL 134
C2A_MCTP_PRT cd04042
C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
160-283 4.37e-14

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 176007 [Multi-domain]  Cd Length: 121  Bit Score: 68.46  E-value: 4.37e-14
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 160 QLLVGIIQAAELPALDMGGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEQFTFKVpysELGGKTLVMAVYDFDRFSK 239
Cdd:cd04042     1 QLDIHLKEGRNLAARDRGGTSDPYVKFKY--GGKTVYKSKTIYKNLNPVWDEKFTLPI---EDVTQPLYIKVFDYDRGLT 75
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....
gi 2125461122 240 HDIIGEYKVAMNTVDFGHVTEEWRDLQSAEKEEQEKLGDICFSL 283
Cdd:cd04042    76 DDFMGSAFVDLSTLELNKPTEVKLKLEDPNSDEDLGYISLVVTL 119
C2A_Synaptotagmin-8 cd08387
C2A domain first repeat present in Synaptotagmin 8; Synaptotagmin is a membrane-trafficking ...
276-379 1.75e-13

C2A domain first repeat present in Synaptotagmin 8; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176033 [Multi-domain]  Cd Length: 124  Bit Score: 66.66  E-value: 1.75e-13
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNgkRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd08387     2 RGELHFSLEYDKDMGILNVKLIQARNLQPRDFSGTADPYCKVRLLPD--RSNTKQSKIHKKTLNPEFDESFVFEVPPQEL 79
                          90       100
                  ....*....|....*....|....
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKV 379
Cdd:cd08387    80 PKRTLEVLLYDFDQFSRDECIGVV 103
C2A_RasGAP cd08383
C2 domain (first repeat) of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras ...
160-285 7.08e-13

C2 domain (first repeat) of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. The proteins here all contain either a single C2 domain or two tandem C2 domains, a Ras-GAP domain, and a pleckstrin homology (PH)-like domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 176029 [Multi-domain]  Cd Length: 117  Bit Score: 64.98  E-value: 7.08e-13
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 160 QLLVGIIQAAELPAldmGGTSDPYVKVFLlpDKKKKYETKVhRKTLNPVFNEQFTFKVPYSELGGKTLvmAVYDFDRFSK 239
Cdd:cd08383     1 SLRLRILEAKNLPS---KGTRDPYCTVSL--DQVEVARTKT-VEKLNPFWGEEFVFDDPPPDVTFFTL--SFYNKDKRSK 72
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*...
gi 2125461122 240 HDIIGEYKVAMNTVDFGHVTEEWRDLQS--AEKEEQeklGDICFSLRY 285
Cdd:cd08383    73 DRDIVIGKVALSKLDLGQGKDEWFPLTPvdPDSEVQ---GSVRLRARY 117
C2E_Ferlin cd04037
C2 domain fifth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
165-245 1.13e-12

C2 domain fifth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.


Pssm-ID: 176002 [Multi-domain]  Cd Length: 124  Bit Score: 64.49  E-value: 1.13e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPALDMGGTSDPYVKVFLLpdkKKKYETKVH--RKTLNPVFNEQFTFK--VPyselGGKTLVMAVYDFDRFSKH 240
Cdd:cd04037     6 VVRARNLQPKDPNGKSDPYLKIKLG---KKKINDRDNyiPNTLNPVFGKMFELEatLP----GNSILKISVMDYDLLGSD 78

                  ....*
gi 2125461122 241 DIIGE 245
Cdd:cd04037    79 DLIGE 83
C2_Kibra cd08680
C2 domain found in Human protein Kibra; Kibra is thought to be a regulator of the Salvador ...
147-227 1.50e-12

C2 domain found in Human protein Kibra; Kibra is thought to be a regulator of the Salvador (Sav)/Warts (Wts)/Hippo (Hpo) (SWH) signaling network, which limits tissue growth by inhibiting cell proliferation and promoting apoptosis. The core of the pathway consists of a MST and LATS family kinase cascade that ultimately phosphorylates and inactivates the YAP/Yorkie (Yki) transcription coactivator. The FERM domain proteins Merlin (Mer) and Expanded (Ex) are part of the upstream regulation controlling pathway mechanism. Kibra colocalizes and associates with Mer and Ex and is thought to transduce an extracellular signal via the SWH network. The apical scaffold machinery that contains Hpo, Wts, and Ex recruits Yki to the apical membrane facilitating its inhibitory phosphorlyation by Wts. Since Kibra associates with Ex and is apically located it is hypothesized that KIBRA is part of the scaffold, helps in the Hpo/Wts complex, and helps recruit Yki for inactivation that promotes SWH pathway activity. Kibra contains two amino-terminal WW domains, an internal C2-like domain, and a carboxy-terminal glutamic acid-rich stretch. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176062  Cd Length: 124  Bit Score: 64.17  E-value: 1.50e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 147 KIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLP---DKKKKYETKVHRKTLNPVFNEQFTFKVPYSELG 223
Cdd:cd08680     2 QVQIGLRYDSGDSSLVISVEQLRNLSALSIPENSKVYVRVALLPcssSTSCLFRTKALEDQDKPVFNEVFRVPISSTKLY 81

                  ....
gi 2125461122 224 GKTL 227
Cdd:cd08680    82 QKTL 85
C2B_Synaptotagmin-15 cd08409
C2 domain second repeat present in Synaptotagmin 15; Synaptotagmin is a membrane-trafficking ...
145-231 3.29e-12

C2 domain second repeat present in Synaptotagmin 15; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. It is thought to be involved in the trafficking and exocytosis of secretory vesicles in non-neuronal tissues and is Ca2+ independent. Human synaptotagmin 15 has 2 alternatively spliced forms that encode proteins with different C-termini. The larger, SYT15a, contains a N-terminal TM region, a putative fatty-acylation site, and 2 tandem C terminal C2 domains. The smaller, SYT15b, lacks the C-terminal portion of the second C2 domain. Unlike most other synaptotagmins it is nearly absent in the brain and rather is found in the heart, lungs, skeletal muscle, and testis. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176054 [Multi-domain]  Cd Length: 137  Bit Score: 63.51  E-value: 3.29e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTsDPYVKVFLLPDKK--KKYETKVHRKTLNPVFNEQFTFKVPYSEL 222
Cdd:cd08409     1 LGDIQISLTYNPTLNRLTVVVLRARGLRQLDHAHT-SVYVKVSLMIHNKvvKTKKTEVVDGAASPSFNESFSFKVTSRQL 79

                  ....*....
gi 2125461122 223 GGKTLVMAV 231
Cdd:cd08409    80 DTASLSLSV 88
C2C_KIAA1228 cd04030
C2 domain third repeat present in uncharacterized human KIAA1228-like proteins; KIAA proteins ...
276-381 3.64e-12

C2 domain third repeat present in uncharacterized human KIAA1228-like proteins; KIAA proteins are uncharacterized human proteins. They were compiled by the Kazusa mammalian cDNA project which identified more than 2000 human genes. They are identified by 4 digit codes that precede the KIAA designation. Many KIAA genes are still functionally uncharacterized including KIAA1228. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175996 [Multi-domain]  Cd Length: 127  Bit Score: 63.06  E-value: 3.64e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd04030     2 LGRIQLTIRYSSQRQKLIVTVHKCRNLPPCDSSDIPDPYVRLYLLPDKSKSTRRKTSVKKDNLNPVFDETFEFPVSLEEL 81
                          90       100
                  ....*....|....*....|....*...
gi 2125461122 356 QKVQIVVTVLDYDKI--GKNDAIGKVFV 381
Cdd:cd04030    82 KRRTLDVAVKNSKSFlsREKKLLGQVLI 109
C2D_Tricalbin-like cd04040
C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
292-381 4.71e-12

C2 domain fourth repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.


Pssm-ID: 176005 [Multi-domain]  Cd Length: 115  Bit Score: 62.59  E-value: 4.71e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKKMDVGGLSDPYVKIHLmqNGkrLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKVQIVvtVLDYDKIG 371
Cdd:cd04040     1 LTVDVISAENLPSADRNGKSDPFVKFYL--NG--EKVFKTKTIKKTLNPVWNESFEVPVPSRVRAVLKVE--VYDWDRGG 74
                          90
                  ....*....|
gi 2125461122 372 KNDAIGKVFV 381
Cdd:cd04040    75 KDDLLGSAYI 84
C2A_Synaptotagmin-4-11 cd08388
C2A domain first repeat present in Synaptotagmins 4 and 11; Synaptotagmin is a ...
275-380 7.04e-12

C2A domain first repeat present in Synaptotagmins 4 and 11; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmins 4 and 11, class 4 synaptotagmins, are located in the brain. Their functions are unknown. They are distinguished from the other synaptotagmins by having and Asp to Ser substitution in their C2A domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176034 [Multi-domain]  Cd Length: 128  Bit Score: 62.37  E-value: 7.04e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 275 KLGDICFSLRYVPTAGKLTVVILEAKNLKKMDV-GGLSDPYVKIHLMQNgkRLKKKKTTIKKNTLNPYYNESFSF-EVPF 352
Cdd:cd08388     1 KLGTLFFSLRYNSEKKALLVNIIECRDLPAMDEqSGTSDPYVKLQLLPE--KEHKVKTRVLRKTRNPVYDETFTFyGIPY 78
                          90       100
                  ....*....|....*....|....*...
gi 2125461122 353 EQIQKVQIVVTVLDYDKIGKNDAIGKVF 380
Cdd:cd08388    79 NQLQDLSLHFAVLSFDRYSRDDVIGEVV 106
C2_KIAA0528-like cd08688
C2 domain found in the Human KIAA0528 cDNA clone; The members of this CD are named after the ...
163-251 8.01e-12

C2 domain found in the Human KIAA0528 cDNA clone; The members of this CD are named after the Human KIAA0528 cDNA clone. All members here contain a single C2 repeat. No other information on this protein is currently known. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176070 [Multi-domain]  Cd Length: 110  Bit Score: 61.55  E-value: 8.01e-12
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 163 VGIIQAAELPALD-MGGTSDPYVKVFLLpdkKKKYETKVHRKTLNPVFN-EQFTFKVPYSELGGKTLVMAVYDFDRFSKH 240
Cdd:cd08688     3 VRVVAARDLPVMDrSSDLTDAFVEVKFG---STTYKTDVVKKSLNPVWNsEWFRFEVDDEELQDEPLQIRVMDHDTYSAN 79
                          90
                  ....*....|.
gi 2125461122 241 DIIGEYKVAMN 251
Cdd:cd08688    80 DAIGKVYIDLN 90
C2A_RIM1alpha cd04031
C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are ...
277-381 1.10e-11

C2 domain first repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.


Pssm-ID: 175997 [Multi-domain]  Cd Length: 125  Bit Score: 61.88  E-value: 1.10e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSF-EVPFEQI 355
Cdd:cd04031     3 GRIQIQLWYDKVTSQLIVTVLQARDLPPRDDGSLRNPYVKVYLLPDRSEKSKRRTKTVKKTLNPEWNQTFEYsNVRRETL 82
                          90       100
                  ....*....|....*....|....*.
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFV 381
Cdd:cd04031    83 KERTLEVTVWDYDRDGENDFLGEVVI 108
C2E_Ferlin cd04037
C2 domain fifth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
294-414 1.25e-11

C2 domain fifth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fifth C2 repeat, C2E, and has a type-II topology.


Pssm-ID: 176002 [Multi-domain]  Cd Length: 124  Bit Score: 61.41  E-value: 1.25e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 294 VVILEAKNLKKMDVGGLSDPYVKIHLmqnGKRLKKKKTTIKKNTLNPYYNESFSFE--VPFEQIQKVQivvtVLDYDKIG 371
Cdd:cd04037     4 VYVVRARNLQPKDPNGKSDPYLKIKL---GKKKINDRDNYIPNTLNPVFGKMFELEatLPGNSILKIS----VMDYDLLG 76
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2125461122 372 KNDAIGKVFVG----YNStgaelRHWSDMLANP----RRPIAQWHTLQPEE 414
Cdd:cd04037    77 SDDLIGETVIDledrFFS-----KHRATCGLPPtyeeSGPNQWRDSLKPSG 122
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
161-261 2.38e-11

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 65.94  E-value: 2.38e-11
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  161 LLVGIIQAAELPALDMGGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELggKTLVMAVYDFDRFSKH 240
Cdd:COG5038   1042 LTIMLRSGENLPSSDENGYSDPFVKLFL--NEKSVYKTKVVKKTLNPVWNEEFTIEVLNRVK--DVLTINVNDWDSGEKN 1117
                           90       100
                   ....*....|....*....|.
gi 2125461122  241 DIIGEYKVAMNTVDFGHVTEE 261
Cdd:COG5038   1118 DLLGTAEIDLSKLEPGGTTNS 1138
C2B_RasA1_RasA4 cd04025
C2 domain second repeat present in RasA1 and RasA4; RasA1 and RasA4 are GAP1s (GTPase ...
165-284 2.54e-11

C2 domain second repeat present in RasA1 and RasA4; RasA1 and RasA4 are GAP1s (GTPase activating protein 1s ), Ras-specific GAP members, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. Both proteins contain two C2 domains, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175991 [Multi-domain]  Cd Length: 123  Bit Score: 60.58  E-value: 2.54e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPALDMGGTSDPYVKVFLlpdKKKKYETKVHRKTLNPVFNEQFTFKVPysELGGKTLVMAVYDFDRFSKHDIIG 244
Cdd:cd04025     6 VLEARDLAPKDRNGTSDPFVRVFY---NGQTLETSVVKKSCYPRWNEVFEFELM--EGADSPLSVEVWDWDLVSKNDFLG 80
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 2125461122 245 EYKVAMNTVDFGHVTEEWRDLQ---SAEKEEQEKLGDICFSLR 284
Cdd:cd04025    81 KVVFSIQTLQQAKQEEGWFRLLpdpRAEEESGGNLGSLRLKVR 123
C2B_MCTP_PRT cd08376
C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
166-269 2.91e-11

C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176022 [Multi-domain]  Cd Length: 116  Bit Score: 60.35  E-value: 2.91e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 166 IQAAELPALDMGGTSDPYVKvFLLPDKKKKyeTKVHRKTLNPVFNEQFTFKVpYSELGGkTLVMAVYDFDRFSKHDIIGE 245
Cdd:cd08376     7 VEGKNLPPMDDNGLSDPYVK-FRLGNEKYK--SKVCSKTLNPQWLEQFDLHL-FDDQSQ-ILEIEVWDKDTGKKDEFIGR 81
                          90       100
                  ....*....|....*....|....
gi 2125461122 246 YKVAMNTVDFGHVTEEWRDLQSAE 269
Cdd:cd08376    82 CEIDLSALPREQTHSLELELEDGE 105
C2B_RIM1alpha cd04028
C2 domain second repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are ...
145-265 3.23e-11

C2 domain second repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.


Pssm-ID: 175994 [Multi-domain]  Cd Length: 146  Bit Score: 60.86  E-value: 3.23e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 145 LGKIQYSLDYdfQNNQLLVGIIQAAEL-PALDMGGTSDPYVKVFLLPDKK--KKYETKVHRKTLNPVFNEQFTFKVPYSe 221
Cdd:cd04028    17 MGDIQLGLYD--KKGQLEVEVIRARGLvQKPGSKVLPAPYVKVYLLEGKKciAKKKTKIARKTLDPLYQQQLVFDVSPT- 93
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 2125461122 222 lgGKTLVMAVY-DFDRFSKHDIIGEYKVAMNTVDFGHVTEEWRDL 265
Cdd:cd04028    94 --GKTLQVIVWgDYGRMDKKVFMGVAQILLDDLDLSNLVIGWYKL 136
C2_ArfGAP cd04038
C2 domain present in Arf GTPase Activating Proteins (GAP); ArfGAP is a GTPase activating ...
161-245 4.20e-11

C2 domain present in Arf GTPase Activating Proteins (GAP); ArfGAP is a GTPase activating protein which regulates the ADP ribosylation factor Arf, a member of the Ras superfamily of GTP-binding proteins. The GTP-bound form of Arf is involved in Golgi morphology and is involved in recruiting coat proteins. ArfGAP is responsible for the GDP-bound form of Arf which is necessary for uncoating the membrane and allowing the Golgi to fuse with an acceptor compartment. These proteins contain an N-terminal ArfGAP domain containing the characteristic zinc finger motif (Cys-x2-Cys-x(16,17)-x2-Cys) and C-terminal C2 domain. C2 domains were first identified in Protein Kinase C (PKC). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176003 [Multi-domain]  Cd Length: 145  Bit Score: 60.80  E-value: 4.20e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGgTSDPYVKVFLLPDKKKkyeTKVHRKTLNPVFNEQFTFKVPYSELggkTLVMAVYDFDRFSKH 240
Cdd:cd04038     4 LKVRVVRGTNLAVRDFT-SSDPYVVLTLGNQKVK---TRVIKKNLNPVWNEELTLSVPNPMA---PLKLEVFDKDTFSKD 76

                  ....*
gi 2125461122 241 DIIGE 245
Cdd:cd04038    77 DSMGE 81
C2B_Ferlin cd04011
C2 domain second repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
157-253 4.56e-11

C2 domain second repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 175978 [Multi-domain]  Cd Length: 111  Bit Score: 59.51  E-value: 4.56e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 157 QNNQLLVGIIQAAELPaldmGGTSDPYVKVFLLPDKKKkyeTKVHRKTLNPVFNEQ--FTFKVPYSELGGKTLVMAVYDF 234
Cdd:cd04011     2 QDFQVRVRVIEARQLV----GGNIDPVVKVEVGGQKKY---TSVKKGTNCPFYNEYffFNFHESPDELFDKIIKISVYDS 74
                          90
                  ....*....|....*....
gi 2125461122 235 DRFSKHDIIGEYKVAMNTV 253
Cdd:cd04011    75 RSLRSDTLIGSFKLDVGTV 93
C2_PLC_like cd00275
C2 domain present in Phosphoinositide-specific phospholipases C (PLC); PLCs are involved in ...
171-246 5.09e-11

C2 domain present in Phosphoinositide-specific phospholipases C (PLC); PLCs are involved in the hydrolysis of phosphatidylinositol-4,5-bisphosphate (PIP2) to d-myo-inositol-1,4,5-trisphosphate (1,4,5-IP3) and sn-1,2-diacylglycerol (DAG). 1,4,5-IP3 and DAG are second messengers in eukaryotic signal transduction cascades. PLC is composed of a N-terminal PH domain followed by a series of EF hands, a catalytic TIM barrel and a C-terminal C2 domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-II topology.


Pssm-ID: 175974 [Multi-domain]  Cd Length: 128  Bit Score: 59.86  E-value: 5.09e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 171 LPALDMGGTSDPYVKVFLL---PDKKKKYETK-VHRKTLNPVFNEQFTFKVPYSELGgkTLVMAVYDFDRFsKHDIIGEY 246
Cdd:cd00275    16 KPKGDKGSIVDPYVEVEIHglpADDSAKFKTKvVKNNGFNPVWNETFEFDVTVPELA--FLRFVVYDEDSG-DDDFLGQA 92
C2A_SLP-1_2 cd08393
C2 domain first repeat present in Synaptotagmin-like proteins 1 and 2; All Slp members ...
277-381 8.77e-11

C2 domain first repeat present in Synaptotagmin-like proteins 1 and 2; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike Slp3 and Slp4/granuphilin which are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176039 [Multi-domain]  Cd Length: 125  Bit Score: 58.98  E-value: 8.77e-11
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDV-GGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd08393     2 GSVQFALDYDPKLRELHVHVIQCQDLAAADPkKQRSDPYVKTYLLPDKSNRGKRKTSVKKKTLNPVFNETLRYKVEREEL 81
                          90       100
                  ....*....|....*....|....*.
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFV 381
Cdd:cd08393    82 PTRVLNLSVWHRDSLGRNSFLGEVEV 107
C2B_Synaptotagmin-12 cd08406
C2 domain second repeat present in Synaptotagmin 12; Synaptotagmin is a membrane-trafficking ...
146-244 1.02e-10

C2 domain second repeat present in Synaptotagmin 12; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 12, a member of class 6 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmins 8 and 13, do not have any consensus Ca2+ binding sites. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176051 [Multi-domain]  Cd Length: 136  Bit Score: 59.42  E-value: 1.02e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKK--KYETKVHRKTLNPVFNEQFTFKVPYSELG 223
Cdd:cd08406     2 GEILLSLSYLPTAERLTVVVVKARNLVWDNGKTTADPFVKVYLLQDGRKisKKKTSVKRDDTNPIFNEAMIFSVPAIVLQ 81
                          90       100
                  ....*....|....*....|.
gi 2125461122 224 GKTLVMAVYDFDRFSKHDIIG 244
Cdd:cd08406    82 DLSLRVTVAESTEDGKTPNVG 102
C2_KIAA0528-like cd08688
C2 domain found in the Human KIAA0528 cDNA clone; The members of this CD are named after the ...
292-385 1.07e-10

C2 domain found in the Human KIAA0528 cDNA clone; The members of this CD are named after the Human KIAA0528 cDNA clone. All members here contain a single C2 repeat. No other information on this protein is currently known. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176070 [Multi-domain]  Cd Length: 110  Bit Score: 58.47  E-value: 1.07e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKKMD-VGGLSDPYVKIHLMQNgkrlkKKKTTIKKNTLNPYYN-ESFSFEVPFEQIQKVQIVVTVLDYDK 369
Cdd:cd08688     1 LKVRVVAARDLPVMDrSSDLTDAFVEVKFGST-----TYKTDVVKKSLNPVWNsEWFRFEVDDEELQDEPLQIRVMDHDT 75
                          90
                  ....*....|....*.
gi 2125461122 370 IGKNDAIGKVFVGYNS 385
Cdd:cd08688    76 YSANDAIGKVYIDLNP 91
C2_NEDD4_NEDD4L cd04033
C2 domain present in the Human neural precursor cell-expressed, developmentally down-regulated ...
161-251 1.61e-10

C2 domain present in the Human neural precursor cell-expressed, developmentally down-regulated 4 (NEDD4) and NEDD4-like (NEDD4L/NEDD42); Nedd4 and Nedd4-2 are two of the nine members of the Human Nedd4 family. All vertebrates appear to have both Nedd4 and Nedd4-2 genes. They are thought to participate in the regulation of epithelial Na+ channel (ENaC) activity. They also have identical specificity for ubiquitin conjugating enzymes (E2). Nedd4 and Nedd4-2 are composed of a C2 domain, 2-4 WW domains, and a ubiquitin ligase Hect domain. Their WW domains can bind PPxY (PY) or LPSY motifs, and in vitro studies suggest that WW3 and WW4 of both proteins bind PY motifs in the key substrates, with WW3 generally exhibiting higher affinity. Most Nedd4 family members, especially Nedd4-2, also have multiple splice variants, which might play different roles in regulating their substrates. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175999 [Multi-domain]  Cd Length: 133  Bit Score: 58.52  E-value: 1.61e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLL-PDKKK---KYETKVHRKTLNPVFNEQFTFKVPYSElggKTLVMAVYDFDR 236
Cdd:cd04033     2 LRVKVLAGIDLAKKDIFGASDPYVKISLYdPDGNGeidSVQTKTIKKTLNPKWNEEFFFRVNPRE---HRLLFEVFDENR 78
                          90
                  ....*....|....*
gi 2125461122 237 FSKHDIIGEYKVAMN 251
Cdd:cd04033    79 LTRDDFLGQVEVPLN 93
C2A_SLP-4_5 cd04029
C2 domain first repeat present in Synaptotagmin-like proteins 4 and 5; All Slp members ...
277-385 1.61e-10

C2 domain first repeat present in Synaptotagmin-like proteins 4 and 5; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. SHD of Slp (except for the Slp4-SHD) function as a specific Rab27A/B-binding domain. In addition to Slp, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp4/granuphilin promotes dense-core vesicle exocytosis. The C2A domain of Slp4 is Ca2+ dependent. Slp5 mRNA has been shown to be restricted to human placenta and liver suggesting a role in Rab27A-dependent membrane trafficking in specific tissues. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 175995 [Multi-domain]  Cd Length: 125  Bit Score: 58.22  E-value: 1.61e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNLKKMDVG-GLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEQI 355
Cdd:cd04029     2 GEILFSLSYDYKTQSLNVHVKECRNLAYGDEAkKRSNPYVKTYLLPDKSRQSKRKTSIKRNTTNPVYNETLKYSISHSQL 81
                          90       100       110
                  ....*....|....*....|....*....|
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFVGYNS 385
Cdd:cd04029    82 ETRTLQLSVWHYDRFGRNTFLGEVEIPLDS 111
C2B_Copine cd04047
C2 domain second repeat in Copine; There are 2 copies of the C2 domain present in copine, a ...
171-260 2.39e-10

C2 domain second repeat in Copine; There are 2 copies of the C2 domain present in copine, a protein involved in membrane trafficking, protein-protein interactions, and perhaps even cell division and growth. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176012 [Multi-domain]  Cd Length: 110  Bit Score: 57.58  E-value: 2.39e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 171 LPALDMGGTSDPYVKVF-LLPDKKKK--YETKVHRKTLNPVFNEqftFKVPYSELGG----KTLVMAVYDFDRFSKHDII 243
Cdd:cd04047    12 LDKKDFFGKSDPFLEISrQSEDGTWVlvYRTEVIKNTLNPVWKP---FTIPLQKLCNgdydRPIKIEVYDYDSSGKHDLI 88
                          90
                  ....*....|....*..
gi 2125461122 244 GEYKVAMNTVDFGHVTE 260
Cdd:cd04047    89 GEFETTLDELLKSSPLE 105
C2A_Synaptotagmin-like cd04024
C2 domain first repeat present in Synaptotagmin-like proteins; Synaptotagmin is a ...
161-279 2.88e-10

C2 domain first repeat present in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 175990 [Multi-domain]  Cd Length: 128  Bit Score: 57.82  E-value: 2.88e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMG--GTSDPYVKVFLlpdKKKKYETKVHRKTLNPVFNEQFTFkvPYSELGGKTLVMAVYDFDRFS 238
Cdd:cd04024     3 LRVHVVEAKDLAAKDRSgkGKSDPYAILSV---GAQRFKTQTIPNTLNPKWNYWCEF--PIFSAQNQLLKLILWDKDRFA 77
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 2125461122 239 KHDIIGEYKVAMNTVDFGHVTEE---WRDLQSAE-KEEQEKLGDI 279
Cdd:cd04024    78 GKDYLGEFDIALEEVFADGKTGQsdkWITLKSTRpGKTSVVSGEI 122
C2B_Synaptotagmin-14_16 cd08408
C2 domain second repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are ...
151-252 3.27e-10

C2 domain second repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are membrane-trafficking proteins in specific tissues outside the brain. Both of these contain C-terminal tandem C2 repeats, but only Synaptotagmin 14 has an N-terminal transmembrane domain and a putative fatty-acylation site. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium and this is indeed the case here. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176053 [Multi-domain]  Cd Length: 138  Bit Score: 57.76  E-value: 3.27e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 151 SLDYDFQNNQLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKK---KYETKVHRKTLNPVFNEQFTFKVPYSELGGKTL 227
Cdd:cd08408     7 GLEYNALTGRLSVEVIKGSNFKNLAMNKAPDTYVKLTLLNSDGQeisKSKTSIRRGQPDPEFKETFVFQVALFQLSEVTL 86
                          90       100
                  ....*....|....*....|....*
gi 2125461122 228 VMAVYDFDRFSKHDIIGEYKVAMNT 252
Cdd:cd08408    87 MFSVYNKRKMKRKEMIGWFSLGLNS 111
C2_PSD cd04039
C2 domain present in Phosphatidylserine decarboxylase (PSD); PSD is involved in the ...
165-253 3.73e-10

C2 domain present in Phosphatidylserine decarboxylase (PSD); PSD is involved in the biosynthesis of aminophospholipid by converting phosphatidylserine (PtdSer) to phosphatidylethanolamine (PtdEtn). There is a single C2 domain present and it is thought to confer PtdSer binding motif that is common to PKC and synaptotagmin. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176004 [Multi-domain]  Cd Length: 108  Bit Score: 56.88  E-value: 3.73e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPAL--------DMggtsDPYVKVFLlpdKKKKYETKVHRKTLNPVFNEQFTFKVpYSELGGKTLVMAVYDFDR 236
Cdd:cd04039     7 IKSITDLPPLknmtrtgfDM----DPFVIISF---GRRVFRTSWRRHTLNPVFNERLAFEV-YPHEKNFDIQFKVLDKDK 78
                          90
                  ....*....|....*..
gi 2125461122 237 FSKHDIIGEYKVAMNTV 253
Cdd:cd04039    79 FSFNDYVATGSLSVQEL 95
C2A_SLP-3 cd08392
C2 domain first repeat present in Synaptotagmin-like protein 3; All Slp members basically ...
146-255 5.01e-10

C2 domain first repeat present in Synaptotagmin-like protein 3; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. SHD of Slp (except for the Slp4-SHD) function as a specific Rab27A/B-binding domain. In addition to Slp, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. Little is known about the expression or localization of Slp3. The C2A domain of Slp3 is Ca2+ dependent. It has been demonstrated that Slp3 promotes dense-core vesicle exocytosis. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176038 [Multi-domain]  Cd Length: 128  Bit Score: 57.15  E-value: 5.01e-10
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPALDMGGTS-DPYVKVFLLPDKKK--KYETKVHRKTLNPVFNEQFTFKVPYSEL 222
Cdd:cd08392     2 GEIEFALHYNFRTSCLEITIKACRNLAYGDEKKKKcHPYVKVCLLPDKSHnsKRKTAVKKGTVNPVFNETLKYVVEADLL 81
                          90       100       110
                  ....*....|....*....|....*....|...
gi 2125461122 223 GGKTLVMAVYDFDRFSKHDIIGEYKVAMNTVDF 255
Cdd:cd08392    82 SSRQLQVSVWHSRTLKRRVFLGEVLIPLADWDF 114
C2A_C2C_Synaptotagmin_like cd08391
C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a ...
165-269 1.11e-09

C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains either the first or third repeat in Synaptotagmin-like proteins with a type-I topology.


Pssm-ID: 176037 [Multi-domain]  Cd Length: 121  Bit Score: 55.76  E-value: 1.11e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPALDMG------GTSDPYVKVFLLPdkkKKYETKVHRKTLNPVFNEqfTFKVPYSELGGKTLVMAVYDFDRfS 238
Cdd:cd08391     7 VIEAQDLVAKDKFvgglvkGKSDPYVIVRVGA---QTFKSKVIKENLNPKWNE--VYEAVVDEVPGQELEIELFDEDP-D 80
                          90       100       110
                  ....*....|....*....|....*....|.
gi 2125461122 239 KHDIIGEYKVAMNTVDFGHVTEEWRDLQSAE 269
Cdd:cd08391    81 KDDFLGRLSIDLGSVEKKGFIDEWLPLEDVK 111
C2A_Synaptotagmin-13 cd08677
C2 domain; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal ...
147-265 3.21e-09

C2 domain; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 13, a member of class 6 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmins 8 and 12, does not have any consensus Ca2+ binding sites. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This CD contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176059  Cd Length: 118  Bit Score: 54.53  E-value: 3.21e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 147 KIQYSLDYDFQNNQLLVGIIQAaELPALDMGgtSDPYVK-VFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPYSELGGK 225
Cdd:cd08677     2 KLHYSLSYDKQKAELHVNILEA-ENISVDAG--CECYISgCVSVSEGQKEAQTALKKLALHTQWEEELVFPLPEEESLDG 78
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|..
gi 2125461122 226 TLVMAVYDFDRFSKHDIIGE--YKVAMNTVDFGhvTEEWRDL 265
Cdd:cd08677    79 TLTLTLRCCDRFSRHSTLGElrLKLADVSMMLG--AAQWVDL 118
C2_NEDD4_NEDD4L cd04033
C2 domain present in the Human neural precursor cell-expressed, developmentally down-regulated ...
292-392 3.35e-09

C2 domain present in the Human neural precursor cell-expressed, developmentally down-regulated 4 (NEDD4) and NEDD4-like (NEDD4L/NEDD42); Nedd4 and Nedd4-2 are two of the nine members of the Human Nedd4 family. All vertebrates appear to have both Nedd4 and Nedd4-2 genes. They are thought to participate in the regulation of epithelial Na+ channel (ENaC) activity. They also have identical specificity for ubiquitin conjugating enzymes (E2). Nedd4 and Nedd4-2 are composed of a C2 domain, 2-4 WW domains, and a ubiquitin ligase Hect domain. Their WW domains can bind PPxY (PY) or LPSY motifs, and in vitro studies suggest that WW3 and WW4 of both proteins bind PY motifs in the key substrates, with WW3 generally exhibiting higher affinity. Most Nedd4 family members, especially Nedd4-2, also have multiple splice variants, which might play different roles in regulating their substrates. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175999 [Multi-domain]  Cd Length: 133  Bit Score: 54.67  E-value: 3.35e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKKMDVGGLSDPYVKIHLM--QNGKRLKKKKTTIKKNTLNPYYNESFSFEV-PfeqiQKVQIVVTVLDYD 368
Cdd:cd04033     2 LRVKVLAGIDLAKKDIFGASDPYVKISLYdpDGNGEIDSVQTKTIKKTLNPKWNEEFFFRVnP----REHRLLFEVFDEN 77
                          90       100
                  ....*....|....*....|....*...
gi 2125461122 369 KIGKNDAIGKVFV----GYNSTGAELRH 392
Cdd:cd04033    78 RLTRDDFLGQVEVplnnLPTETPGNERR 105
C2C_MCTP_PRT cd08377
C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
161-249 4.69e-09

C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. The cds in this family contain multiple C2 domains as well as a C-terminal PRT domain. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 176023 [Multi-domain]  Cd Length: 119  Bit Score: 53.84  E-value: 4.69e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLLPDkkkKYETKVHRKTLNPVFNEQFTFKVPYSElggKTLVMAVYDFDRFSKH 240
Cdd:cd08377     3 LQVKVIRASGLAAADIGGKSDPFCVLELVNA---RLQTHTIYKTLNPEWNKIFTFPIKDIH---DVLEVTVYDEDKDKKP 76

                  ....*....
gi 2125461122 241 DIIGeyKVA 249
Cdd:cd08377    77 EFLG--KVA 83
C2A_SLP cd08521
C2 domain first repeat present in Synaptotagmin-like proteins; All Slp members basically share ...
277-381 4.85e-09

C2 domain first repeat present in Synaptotagmin-like proteins; All Slp members basically share an N-terminal Slp homology domain (SHD) and C-terminal tandem C2 domains (named the C2A domain and the C2B domain) with the SHD and C2 domains being separated by a linker sequence of various length. Slp1/JFC1 and Slp2/exophilin 4 promote granule docking to the plasma membrane. Additionally, their C2A domains are both Ca2+ independent, unlike the case in Slp3 and Slp4/granuphilin in which their C2A domains are Ca2+ dependent. It is thought that SHD (except for the Slp4-SHD) functions as a specific Rab27A/B-binding domain. In addition to Slps, rabphilin, Noc2, and Munc13-4 also function as Rab27-binding proteins. It has been demonstrated that Slp3 and Slp4/granuphilin promote dense-core vesicle exocytosis. Slp5 mRNA has been shown to be restricted to human placenta and liver suggesting a role in Rab27A-dependent membrane trafficking in specific tissues. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176056 [Multi-domain]  Cd Length: 123  Bit Score: 54.18  E-value: 4.85e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYVPTAGKLTVVILEAKNL-----KKMdvggLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVP 351
Cdd:cd08521     1 GEIEFSLSYNYKTGSLEVHIKECRNLayadeKKK----RSNPYVKVYLLPDKSKQSKRKTSVKKNTTNPVFNETLKYHIS 76
                          90       100       110
                  ....*....|....*....|....*....|
gi 2125461122 352 FEQIQKVQIVVTVLDYDKIGKNDAIGKVFV 381
Cdd:cd08521    77 KSQLETRTLQLSVWHHDRFGRNTFLGEVEI 106
C2A_fungal cd04041
C2 domain first repeat; fungal group; C2 domains were first identified in Protein Kinase C ...
161-244 7.45e-09

C2 domain first repeat; fungal group; C2 domains were first identified in Protein Kinase C (PKC). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176006 [Multi-domain]  Cd Length: 111  Bit Score: 53.03  E-value: 7.45e-09
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMG-GTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQ-FTFKVPYSELGGKTLVMAVYDFDRFS 238
Cdd:cd04041     3 LVVTIHRATDLPKADFGtGSSDPYVTASFAKFGKPLYSTRIIRKDLNPVWEETwFVLVTPDEVKAGERLSCRLWDSDRFT 82

                  ....*.
gi 2125461122 239 KHDIIG 244
Cdd:cd04041    83 ADDRLG 88
C2A_Rasal1_RasA4 cd04054
C2 domain first repeat present in RasA1 and RasA4; Rasal1 and RasA4 are both members of GAP1 ...
161-253 1.46e-08

C2 domain first repeat present in RasA1 and RasA4; Rasal1 and RasA4 are both members of GAP1 (GTPase activating protein 1). Rasal1 responds to repetitive Ca2+ signals by associating with the plasma membrane and deactivating Ras. RasA4 suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. Both of these proteins contains two C2 domains, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176018 [Multi-domain]  Cd Length: 121  Bit Score: 52.52  E-value: 1.46e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPY--VKVfllpDKKKKYETKVHRKTLNPVFNEQFTFKVPyseLGGKTLVMAVYDFDRFS 238
Cdd:cd04054     2 LYIRIVEGKNLPAKDITGSSDPYciVKV----DNEVIIRTATVWKTLNPFWGEEYTVHLP---PGFHTVSFYVLDEDTLS 74
                          90
                  ....*....|....*
gi 2125461122 239 KHDIIGEYKVAMNTV 253
Cdd:cd04054    75 RDDVIGKVSLTREVI 89
C2D_Ferlin cd04017
C2 domain fourth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
160-244 1.66e-08

C2 domain fourth repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fourth C2 repeat, C2D, and has a type-II topology.


Pssm-ID: 175984 [Multi-domain]  Cd Length: 135  Bit Score: 52.93  E-value: 1.66e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 160 QLLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKkkyETKVHRKTLNPVFNEQFTFK-VpysELGGK---------TLVM 229
Cdd:cd04017     2 QLRAYIYQARDLLAADKSGLSDPFARVSFLNQSQ---ETEVIKETLSPTWDQTLIFDeV---ELYGSpeeiaqnppLVVV 75
                          90
                  ....*....|....*
gi 2125461122 230 AVYDFDRFSKHDIIG 244
Cdd:cd04017    76 ELFDQDSVGKDEFLG 90
C2B_RasA3 cd04010
C2 domain second repeat present in RAS p21 protein activator 3 (RasA3); RasA3 are members of ...
160-221 4.67e-08

C2 domain second repeat present in RAS p21 protein activator 3 (RasA3); RasA3 are members of GTPase activating protein 1 (GAP1), a Ras-specific GAP, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. RasA3 contains an N-terminal C2 domain, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175977 [Multi-domain]  Cd Length: 148  Bit Score: 52.01  E-value: 4.67e-08
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 2125461122 160 QLLVGIIQAAELPAldMGGTSDPYVKVFLL-PDKK---KKyeTKVHRKTLNPVFNEQFTFKVPYSE 221
Cdd:cd04010     1 KLSVRVIECSDLAL--KNGTCDPYASVTLIySNKKqdtKR--TKVKKKTNNPQFDEAFYFDVTIDS 62
C2B_RasA1_RasA4 cd04025
C2 domain second repeat present in RasA1 and RasA4; RasA1 and RasA4 are GAP1s (GTPase ...
291-381 4.75e-08

C2 domain second repeat present in RasA1 and RasA4; RasA1 and RasA4 are GAP1s (GTPase activating protein 1s ), Ras-specific GAP members, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. Both proteins contain two C2 domains, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 175991 [Multi-domain]  Cd Length: 123  Bit Score: 51.33  E-value: 4.75e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 291 KLTVVILEAKNLKKMDVGGLSDPYVKIHLmqNGKRLKKKKTTIKKNtlnPYYNESFSFEVPFEQIQKvqIVVTVLDYDKI 370
Cdd:cd04025     1 RLRCHVLEARDLAPKDRNGTSDPFVRVFY--NGQTLETSVVKKSCY---PRWNEVFEFELMEGADSP--LSVEVWDWDLV 73
                          90
                  ....*....|.
gi 2125461122 371 GKNDAIGKVFV 381
Cdd:cd04025    74 SKNDFLGKVVF 84
C2_Munc13_fungal cd04043
C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are ...
165-244 6.09e-08

C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176008 [Multi-domain]  Cd Length: 126  Bit Score: 51.11  E-value: 6.09e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPALDMGGTSDPYVkvfLLPDKKKKYE---TKVHRKTLNPVFNEQFTFKVPyselGGKTL-VMA-VYDFDRFSK 239
Cdd:cd04043     7 IVRAENLKADSSNGLSDPYV---TLVDTNGKRRiakTRTIYDTLNPRWDEEFELEVP----AGEPLwISAtVWDRSFVGK 79

                  ....*
gi 2125461122 240 HDIIG 244
Cdd:cd04043    80 HDLCG 84
C2A_Tricalbin-like cd04044
C2 domain first repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
176-287 6.34e-08

C2 domain first repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 176009 [Multi-domain]  Cd Length: 124  Bit Score: 51.02  E-value: 6.34e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 176 MGGTSDPYVkVFLLPDKKKKYETKVHRKTLNPVFNEqfTFKVPYSELGGKtLVMAVYDFDRFSKHDIIGEYKVAMNTVdf 255
Cdd:cd04044    20 IGGTVDPYV-TFSISNRRELARTKVKKDTSNPVWNE--TKYILVNSLTEP-LNLTVYDFNDKRKDKLIGTAEFDLSSL-- 93
                          90       100       110
                  ....*....|....*....|....*....|..
gi 2125461122 256 gHVTEEWRDLQSAEKEEQEKLGDICFSLRYVP 287
Cdd:cd04044    94 -LQNPEQENLTKNLLRNGKPVGELNYDLRFFP 124
C2A_MCTP_PRT cd04042
C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
291-381 7.75e-08

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 176007 [Multi-domain]  Cd Length: 121  Bit Score: 50.74  E-value: 7.75e-08
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 291 KLTVVILEAKNLKKMDVGGLSDPYVKIHLMQNgkrlKKKKTTIKKNTLNPYYNESFSfeVPFEQIQKvQIVVTVLDYDKI 370
Cdd:cd04042     1 QLDIHLKEGRNLAARDRGGTSDPYVKFKYGGK----TVYKSKTIYKNLNPVWDEKFT--LPIEDVTQ-PLYIKVFDYDRG 73
                          90
                  ....*....|.
gi 2125461122 371 GKNDAIGKVFV 381
Cdd:cd04042    74 LTDDFMGSAFV 84
C2_putative_Elicitor-responsive_gene cd04049
C2 domain present in the putative elicitor-responsive gene; In plants elicitor-responsive ...
161-281 2.33e-07

C2 domain present in the putative elicitor-responsive gene; In plants elicitor-responsive proteins are triggered in response to specific elicitor molecules such as glycolproteins, peptides, carbohydrates and lipids. A host of defensive responses are also triggered resulting in localized cell death. Antimicrobial secondary metabolites, such as phytoalexins, or defense-related proteins, including pathogenesis-related (PR) proteins are also produced. There is a single C2 domain present here. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members have a type-II topology.


Pssm-ID: 176014 [Multi-domain]  Cd Length: 124  Bit Score: 49.25  E-value: 2.33e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVkvfLLPDKKKKYETKVHR-KTLNPVFNEQFTFKVPYSELGGKT-LVMAVYDFDRFS 238
Cdd:cd04049     3 LEVLLISAKGLQDTDFLGKIDPYV---IIQCRTQERKSKVAKgDGRNPEWNEKFKFTVEYPGWGGDTkLILRIMDKDNFS 79
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 2125461122 239 KHDIIGEykvamNTVDFGHVTEEWRDLQSAE---KEEQEKLGDICF 281
Cdd:cd04049    80 DDDFIGE-----ATIHLKGLFEEGVEPGTAElvpAKYNVVLEDDTY 120
C2B_MCTP_PRT cd08376
C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
292-392 2.68e-07

C2 domain second repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. MCTP is composed of a variable N-terminal sequence, three C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176022 [Multi-domain]  Cd Length: 116  Bit Score: 48.79  E-value: 2.68e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKKMDVGGLSDPYVKIHLMQngkrlKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKVQIvvTVLDYDKIG 371
Cdd:cd08376     2 VTIVLVEGKNLPPMDDNGLSDPYVKFRLGN-----EKYKSKVCSKTLNPQWLEQFDLHLFDDQSQILEI--EVWDKDTGK 74
                          90       100
                  ....*....|....*....|.
gi 2125461122 372 KNDAIGKVFVGYNSTGAELRH 392
Cdd:cd08376    75 KDEFIGRCEIDLSALPREQTH 95
C2A_RasA2_RasA3 cd08401
C2 domain first repeat present in RasA2 and RasA3; RasA2 and RasA3 are GAP1s (GTPase ...
160-276 4.00e-07

C2 domain first repeat present in RasA2 and RasA3; RasA2 and RasA3 are GAP1s (GTPase activating protein 1s ), Ras-specific GAP members, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. RasA2 and RasA3 are both inositol 1,3,4,5-tetrakisphosphate-binding proteins and contain an N-terminal C2 domain, a Ras-GAP domain, a pleckstrin-homology (PH) domain which localizes it to the plasma membrane, and Bruton's Tyrosine Kinase (BTK) a zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176046 [Multi-domain]  Cd Length: 121  Bit Score: 48.59  E-value: 4.00e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 160 QLLVGIIQAAELPALD-MGGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEQFTFKVPYSelgGKTLVMAVYDFDRFS 238
Cdd:cd08401     1 SLKIKIGEAKNLPPRSgPNKMRDCYCTVNL--DQEEVFRTKTVEKSLCPFFGEDFYFEIPRT---FRHLSFYIYDRDVLR 75
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|..
gi 2125461122 239 KHDIIGeyKVAMNTVDFG--HVTEEWRDLQ--SAEKEEQEKL 276
Cdd:cd08401    76 RDSVIG--KVAIKKEDLHkyYGKDTWFPLQpvDADSEVQGKV 115
C2A_Copine cd04048
C2 domain first repeat in Copine; There are 2 copies of the C2 domain present in copine, a ...
165-245 7.01e-07

C2 domain first repeat in Copine; There are 2 copies of the C2 domain present in copine, a protein involved in membrane trafficking, protein-protein interactions, and perhaps even cell division and growth. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176013 [Multi-domain]  Cd Length: 120  Bit Score: 47.95  E-value: 7.01e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPALDMGGTSDPYVKVFLLPDKKKKYE----TKVHRKTLNPVFNEQFTFKVPYSELggKTLVMAVYDFD----R 236
Cdd:cd04048     6 SISCRNLLDKDVLSKSDPFVVVYVKTGGSGQWVeigrTEVIKNNLNPDFVTTFTVDYYFEEV--QKLRFEVYDVDskskD 83

                  ....*....
gi 2125461122 237 FSKHDIIGE 245
Cdd:cd04048    84 LSDHDFLGE 92
C2_Intersectin cd08375
C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally ...
160-249 7.52e-07

C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally in the intersectin protein. Intersectin functions as a scaffolding protein, providing a link between the actin cytoskeleton and the components of endocytosis and plays a role in signal transduction. In addition to C2, intersectin contains several additional domains including: Eps15 homology domains, SH3 domains, a RhoGEF domain, and a PH domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. The members here have topology I.


Pssm-ID: 176021 [Multi-domain]  Cd Length: 136  Bit Score: 48.15  E-value: 7.52e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 160 QLLVGIIQAAELPALDMGGTSDPYVKVFLlpdKKKKYETKVHRKTLNPVFNEQFTFKVpySELGGKTLVMAVYDFDRFSK 239
Cdd:cd08375    16 RLMVVIVEGRDLKPCNSNGKSDPYCEVSM---GSQEHKTKVVSDTLNPKWNSSMQFFV--KDLEQDVLCITVFDRDFFSP 90
                          90
                  ....*....|..
gi 2125461122 240 HDIIG--EYKVA 249
Cdd:cd08375    91 DDFLGrtEIRVA 102
C2_RGS-like cd08685
C2 domain of the Regulator Of G-Protein Signaling (RGS) family; This CD contains members of ...
149-217 8.22e-07

C2 domain of the Regulator Of G-Protein Signaling (RGS) family; This CD contains members of the regulator of G-protein signaling (RGS) family. RGS is a GTPase activating protein which inhibits G-protein mediated signal transduction. The protein is largely cytosolic, but G-protein activation leads to translocation of this protein to the plasma membrane. A nuclear form of this protein has also been described, but its sequence has not been identified. There are multiple alternatively spliced transcript variants in this family with some members having additional domains (ex. PDZ and RGS) downstream of the C2 domain. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176067 [Multi-domain]  Cd Length: 119  Bit Score: 47.45  E-value: 8.22e-07
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 2125461122 149 QYSLDYDFQNNQLLVGIIQAAELPALDmGGTSDPYVKVFLLPDKKKKYE--TKVHRKTLNPVFNEQFTFKV 217
Cdd:cd08685     2 QLKLSIEGQNRKLTLHVLEAKGLRSTN-SGTCNSYVKISLSPDKEVRFRqkTSTVPDSANPLFHETFSFDV 71
C2A_Copine cd04048
C2 domain first repeat in Copine; There are 2 copies of the C2 domain present in copine, a ...
295-381 9.01e-07

C2 domain first repeat in Copine; There are 2 copies of the C2 domain present in copine, a protein involved in membrane trafficking, protein-protein interactions, and perhaps even cell division and growth. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176013 [Multi-domain]  Cd Length: 120  Bit Score: 47.56  E-value: 9.01e-07
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 295 VILEAKNLKKMDVGGLSDPYVKIHLMQNGKRLKKKKTT--IKKNTLNPYYNESFSFEVPFEQIQKVQIVVTVLD--YDKI 370
Cdd:cd04048     5 LSISCRNLLDKDVLSKSDPFVVVYVKTGGSGQWVEIGRteVIKNNLNPDFVTTFTVDYYFEEVQKLRFEVYDVDskSKDL 84
                          90
                  ....*....|.
gi 2125461122 371 GKNDAIGKVFV 381
Cdd:cd04048    85 SDHDFLGEAEC 95
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
289-378 1.42e-06

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 50.91  E-value: 1.42e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  289 AGKLTVVILEAKNLKKMDVGGLSDPYVKIHLmqNGkrLKKKKTTIKKNTLNPYYNESFSFEVPFEqiQKVQIVVTVLDYD 368
Cdd:COG5038   1039 SGYLTIMLRSGENLPSSDENGYSDPFVKLFL--NE--KSVYKTKVVKKTLNPVWNEEFTIEVLNR--VKDVLTINVNDWD 1112
                           90
                   ....*....|
gi 2125461122  369 KIGKNDAIGK 378
Cdd:COG5038   1113 SGEKNDLLGT 1122
C2C_Tricalbin-like cd04045
C2 domain third repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
165-248 1.43e-06

C2 domain third repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 176010 [Multi-domain]  Cd Length: 120  Bit Score: 46.81  E-value: 1.43e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPALDMGGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEqfTFKVPYSELgGKTLVMAVYDFDRFSKHDIIG 244
Cdd:cd04045     7 IRKANDLKNLEGVGKIDPYVRVLV--NGIVKGRTVTISNTLNPVWDE--VLYVPVTSP-NQKITLEVMDYEKVGKDRSLG 81

                  ....
gi 2125461122 245 EYKV 248
Cdd:cd04045    82 SVEI 85
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
177-289 2.33e-06

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 50.14  E-value: 2.33e-06
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  177 GGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEqfTFKVPYSELGGKtLVMAVYDFDRFSKHDIIGEYKVAMNTVDFG 256
Cdd:COG5038    456 NGTVDPYITVTF--SDRVIGKTRVKKNTLNPVWNE--TFYILLNSFTDP-LNLSLYDFNSFKSDKVVGSTQLDLALLHQN 530
                           90       100       110
                   ....*....|....*....|....*....|...
gi 2125461122  257 HVTeewRDLQSAEKEEQEKLGDICFSLRYVPTA 289
Cdd:COG5038    531 PVK---KNELYEFLRNTKNVGRLTYDLRFFPVI 560
C2B_Copine cd04047
C2 domain second repeat in Copine; There are 2 copies of the C2 domain present in copine, a ...
297-379 3.28e-06

C2 domain second repeat in Copine; There are 2 copies of the C2 domain present in copine, a protein involved in membrane trafficking, protein-protein interactions, and perhaps even cell division and growth. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176012 [Multi-domain]  Cd Length: 110  Bit Score: 45.63  E-value: 3.28e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 297 LEAKNLKKMDVGGLSDPYVKIHLM-QNGKRLKKKKTTIKKNTLNPYYNEsfsFEVPFEQI----QKVQIVVTVLDYDKIG 371
Cdd:cd04047     7 FSGKKLDKKDFFGKSDPFLEISRQsEDGTWVLVYRTEVIKNTLNPVWKP---FTIPLQKLcngdYDRPIKIEVYDYDSSG 83

                  ....*...
gi 2125461122 372 KNDAIGKV 379
Cdd:cd04047    84 KHDLIGEF 91
C2_Rab11-FIP_classI cd08682
C2 domain found in Rab11-family interacting proteins (FIP) class I; Rab GTPases recruit ...
163-267 3.90e-06

C2 domain found in Rab11-family interacting proteins (FIP) class I; Rab GTPases recruit various effector proteins to organelles and vesicles. Rab11-family interacting proteins (FIPs) are involved in mediating the role of Rab11. FIPs can be divided into three classes: class I FIPs (Rip11a, Rip11b, RCP, and FIP2) which contain a C2 domain after N-terminus of the protein, class II FIPs (FIP3 and FIP4) which contain two EF-hands and a proline rich region, and class III FIPs (FIP1) which exhibits no homology to known protein domains. All FIP proteins contain a highly conserved, 20-amino acid motif at the C-terminus of the protein, known as Rab11/25 binding domain (RBD). Class I FIPs are thought to bind to endocytic membranes via their C2 domain, which interacts directly with phospholipids. Class II FIPs do not have any membrane binding domains leaving much to speculate about the mechanism involving FIP3 and FIP4 interactions with endocytic membranes. The members in this CD are class I FIPs. The exact function of the Rab11 and FIP interaction is unknown, but there is speculation that it involves the role of forming a targeting complex that recruits a group of proteins involved in membrane transport to organelles. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176064 [Multi-domain]  Cd Length: 126  Bit Score: 45.91  E-value: 3.90e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 163 VGIIQAAELPALDMGGTSDPYVKVFLlpdKKKKYETKVHRKTLNPVFNEQFTFKVP--YSELGGK-TLVMAVYDFDRFSK 239
Cdd:cd08682     3 VTVLQARGLLCKGKSGTNDAYVIIQL---GKEKYSTSVKEKTTSPVWKEECSFELPglLSGNGNRaTLQLTVMHRNLLGL 79
                          90       100       110
                  ....*....|....*....|....*....|
gi 2125461122 240 HDIIGEYKVAMNTVDFGHVTE--EWRDLQS 267
Cdd:cd08682    80 DKFLGQVSIPLNDLDEDKGRRrtRWFKLES 109
C2A_Ferlin cd08373
C2 domain first repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
165-249 4.19e-06

C2 domain first repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 176019 [Multi-domain]  Cd Length: 127  Bit Score: 45.71  E-value: 4.19e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPALdmGGTSDPYVKVFLLPDKKKkyeTKVHRKTLNPVFNEQFTFKVPYSELGGKTLVMAVYDFDRFSKHDIIG 244
Cdd:cd08373     2 VVSLKNLPGL--KGKGDRIAKVTFRGVKKK---TRVLENELNPVWNETFEWPLAGSPDPDESLEIVVKDYEKVGRNRLIG 76

                  ....*
gi 2125461122 245 EYKVA 249
Cdd:cd08373    77 SATVS 81
C2B_RIM1alpha cd04028
C2 domain second repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are ...
276-382 4.99e-06

C2 domain second repeat contained in Rab3-interacting molecule (RIM) proteins; RIMs are believed to organize specialized sites of the plasma membrane called active zones. They also play a role in controlling neurotransmitter release, plasticity processes, as well as memory and learning. RIM contains an N-terminal zinc finger domain, a PDZ domain, and two C-terminal C2 domains (C2A, C2B). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology and do not bind Ca2+.


Pssm-ID: 175994 [Multi-domain]  Cd Length: 146  Bit Score: 45.84  E-value: 4.99e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 276 LGDICFSLRYvpTAGKLTVVILEAKNL-KKMDVGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFevpFEQ 354
Cdd:cd04028    17 MGDIQLGLYD--KKGQLEVEVIRARGLvQKPGSKVLPAPYVKVYLLEGKKCIAKKKTKIARKTLDPLYQQQLVF---DVS 91
                          90       100
                  ....*....|....*....|....*....
gi 2125461122 355 IQKVQIVVTVL-DYDKIGKndaigKVFVG 382
Cdd:cd04028    92 PTGKTLQVIVWgDYGRMDK-----KVFMG 115
C2_fungal_Inn1p-like cd08681
C2 domain found in fungal Ingression 1 (Inn1) proteins; Saccharomyces cerevisiae Inn1 ...
161-271 5.26e-06

C2 domain found in fungal Ingression 1 (Inn1) proteins; Saccharomyces cerevisiae Inn1 associates with the contractile actomyosin ring at the end of mitosis and is needed for cytokinesis. The C2 domain of Inn1, located at the N-terminus, is required for ingression of the plasma membrane. The C-terminus is relatively unstructured and contains eight PXXP motifs that are thought to mediate interaction of Inn1 with other proteins with SH3 domains in the cytokinesis proteins Hof1 (an F-BAR protein) and Cyk3 (whose overexpression can restore primary septum formation in Inn1Delta cells) as well as recruiting Inn1 to the bud-neck by binding to Cyk3. Inn1 and Cyk3 appear to cooperate in activating chitin synthase Chs2 for primary septum formation, which allows coordination of actomyosin ring contraction with ingression of the cleavage furrow. It is thought that the C2 domain of Inn1 helps to preserve the link between the actomyosin ring and the plasma membrane, contributing both to membrane ingression, as well as to stability of the contracting ring. Additionally, Inn1 might induce curvature of the plasma membrane adjacent to the contracting ring, thereby promoting ingression of the membrane. It has been shown that the C2 domain of human synaptotagmin induces curvature in target membranes and thereby contributes to fusion of these membranes with synaptic vesicles. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176063 [Multi-domain]  Cd Length: 118  Bit Score: 45.32  E-value: 5.26e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKkyeTKV-HRKTLNPVFNEQFTFKVpySELGGKTLVMAVYDfDRFSK 239
Cdd:cd08681     3 LVVVVLKARNLPNKRKLDKQDPYCVLRIGGVTKK---TKTdFRGGQHPEWDEELRFEI--TEDKKPILKVAVFD-DDKRK 76
                          90       100       110
                  ....*....|....*....|....*....|..
gi 2125461122 240 HDIIGEYKVAMNTVDFGHVTEEWRDLQSAEKE 271
Cdd:cd08681    77 PDLIGDTEVDLSPALKEGEFDDWYELTLKGRY 108
C2B_Tricalbin-like cd04052
C2 domain second repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
175-270 6.32e-06

C2 domain second repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176017 [Multi-domain]  Cd Length: 111  Bit Score: 44.90  E-value: 6.32e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 175 DMGGTSDPYVKVFLlpDKKKKYETKVHRKTLNPVFNEQFTFKVPysELGGKTLVMAVYDfDRFSKHDIIGEYKVAMNTV- 253
Cdd:cd04052     8 SKTGLLSPYAELYL--NGKLVYTTRVKKKTNNPSWNASTEFLVT--DRRKSRVTVVVKD-DRDRHDPVLGSVSISLNDLi 82
                          90
                  ....*....|....*..
gi 2125461122 254 DFGHVTEEWRDLQSAEK 270
Cdd:cd04052    83 DATSVGQQWFPLSGNGQ 99
C2A_MCTP_PRT_plant cd04022
C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
161-253 7.70e-06

C2 domain first repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-II topology.


Pssm-ID: 175989 [Multi-domain]  Cd Length: 127  Bit Score: 45.02  E-value: 7.70e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKkyeTKVHRKTLNPVFNEQFTFKVP-YSELGGKTLVMAVYDFDRFS- 238
Cdd:cd04022     2 LVVEVVDAQDLMPKDGQGSSSAYVELDFDGQKKR---TRTKPKDLNPVWNEKLVFNVSdPSRLSNLVLEVYVYNDRRSGr 78
                          90
                  ....*....|....*
gi 2125461122 239 KHDIIGEYKVAMNTV 253
Cdd:cd04022    79 RRSFLGRVRISGTSF 93
C2_Calpain cd04046
C2 domain present in Calpain proteins; A single C2 domain is found in calpains (EC 3.4.22.52, ...
163-215 8.01e-06

C2 domain present in Calpain proteins; A single C2 domain is found in calpains (EC 3.4.22.52, EC 3.4.22.53), calcium-dependent, non-lysosomal cysteine proteases. Caplains are classified as belonging to Clan CA by MEROPS and include six families: C1, C2, C10, C12, C28, and C47. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176011 [Multi-domain]  Cd Length: 126  Bit Score: 44.96  E-value: 8.01e-06
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 2125461122 163 VGIIQAAELPALDMGGTSDPYVkvfLLPDKKKKYETKVHRKTLNPVFNEQFTF 215
Cdd:cd04046     7 VHVHSAEGLSKQDSGGGADPYV---IIKCEGESVRSPVQKDTLSPEFDTQAIF 56
C2_cPLA2 cd04036
C2 domain present in cytosolic PhosphoLipase A2 (cPLA2); A single copy of the C2 domain is ...
160-218 8.38e-06

C2 domain present in cytosolic PhosphoLipase A2 (cPLA2); A single copy of the C2 domain is present in cPLA2 which releases arachidonic acid from membranes initiating the biosynthesis of potent inflammatory mediators such as prostaglandins, leukotrienes, and platelet-activating factor. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members of this cd have a type-II topology.


Pssm-ID: 176001 [Multi-domain]  Cd Length: 119  Bit Score: 44.56  E-value: 8.38e-06
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 2125461122 160 QLLVGIIQAAELPALDMGGTSDPYVKVFL--LPDKKKKyeTKVHRKTLNPVFNEQFTFKVP 218
Cdd:cd04036     1 LLTVRVLRATNITKGDLLSTPDCYVELWLptASDEKKR--TKTIKNSINPVWNETFEFRIQ 59
C2B_PI3K_class_II cd08381
C2 domain second repeat present in class II phosphatidylinositol 3-kinases (PI3Ks); There are ...
277-410 9.70e-06

C2 domain second repeat present in class II phosphatidylinositol 3-kinases (PI3Ks); There are 3 classes of PI3Ks based on structure, regulation, and specificity. All classes contain a N-terminal C2 domain, a PIK domain, and a kinase catalytic domain. Unlike class I and class III, class II PI3Ks have additionally a PX domain and a C-terminal C2 domain containing a nuclear localization signal both of which bind phospholipids though in a slightly different fashion. PI3Ks (AKA phosphatidylinositol (PtdIns) 3-kinases) regulate cell processes such as cell growth, differentiation, proliferation, and motility. PI3Ks work on phosphorylation of phosphatidylinositol, phosphatidylinositide (4)P (PtdIns (4)P),2 or PtdIns(4,5)P2. Specifically they phosphorylate the D3 hydroxyl group of phosphoinositol lipids on the inositol ring. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176027 [Multi-domain]  Cd Length: 122  Bit Score: 44.59  E-value: 9.70e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 277 GDICFSLRYvpTAGKLTVVILEAKNLKKMDvGGLSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFE-VPFEQI 355
Cdd:cd08381     2 GQVKLSISY--KNGTLFVMVMHAKNLPLLD-GSDPDPYVKTYLLPDPQKTTKRKTKVVRKTRNPTFNEMLVYDgLPVEDL 78
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 2125461122 356 QKVQIVVTVLDYDKIGKNDAIGKVFVgynstgaELRhwsDMlaNPRRPIAQWHTL 410
Cdd:cd08381    79 QQRVLQVSVWSHDSLVENEFLGGVCI-------PLK---KL--DLSQETEKWYPL 121
C2A_Rasal1_RasA4 cd04054
C2 domain first repeat present in RasA1 and RasA4; Rasal1 and RasA4 are both members of GAP1 ...
292-416 1.02e-05

C2 domain first repeat present in RasA1 and RasA4; Rasal1 and RasA4 are both members of GAP1 (GTPase activating protein 1). Rasal1 responds to repetitive Ca2+ signals by associating with the plasma membrane and deactivating Ras. RasA4 suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. Both of these proteins contains two C2 domains, a Ras-GAP domain, a plextrin homology (PH)-like domain, and a Bruton's Tyrosine Kinase (BTK) zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176018 [Multi-domain]  Cd Length: 121  Bit Score: 44.43  E-value: 1.02e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKKMDVGGLSDPY--VKIhlmqngKRLKKKKTTIKKNTLNPYYNESFSFEVP--FEQIQkvqivVTVLDY 367
Cdd:cd04054     2 LYIRIVEGKNLPAKDITGSSDPYciVKV------DNEVIIRTATVWKTLNPFWGEEYTVHLPpgFHTVS-----FYVLDE 70
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|..
gi 2125461122 368 DKIGKNDAIGKVFVGynstgaelrhwSDMLANPRRPIAQWHTL---QPEEEV 416
Cdd:cd04054    71 DTLSRDDVIGKVSLT-----------REVISAHPRGIDGWMNLtevDPDEEV 111
C2_PSD cd04039
C2 domain present in Phosphatidylserine decarboxylase (PSD); PSD is involved in the ...
338-381 2.08e-05

C2 domain present in Phosphatidylserine decarboxylase (PSD); PSD is involved in the biosynthesis of aminophospholipid by converting phosphatidylserine (PtdSer) to phosphatidylethanolamine (PtdEtn). There is a single C2 domain present and it is thought to confer PtdSer binding motif that is common to PKC and synaptotagmin. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176004 [Multi-domain]  Cd Length: 108  Bit Score: 43.40  E-value: 2.08e-05
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*
gi 2125461122 338 LNPYYNESFSFEV-PFEqiQKVQIVVTVLDYDKIGKNDAIGKVFV 381
Cdd:cd04039    48 LNPVFNERLAFEVyPHE--KNFDIQFKVLDKDKFSFNDYVATGSL 90
C2B_Ferlin cd04011
C2 domain second repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
294-383 3.13e-05

C2 domain second repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 175978 [Multi-domain]  Cd Length: 111  Bit Score: 42.95  E-value: 3.13e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 294 VVILEAKNLkkmdVGGLSDPYVKIHLM--------QNGKrlkkkkttikkntLNPYYNESFSFEV--PFEQIQKVQIVVT 363
Cdd:cd04011     8 VRVIEARQL----VGGNIDPVVKVEVGgqkkytsvKKGT-------------NCPFYNEYFFFNFheSPDELFDKIIKIS 70
                          90       100
                  ....*....|....*....|..
gi 2125461122 364 VLDYDKIGKNDAIG--KVFVGY 383
Cdd:cd04011    71 VYDSRSLRSDTLIGsfKLDVGT 92
C2_C21orf25-like cd08678
C2 domain found in the Human chromosome 21 open reading frame 25 (C21orf25) protein; The ...
161-279 3.43e-05

C2 domain found in the Human chromosome 21 open reading frame 25 (C21orf25) protein; The members in this cd are named after the Human C21orf25 which contains a single C2 domain. Several other members contain a C1 domain downstream of the C2 domain. No other information on this protein is currently known. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176060 [Multi-domain]  Cd Length: 126  Bit Score: 43.12  E-value: 3.43e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELpaLDMGGTSDPYVkVFLLPDKKKKYETKVHRKTLNPVFNEQFTFkvpysELGGKT--LVMAVYDFDRFS 238
Cdd:cd08678     1 LLVKNIKANGL--SEAAGSSNPYC-VLEMDEPPQKYQSSTQKNTSNPFWDEHFLF-----ELSPNSkeLLFEVYDNGKKS 72
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|.
gi 2125461122 239 KHDIIGEYKVAMNTVDFGHVTEEWRDLQSAEKEEQEKLGDI 279
Cdd:cd08678    73 DSKFLGLAIVPFDELRKNPSGRQIFPLQGRPYEGDSVSGSI 113
C2A_C2C_Synaptotagmin_like cd08391
C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a ...
290-379 3.51e-05

C2 domain first and third repeat in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains either the first or third repeat in Synaptotagmin-like proteins with a type-I topology.


Pssm-ID: 176037 [Multi-domain]  Cd Length: 121  Bit Score: 43.05  E-value: 3.51e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 290 GKLTVVILEAKNLKKMD------VGGLSDPYVKIHLmqngkRLKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKVQIVVt 363
Cdd:cd08391     1 GVLRIHVIEAQDLVAKDkfvgglVKGKSDPYVIVRV-----GAQTFKSKVIKENLNPKWNEVYEAVVDEVPGQELEIEL- 74
                          90
                  ....*....|....*..
gi 2125461122 364 vldYDK-IGKNDAIGKV 379
Cdd:cd08391    75 ---FDEdPDKDDFLGRL 88
C2A_RasGAP cd08383
C2 domain (first repeat) of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras ...
292-379 3.53e-05

C2 domain (first repeat) of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. The proteins here all contain either a single C2 domain or two tandem C2 domains, a Ras-GAP domain, and a pleckstrin homology (PH)-like domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 176029 [Multi-domain]  Cd Length: 117  Bit Score: 43.02  E-value: 3.53e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKkmdVGGLSDPYVKIHLMQngkrlKKKKTTIKKNTLNPYYNESFSFEVPFEQIQKVQIVVTVLDYDKIG 371
Cdd:cd08383     2 LRLRILEAKNLP---SKGTRDPYCTVSLDQ-----VEVARTKTVEKLNPFWGEEFVFDDPPPDVTFFTLSFYNKDKRSKD 73

                  ....*...
gi 2125461122 372 KNDAIGKV 379
Cdd:cd08383    74 RDIVIGKV 81
C2_RGS-like cd08685
C2 domain of the Regulator Of G-Protein Signaling (RGS) family; This CD contains members of ...
273-364 4.40e-05

C2 domain of the Regulator Of G-Protein Signaling (RGS) family; This CD contains members of the regulator of G-protein signaling (RGS) family. RGS is a GTPase activating protein which inhibits G-protein mediated signal transduction. The protein is largely cytosolic, but G-protein activation leads to translocation of this protein to the plasma membrane. A nuclear form of this protein has also been described, but its sequence has not been identified. There are multiple alternatively spliced transcript variants in this family with some members having additional domains (ex. PDZ and RGS) downstream of the C2 domain. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176067 [Multi-domain]  Cd Length: 119  Bit Score: 42.83  E-value: 4.40e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 273 QEKLgDICFslryvpTAGKLTVVILEAKNLKKMDVGGlSDPYVKIHLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPF 352
Cdd:cd08685     2 QLKL-SIEG------QNRKLTLHVLEAKGLRSTNSGT-CNSYVKISLSPDKEVRFRQKTSTVPDSANPLFHETFSFDVNE 73
                          90
                  ....*....|..
gi 2125461122 353 EQIQKvQIVVTV 364
Cdd:cd08685    74 RDYQK-RLLVTV 84
C2B_Munc13 cd04027
C2 domain second repeat in Munc13 (mammalian uncoordinated) proteins; C2-like domains are ...
160-216 7.16e-05

C2 domain second repeat in Munc13 (mammalian uncoordinated) proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 175993 [Multi-domain]  Cd Length: 127  Bit Score: 42.17  E-value: 7.16e-05
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*..
gi 2125461122 160 QLLVGIIQAAELPALDMGGTSDPYVKVFLlpdKKKKYETKVHRKTLNPVFNEQFTFK 216
Cdd:cd04027     2 KISITVVCAQGLIAKDKTGTSDPYVTVQV---GKTKKRTKTIPQNLNPVWNEKFHFE 55
C2_cPLA2 cd04036
C2 domain present in cytosolic PhosphoLipase A2 (cPLA2); A single copy of the C2 domain is ...
292-380 8.63e-05

C2 domain present in cytosolic PhosphoLipase A2 (cPLA2); A single copy of the C2 domain is present in cPLA2 which releases arachidonic acid from membranes initiating the biosynthesis of potent inflammatory mediators such as prostaglandins, leukotrienes, and platelet-activating factor. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members of this cd have a type-II topology.


Pssm-ID: 176001 [Multi-domain]  Cd Length: 119  Bit Score: 41.86  E-value: 8.63e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKKMDVGGLSDPYVKIHL------------MQNGKrlkkkkttikkntlNPYYNESFSFevpfeQIQ-KV 358
Cdd:cd04036     2 LTVRVLRATNITKGDLLSTPDCYVELWLptasdekkrtktIKNSI--------------NPVWNETFEF-----RIQsQV 62
                          90       100
                  ....*....|....*....|....
gi 2125461122 359 QIV--VTVLDYDKIgKNDAIGKVF 380
Cdd:cd04036    63 KNVleLTVMDEDYV-MDDHLGTVL 85
C2B_RasGAP cd08675
C2 domain second repeat of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras ...
292-379 1.04e-04

C2 domain second repeat of Ras GTPase activating proteins (GAPs); RasGAPs suppress Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. The proteins here all contain two tandem C2 domains, a Ras-GAP domain, and a pleckstrin homology (PH)-like domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 176057 [Multi-domain]  Cd Length: 137  Bit Score: 41.97  E-value: 1.04e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNLKKMdVGGLSDPYVKIHLMqNGKRLKKKKTTIKKNTLNPYYNESFSFEVPF-------------EQIQKV 358
Cdd:cd08675     1 LSVRVLECRDLALK-SNGTCDPFARVTLN-YSSKTDTKRTKVKKKTNNPRFDEAFYFELTIgfsyekksfkveeEDLEKS 78
                          90       100
                  ....*....|....*....|.
gi 2125461122 359 QIVVTVLDYDKIGKNDAIGKV 379
Cdd:cd08675    79 ELRVELWHASMVSGDDFLGEV 99
C2C_MCTP_PRT cd08377
C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
290-379 1.19e-04

C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); MCTPs are involved in Ca2+ signaling at the membrane. The cds in this family contain multiple C2 domains as well as a C-terminal PRT domain. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 176023 [Multi-domain]  Cd Length: 119  Bit Score: 41.52  E-value: 1.19e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 290 GKLTVVILEAKNLKKMDVGGLSDPYVKIHLmqngkRLKKKKTTIKKNTLNPYYNESFSFevPFEQIQKVqIVVTVLDYDK 369
Cdd:cd08377     1 GFLQVKVIRASGLAAADIGGKSDPFCVLEL-----VNARLQTHTIYKTLNPEWNKIFTF--PIKDIHDV-LEVTVYDEDK 72
                          90
                  ....*....|
gi 2125461122 370 IGKNDAIGKV 379
Cdd:cd08377    73 DKKPEFLGKV 82
C2B_Synaptotagmin-like cd04050
C2 domain second repeat present in Synaptotagmin-like proteins; Synaptotagmin is a ...
161-236 1.63e-04

C2 domain second repeat present in Synaptotagmin-like proteins; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176015 [Multi-domain]  Cd Length: 105  Bit Score: 40.63  E-value: 1.63e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLlpdKKKKYETKVHRKTLNPVFNEQFTFKVPYSELGgkTLVMAVYDFDR 236
Cdd:cd04050     2 LFVYLDSAKNLPLAKSTKEPSPYVELTV---GKTTQKSKVKERTNNPVWEEGFTFLVRNPENQ--ELEIEVKDDKT 72
C2C_Ferlin cd04018
C2 domain third repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and ...
165-246 1.77e-04

C2 domain third repeat in Ferlin; Ferlins are involved in vesicle fusion events. Ferlins and other proteins, such as Synaptotagmins, are implicated in facilitating the fusion process when cell membranes fuse together. There are six known human Ferlins: Dysferlin (Fer1L1), Otoferlin (Fer1L2), Myoferlin (Fer1L3), Fer1L4, Fer1L5, and Fer1L6. Defects in these genes can lead to a wide range of diseases including muscular dystrophy (dysferlin), deafness (otoferlin), and infertility (fer-1, fertilization factor-1). Structurally they have 6 tandem C2 domains, designated as (C2A-C2F) and a single C-terminal transmembrane domain, though there is a new study that disputes this and claims that there are actually 7 tandem C2 domains with another C2 domain inserted between C2D and C2E. In a subset of them (Dysferlin, Myoferlin, and Fer1) there is an additional conserved domain called DysF. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175985 [Multi-domain]  Cd Length: 151  Bit Score: 41.46  E-value: 1.77e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 165 IIQAAELPALD---MGGT-----------SDPYVKVFLLpdkKKKYETKVHRKTLNPVFNEQFTFKVPYSELgGKTLVMA 230
Cdd:cd04018     6 IYRAEDLPQMDsgiMANVkkaflgekkelVDPYVEVSFA---GQKVKTSVKKNSYNPEWNEQIVFPEMFPPL-CERIKIQ 81
                          90
                  ....*....|....*.
gi 2125461122 231 VYDFDRFSKHDIIGEY 246
Cdd:cd04018    82 IRDWDRVGNDDVIGTH 97
C2_Ras_p21A1 cd08400
C2 domain present in RAS p21 protein activator 1 (RasA1); RasA1 is a GAP1 (GTPase activating ...
161-286 2.10e-04

C2 domain present in RAS p21 protein activator 1 (RasA1); RasA1 is a GAP1 (GTPase activating protein 1), a Ras-specific GAP member, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. RasA1 contains a C2 domain, a Ras-GAP domain, a pleckstrin homology (PH)-like domain, a SH3 domain, and 2 SH2 domains. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have a type-I topology.


Pssm-ID: 176045 [Multi-domain]  Cd Length: 126  Bit Score: 40.81  E-value: 2.10e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPaldMGGTSDPYVKVFLlpDKKKKYETKVhRKTLNPVFNEQFTFKVPYSELGGKTLvmAVYDFDRFSKH 240
Cdd:cd08400     6 LQLNVLEAHKLP---VKHVPHPYCVISL--NEVKVARTKV-REGPNPVWSEEFVFDDLPPDVNSFTI--SLSNKAKRSKD 77
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 2125461122 241 DIIGEYKVAMNTVDFGHVTEEWRDLQSAEKEEQEKLGDICFSLRYV 286
Cdd:cd08400    78 SEIAEVTVQLSKLQNGQETDEWYPLSSASPLKGGEWGSLRIRARYS 123
C2_Munc13_fungal cd04043
C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are ...
293-381 2.61e-04

C2 domain in Munc13 (mammalian uncoordinated) proteins; fungal group; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176008 [Multi-domain]  Cd Length: 126  Bit Score: 40.71  E-value: 2.61e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 293 TVVILEAKNLKKMDVGGLSDPYVKihLMQNGKRLKKKKTTIKKNTLNPYYNESFSFEVPFEqiQKVQIVVTVLDYDKIGK 372
Cdd:cd04043     4 TIRIVRAENLKADSSNGLSDPYVT--LVDTNGKRRIAKTRTIYDTLNPRWDEEFELEVPAG--EPLWISATVWDRSFVGK 79

                  ....*....
gi 2125461122 373 NDAIGKVFV 381
Cdd:cd04043    80 HDLCGRASL 88
C2A_Munc13-like cd08676
C2 domain first repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are ...
161-217 2.79e-04

C2 domain first repeat in Munc13 (mammalian uncoordinated)-like proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-II topology.


Pssm-ID: 176058 [Multi-domain]  Cd Length: 153  Bit Score: 41.20  E-value: 2.79e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLLPD--------------KKKK------------YETKVHRKTLNPVFNEQFT 214
Cdd:cd08676    30 LKVTVIEAKGLLAKDVNGFSDPYCMLGIVPAsrernsekskkrksHRKKavlkdtvpaksiKVTEVKPQTLNPVWNETFR 109

                  ...
gi 2125461122 215 FKV 217
Cdd:cd08676   110 FEV 112
C2_putative_Elicitor-responsive_gene cd04049
C2 domain present in the putative elicitor-responsive gene; In plants elicitor-responsive ...
290-379 4.31e-04

C2 domain present in the putative elicitor-responsive gene; In plants elicitor-responsive proteins are triggered in response to specific elicitor molecules such as glycolproteins, peptides, carbohydrates and lipids. A host of defensive responses are also triggered resulting in localized cell death. Antimicrobial secondary metabolites, such as phytoalexins, or defense-related proteins, including pathogenesis-related (PR) proteins are also produced. There is a single C2 domain present here. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members have a type-II topology.


Pssm-ID: 176014 [Multi-domain]  Cd Length: 124  Bit Score: 40.01  E-value: 4.31e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 290 GKLTVVILEAKNLKKMDVGGLSDPYVKIHL--------MQNGKRLkkkkttikkntlNPYYNESFSFEVPFEQIQKV-QI 360
Cdd:cd04049     1 GTLEVLLISAKGLQDTDFLGKIDPYVIIQCrtqerkskVAKGDGR------------NPEWNEKFKFTVEYPGWGGDtKL 68
                          90
                  ....*....|....*....
gi 2125461122 361 VVTVLDYDKIGKNDAIGKV 379
Cdd:cd04049    69 ILRIMDKDNFSDDDFIGEA 87
C2C_MCTP_PRT_plant cd04019
C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
161-278 4.93e-04

C2 domain third repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 175986 [Multi-domain]  Cd Length: 150  Bit Score: 40.34  E-value: 4.93e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPALDMGGTSDPYVKVFLLPDKKKkyeTKV-HRKTLNPVFNEQFTFKV--PYSElggkTLVMAVYDFDRF 237
Cdd:cd04019     2 LRVTVIEAQDLVPSDKNRVPEVFVKAQLGNQVLR---TRPsQTRNGNPSWNEELMFVAaePFED----HLILSVEDRVGP 74
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*
gi 2125461122 238 SKHDIIGEYKVAMNTV----DFGHVTEEWRDLQSAEKEEQEKLGD 278
Cdd:cd04019    75 NKDEPLGRAVIPLNDIerrvDDRPVPSRWFSLERPGGAMEQKKKR 119
C2_Intersectin cd08375
C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally ...
290-378 6.89e-04

C2 domain present in Intersectin; A single instance of the C2 domain is located C terminally in the intersectin protein. Intersectin functions as a scaffolding protein, providing a link between the actin cytoskeleton and the components of endocytosis and plays a role in signal transduction. In addition to C2, intersectin contains several additional domains including: Eps15 homology domains, SH3 domains, a RhoGEF domain, and a PH domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. The members here have topology I.


Pssm-ID: 176021 [Multi-domain]  Cd Length: 136  Bit Score: 39.68  E-value: 6.89e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 290 GKLTVVILEAKNLKKMDVGGLSDPYVKIHLmqngkRLKKKKTTIKKNTLNPYYNESFSFEVpfEQIQKVQIVVTVLDYDK 369
Cdd:cd08375    15 GRLMVVIVEGRDLKPCNSNGKSDPYCEVSM-----GSQEHKTKVVSDTLNPKWNSSMQFFV--KDLEQDVLCITVFDRDF 87

                  ....*....
gi 2125461122 370 IGKNDAIGK 378
Cdd:cd08375    88 FSPDDFLGR 96
C2C_Munc13 cd08395
C2 domain third repeat in Munc13 (mammalian uncoordinated) proteins; C2-like domains are ...
178-215 8.54e-04

C2 domain third repeat in Munc13 (mammalian uncoordinated) proteins; C2-like domains are thought to be involved in phospholipid binding in a Ca2+ independent manner in both Unc13 and Munc13. Caenorabditis elegans Unc13 has a central domain with sequence similarity to PKC, which includes C1 and C2-related domains. Unc13 binds phorbol esters and DAG with high affinity in a phospholipid manner. Mutations in Unc13 results in abnormal neuronal connections and impairment in cholinergic neurotransmission in the nematode. Munc13 is the mammalian homolog which are expressed in the brain. There are 3 isoforms (Munc13-1, -2, -3) and are thought to play a role in neurotransmitter release and are hypothesized to be high-affinity receptors for phorbol esters. Unc13 and Munc13 contain both C1 and C2 domains. There are two C2 related domains present, one central and one at the carboxyl end. Munc13-1 contains a third C2-like domain. Munc13 interacts with syntaxin, synaptobrevin, and synaptotagmin suggesting a role for these as scaffolding proteins.C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 176041 [Multi-domain]  Cd Length: 120  Bit Score: 38.92  E-value: 8.54e-04
                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 2125461122 178 GTSDPYVKVFL----LPDKKKKYETKVHRKTLNPVFNEQFTF 215
Cdd:cd08395    18 GMFRPFVEVNLigphLSDKKRKFATKSKNNNWSPKYNETFQF 59
C2_ArfGAP cd04038
C2 domain present in Arf GTPase Activating Proteins (GAP); ArfGAP is a GTPase activating ...
290-382 9.07e-04

C2 domain present in Arf GTPase Activating Proteins (GAP); ArfGAP is a GTPase activating protein which regulates the ADP ribosylation factor Arf, a member of the Ras superfamily of GTP-binding proteins. The GTP-bound form of Arf is involved in Golgi morphology and is involved in recruiting coat proteins. ArfGAP is responsible for the GDP-bound form of Arf which is necessary for uncoating the membrane and allowing the Golgi to fuse with an acceptor compartment. These proteins contain an N-terminal ArfGAP domain containing the characteristic zinc finger motif (Cys-x2-Cys-x(16,17)-x2-Cys) and C-terminal C2 domain. C2 domains were first identified in Protein Kinase C (PKC). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176003 [Multi-domain]  Cd Length: 145  Bit Score: 39.62  E-value: 9.07e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 290 GKLTVVILEAKNLKKMDVGGlSDPYVKIHLMQngkrlKKKKTTIKKNTLNPYYNESFSFEVPFEQiqkVQIVVTVLDYDK 369
Cdd:cd04038     2 GLLKVRVVRGTNLAVRDFTS-SDPYVVLTLGN-----QKVKTRVIKKNLNPVWNEELTLSVPNPM---APLKLEVFDKDT 72
                          90
                  ....*....|...
gi 2125461122 370 IGKNDAIGKVFVG 382
Cdd:cd04038    73 FSKDDSMGEAEID 85
COG5038 COG5038
Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];
163-379 9.31e-04

Ca2+-dependent lipid-binding protein, contains C2 domain [General function prediction only];


Pssm-ID: 227371 [Multi-domain]  Cd Length: 1227  Bit Score: 41.67  E-value: 9.31e-04
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  163 VGIIQAA--ELPALDMGGTSDPYVKVFLLPDKKKKYETKVHRKTLNPVFNEQFTFKVPysELGGKTLVMAVydFDRFSKH 240
Cdd:COG5038    578 TGILKVTlrEVKALDELSSKKDNKSAELYTNAKEVYSTGKLKFTNHPSWNLQYNVLVT--DRKNSSIKVVT--FDVQSGK 653
                           90       100       110       120       130       140       150       160
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122  241 DIIGEYKVAMNTVDFGHVTEEWRDLQSAEKE--------EQEKLGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSD 312
Cdd:COG5038    654 VIATEGSTLPDLIDRTLDTFLVFPLRNPKGRifitnywkPIYNAGGSSSKTVYDTPIGAIRVSVRKANDLRNEIPGGKSD 733
                          170       180       190       200       210       220
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 2125461122  313 PYVKIHLmqNGkrLKKKKTTIKKNTLNPYYNESFSFEVpfeqIQKVQIVVT-VLDYDKIGKNDAIGKV 379
Cdd:COG5038    734 PYATVLV--NN--LVKYRTIYGSSTLNPIWNEILYVPV----TSKNQRLTLeCMDYEESGDDRNLGEV 793
C2_E3_ubiquitin_ligase cd04021
C2 domain present in E3 ubiquitin ligase; E3 ubiquitin ligase is part of the ubiquitylation ...
181-250 1.44e-03

C2 domain present in E3 ubiquitin ligase; E3 ubiquitin ligase is part of the ubiquitylation mechanism responsible for controlling surface expression of membrane proteins. The sequential action of several enzymes are involved: ubiquitin-activating enzyme E1, ubiquitin-conjugating enzyme E2, and ubiquitin-protein ligase E3 which is responsible for substrate recognition and promoting the transfer of ubiquitin to the target protein. E3 ubiquitin ligase is composed of an N-terminal C2 domain, 4 WW domains, and a HECTc domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 175988 [Multi-domain]  Cd Length: 125  Bit Score: 38.41  E-value: 1.44e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 2125461122 181 DPYVKVflLPDKKKKYETKVHRKTLNPVFNEQFTFKV-PYSELGGKtlvmaVYDFDRFSKHDIIGEYKVAM 250
Cdd:cd04021    23 DPYVEV--TVDGQPPKKTEVSKKTSNPKWNEHFTVLVtPQSTLEFK-----VWSHHTLKADVLLGEASLDL 86
C2_Rab11-FIP_classI cd08682
C2 domain found in Rab11-family interacting proteins (FIP) class I; Rab GTPases recruit ...
294-410 1.44e-03

C2 domain found in Rab11-family interacting proteins (FIP) class I; Rab GTPases recruit various effector proteins to organelles and vesicles. Rab11-family interacting proteins (FIPs) are involved in mediating the role of Rab11. FIPs can be divided into three classes: class I FIPs (Rip11a, Rip11b, RCP, and FIP2) which contain a C2 domain after N-terminus of the protein, class II FIPs (FIP3 and FIP4) which contain two EF-hands and a proline rich region, and class III FIPs (FIP1) which exhibits no homology to known protein domains. All FIP proteins contain a highly conserved, 20-amino acid motif at the C-terminus of the protein, known as Rab11/25 binding domain (RBD). Class I FIPs are thought to bind to endocytic membranes via their C2 domain, which interacts directly with phospholipids. Class II FIPs do not have any membrane binding domains leaving much to speculate about the mechanism involving FIP3 and FIP4 interactions with endocytic membranes. The members in this CD are class I FIPs. The exact function of the Rab11 and FIP interaction is unknown, but there is speculation that it involves the role of forming a targeting complex that recruits a group of proteins involved in membrane transport to organelles. The C2 domain was first identified in PKC. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions.


Pssm-ID: 176064 [Multi-domain]  Cd Length: 126  Bit Score: 38.59  E-value: 1.44e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 294 VVILEAKNLKKMDVGGLSDPYVKIHLMQNgkrlkKKKTTIKKNTLNPYYNESFSFEVP---FEQIQKVQIVVTVLDYDKI 370
Cdd:cd08682     3 VTVLQARGLLCKGKSGTNDAYVIIQLGKE-----KYSTSVKEKTTSPVWKEECSFELPgllSGNGNRATLQLTVMHRNLL 77
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|
gi 2125461122 371 GKNDAIGKVFVGYNstgaelrhwsDMLANPRRPIAQWHTL 410
Cdd:cd08682    78 GLDKFLGQVSIPLN----------DLDEDKGRRRTRWFKL 107
C2D_MCTP_PRT_plant cd08379
C2 domain fourth repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); ...
161-279 1.47e-03

C2 domain fourth repeat found in Multiple C2 domain and Transmembrane region Proteins (MCTP); plant subset; MCTPs are involved in Ca2+ signaling at the membrane. Plant-MCTPs are composed of a variable N-terminal sequence, four C2 domains, two transmembrane regions (TMRs), and a short C-terminal sequence. It is one of four protein classes that are anchored to membranes via a transmembrane region; the others being synaptotagmins, extended synaptotagmins, and ferlins. MCTPs are the only membrane-bound C2 domain proteins that contain two functional TMRs. MCTPs are unique in that they bind Ca2+ but not phospholipids. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the fourth C2 repeat, C2D, and has a type-II topology.


Pssm-ID: 176025 [Multi-domain]  Cd Length: 126  Bit Score: 38.54  E-value: 1.47e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 161 LLVGIIQAAELPAL---DMGGTSDPYVKVFLLPdkkKKYETKVHRKTLNPVFNEQFTFKVpYSELggKTLVMAVYD-FDR 236
Cdd:cd08379     2 LEVGILGAQGLDVLrakDGRGSTDAYCVAKYGP---KWVRTRTVEDSSNPRWNEQYTWPV-YDPC--TVLTVGVFDnSQS 75
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*...
gi 2125461122 237 FSKHDI-----IGEYKVAMNTVDFGHVTEEWRDLQSAEKEEQEKLGDI 279
Cdd:cd08379    76 HWKEAVqpdvlIGKVRIRLSTLEDDRVYAHSYPLLSLNPSGVKKMGEL 123
C2A_RasA2_RasA3 cd08401
C2 domain first repeat present in RasA2 and RasA3; RasA2 and RasA3 are GAP1s (GTPase ...
292-379 1.89e-03

C2 domain first repeat present in RasA2 and RasA3; RasA2 and RasA3 are GAP1s (GTPase activating protein 1s ), Ras-specific GAP members, which suppresses Ras function by enhancing the GTPase activity of Ras proteins resulting in the inactive GDP-bound form of Ras. In this way it can control cellular proliferation and differentiation. RasA2 and RasA3 are both inositol 1,3,4,5-tetrakisphosphate-binding proteins and contain an N-terminal C2 domain, a Ras-GAP domain, a pleckstrin-homology (PH) domain which localizes it to the plasma membrane, and Bruton's Tyrosine Kinase (BTK) a zinc binding domain. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176046 [Multi-domain]  Cd Length: 121  Bit Score: 38.19  E-value: 1.89e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 292 LTVVILEAKNL-KKMDVGGLSDPYVKIHLMQNgkrlKKKKTTIKKNTLNPYYNESFSFEVP--FEQIQkvqivVTVLDYD 368
Cdd:cd08401     2 LKIKIGEAKNLpPRSGPNKMRDCYCTVNLDQE----EVFRTKTVEKSLCPFFGEDFYFEIPrtFRHLS-----FYIYDRD 72
                          90
                  ....*....|.
gi 2125461122 369 KIGKNDAIGKV 379
Cdd:cd08401    73 VLRRDSVIGKV 83
C2B_Synaptotagmin-13 cd08407
C2 domain second repeat present in Synaptotagmin 13; Synaptotagmin is a membrane-trafficking ...
146-252 2.30e-03

C2 domain second repeat present in Synaptotagmin 13; Synaptotagmin is a membrane-trafficking protein characterized by a N-terminal transmembrane region, a linker, and 2 C-terminal C2 domains. Synaptotagmin 13, a member of class 6 synaptotagmins, is located in the brain. It functions are unknown. It, like synaptotagmins 8 and 12, does not have any consensus Ca2+ binding sites. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the second C2 repeat, C2B, and has a type-I topology.


Pssm-ID: 176052 [Multi-domain]  Cd Length: 138  Bit Score: 38.04  E-value: 2.30e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 146 GKIQYSLDYDFQNNQLLVGIIQAAELPA--LDMGGTSDPYVKVFLLPD--KKKKYETKVHRKTLNPVFNEQFTFKVPYSE 221
Cdd:cd08407     2 GEVLLSISYLPAANRLLVVVIKAKNLHSdqLKLLLGIDVSVKVTLKHQnaKLKKKQTKRAKHKINPVWNEMIMFELPSEL 81
                          90       100       110
                  ....*....|....*....|....*....|.
gi 2125461122 222 LGGKTLVMAVYDFDRFSKHDIIGEYKVAMNT 252
Cdd:cd08407    82 LAASSVELEVLNQDSPGQSLPLGRCSLGLHT 112
C2C_Tricalbin-like cd04045
C2 domain third repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are ...
290-379 2.99e-03

C2 domain third repeat present in Tricalbin-like proteins; 5 to 6 copies of the C2 domain are present in Tricalbin, a yeast homolog of Synaptotagmin, which is involved in membrane trafficking and sorting. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the third C2 repeat, C2C, and has a type-II topology.


Pssm-ID: 176010 [Multi-domain]  Cd Length: 120  Bit Score: 37.57  E-value: 2.99e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 290 GKLTVVILEAKNLKKMDVGGLSDPYVKIhlMQNGkrLKKKKTTIKKNTLNPYYNESFSFEVpFEQIQKVQIvvTVLDYDK 369
Cdd:cd04045     1 GVLRLHIRKANDLKNLEGVGKIDPYVRV--LVNG--IVKGRTVTISNTLNPVWDEVLYVPV-TSPNQKITL--EVMDYEK 73
                          90
                  ....*....|
gi 2125461122 370 IGKNDAIGKV 379
Cdd:cd04045    74 VGKDRSLGSV 83
C2_Smurf-like cd08382
C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 ...
291-375 7.75e-03

C2 domain present in Smad ubiquitination-related factor (Smurf)-like proteins; A single C2 domain is found in Smurf proteins, C2-WW-HECT-domain E3s, which play an important role in the downregulation of the TGF-beta signaling pathway. Smurf proteins also regulate cell shape, motility, and polarity by degrading small guanosine triphosphatases (GTPases). C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. Members here have type-II topology.


Pssm-ID: 176028 [Multi-domain]  Cd Length: 123  Bit Score: 36.13  E-value: 7.75e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 291 KLTVVILEAKNLKKMDVGGLSDPYVKIHLmqNGKRLKKKKTTIKKntLNPYYNESFSFEVpfeqIQKVQIVVTVLDYDKI 370
Cdd:cd08382     1 KVRLTVLCADGLAKRDLFRLPDPFAVITV--DGGQTHSTDVAKKT--LDPKWNEHFDLTV----GPSSIITIQVFDQKKF 72

                  ....*
gi 2125461122 371 GKNDA 375
Cdd:cd08382    73 KKKDQ 77
C2A_Synaptotagmin-14_16 cd08389
C2A domain first repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are ...
275-348 9.81e-03

C2A domain first repeat present in Synaptotagmins 14 and 16; Synaptotagmin 14 and 16 are membrane-trafficking proteins in specific tissues outside the brain. Both of these contain C-terminal tandem C2 repeats, but only Synaptotagmin 14 has an N-terminal transmembrane domain and a putative fatty-acylation site. Previously all synaptotagmins were thought to be calcium sensors in the regulation of neurotransmitter release and hormone secretion, but it has been shown that not all of them bind calcium and this is indeed the case here. Of the 17 identified synaptotagmins only 8 bind calcium (1-3, 5-7, 9, 10). The function of the two C2 domains that bind calcium are: regulating the fusion step of synaptic vesicle exocytosis (C2A) and binding to phosphatidyl-inositol-3,4,5-triphosphate (PIP3) in the absence of calcium ions and to phosphatidylinositol bisphosphate (PIP2) in their presence (C2B). C2B also regulates also the recycling step of synaptic vesicles. C2 domains fold into an 8-standed beta-sandwich that can adopt 2 structural arrangements: Type I and Type II, distinguished by a circular permutation involving their N- and C-terminal beta strands. Many C2 domains are Ca2+-dependent membrane-targeting modules that bind a wide variety of substances including bind phospholipids, inositol polyphosphates, and intracellular proteins. Most C2 domain proteins are either signal transduction enzymes that contain a single C2 domain, such as protein kinase C, or membrane trafficking proteins which contain at least two C2 domains, such as synaptotagmin 1. However, there are a few exceptions to this including RIM isoforms and some splice variants of piccolo/aczonin and intersectin which only have a single C2 domain. C2 domains with a calcium binding region have negatively charged residues, primarily aspartates, that serve as ligands for calcium ions. This cd contains the first C2 repeat, C2A, and has a type-I topology.


Pssm-ID: 176035 [Multi-domain]  Cd Length: 124  Bit Score: 36.06  E-value: 9.81e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125461122 275 KLGDICFSLRYVPTAGKLTVVILEAKNLKKMDVGGLSDpyVKIHL-------------MQNGKrlkkkkttikkntlNPY 341
Cdd:cd08389     1 KCGDLDVAFEYDPSARKLTVTVIRAQDIPTKDRGGASS--WQVHLvllpskkqraktkVQRGP--------------NPV 64

                  ....*..
gi 2125461122 342 YNESFSF 348
Cdd:cd08389    65 FNETFTF 71
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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