synaptotagmin-like mitochondrial-lipid-binding protein (SMP) domain found in PDZ domain-containing protein 8 (PDZD8) and similar proteins; PDZ domain-containing protein 8 (PDZD8), also called Sarcoma antigen NY-SAR-84/NY-SAR-104, is a molecular tethering protein that connects endoplasmic reticulum (ER) and mitochondria membranes. PDZD8-dependent endoplasmic reticulum-mitochondria membrane tethering is essential for ER-mitochondria Ca(2+) transfer. In neurons, PDZD8 is involved in the regulation of dendritic Ca(2+) dynamics by regulating mitochondrial Ca(2+) uptake in neurons. It plays an indirect role in the regulation of cell morphology and cytoskeletal organization. PDZD8 is also a novel Gag-interacting factor that promotes retroviral infection. It may act as a novel moesin-interacting cytoskeletal regulatory protein that suppresses infection by herpes simplex virus type 1 (HSV1). This model corresponds to the SMP domain of PDZD8, which may be implicated in lipid transport.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  267 ETLLAVNLLLQFFFREAQNNGLVRRFLIHRINKEMQEGVAKGgaTVNKIIKGLKIYDIEMGTKAPSIGGFEVNSLVLDED 346
Cdd:cd21674     1 ESCVWLNLLFQFLFQELRDTKRVRRWVTKKLNVEFEELLKTK--TAGKFLESITVRDLSLGTSFPVIKNVTVINVKLSED 78

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  347 QKLIESVDLIIHLEYSGGFAMGIDVALPYGKTAFLAAKLCLLKGDLRLKFSRLPYSHWTIAFSPPPILDMPISSRIQGQS 426
Cdd:cd21674    79 EDVPEELDLALDLEYSGGFQLAIDVDLVFGKSAYLSIKVVKLSGRLRLQFSRLPYTHWSFSFYEEPIIEFDVESRFEGRQ 158

                         170       180       190
                  ....*....|....*....|....*....|...
gi 321475457  427 YDAVTDLLASLITSWIQKQHCLPNSKMLTHPLF 459
Cdd:cd21674   159 LPQLTSLIINQIRRVIRKKHTLPNYKIRYKPFF 191

Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational modification, protein turnover, chaperones];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  515 IDFA-PSEAVGHVLLDVRMIRKRDRP-LGFVFHGLPtnatsdysaiDEIIVDLVGNHPAGVVVVSTEPGSAADEAGFRAG 592
Cdd:COG0265   153 IGFAiPINLAKRVVEQLIETGRVRRGwLGVTIQPVT----------PELAEALGLPEPEGVLVARVEPGSPAAKAGLRPG 222

                          90       100
                  ....*....|....*....|.
gi 321475457  593 DVILEVDGLPVNSVRQVLRAI 613
Cdd:COG0265   223 DVILAVDGKPVTSARDLQRLL 243

synaptotagmin-like mitochondrial-lipid-binding protein (SMP) domain found in PDZ domain-containing protein 8 (PDZD8) and similar proteins; PDZ domain-containing protein 8 (PDZD8), also called Sarcoma antigen NY-SAR-84/NY-SAR-104, is a molecular tethering protein that connects endoplasmic reticulum (ER) and mitochondria membranes. PDZD8-dependent endoplasmic reticulum-mitochondria membrane tethering is essential for ER-mitochondria Ca(2+) transfer. In neurons, PDZD8 is involved in the regulation of dendritic Ca(2+) dynamics by regulating mitochondrial Ca(2+) uptake in neurons. It plays an indirect role in the regulation of cell morphology and cytoskeletal organization. PDZD8 is also a novel Gag-interacting factor that promotes retroviral infection. It may act as a novel moesin-interacting cytoskeletal regulatory protein that suppresses infection by herpes simplex virus type 1 (HSV1). This model corresponds to the SMP domain of PDZD8, which may be implicated in lipid transport.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  267 ETLLAVNLLLQFFFREAQNNGLVRRFLIHRINKEMQEGVAKGgaTVNKIIKGLKIYDIEMGTKAPSIGGFEVNSLVLDED 346
Cdd:cd21674     1 ESCVWLNLLFQFLFQELRDTKRVRRWVTKKLNVEFEELLKTK--TAGKFLESITVRDLSLGTSFPVIKNVTVINVKLSED 78

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  347 QKLIESVDLIIHLEYSGGFAMGIDVALPYGKTAFLAAKLCLLKGDLRLKFSRLPYSHWTIAFSPPPILDMPISSRIQGQS 426
Cdd:cd21674    79 EDVPEELDLALDLEYSGGFQLAIDVDLVFGKSAYLSIKVVKLSGRLRLQFSRLPYTHWSFSFYEEPIIEFDVESRFEGRQ 158

                         170       180       190
                  ....*....|....*....|....*....|...
gi 321475457  427 YDAVTDLLASLITSWIQKQHCLPNSKMLTHPLF 459
Cdd:cd21674   159 LPQLTSLIINQIRRVIRKKHTLPNYKIRYKPFF 191

Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational modification, protein turnover, chaperones];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  515 IDFA-PSEAVGHVLLDVRMIRKRDRP-LGFVFHGLPtnatsdysaiDEIIVDLVGNHPAGVVVVSTEPGSAADEAGFRAG 592
Cdd:COG0265   153 IGFAiPINLAKRVVEQLIETGRVRRGwLGVTIQPVT----------PELAEALGLPEPEGVLVARVEPGSPAAKAGLRPG 222

                          90       100
                  ....*....|....*....|.
gi 321475457  593 DVILEVDGLPVNSVRQVLRAI 613
Cdd:COG0265   223 DVILAVDGKPVTSARDLQRLL 243

PDZ domain; This entry represents the PDZ domain from a wide variety of proteins.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 321475457   574 VVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAITTAVAKYVIIQIDR 627
Cdd:pfam17820    1 VVTAVVPGSPAERAGLRVGDVILAVNGKPVRSLEDVARLLQGSAGESVTLTVRR 54

circularly permuted first PDZ domain (PDZ1) of Escherichia coli periplasmic serine endoprotease DegP and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 1 of Escherichia coli DegP (also known as heat shock protein DegP and Protease Do) and related domains. DegP belongs to the HtrA family of housekeeping proteases. It acts as a protease, degrading transiently denatured and unfolded or misfolded proteins which accumulate in the periplasm following heat shock or other stress conditions, and as a molecular chaperone at low temperatures. DegP has two PDZ domains in addition to the protease domain; its PDZ1 domain is responsible for identifying the distinct substrate sequences that affect degradation (degron) of the substrate sequence, and its PDZ2 domain is responsible for combining with other DegP monomers to form a stable oligomer structure. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This DegP family PDZ domain 1 is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*....
gi 321475457  570 PAGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAI-TTAVAKYVIIQIDR 627
Cdd:cd10839    24 PKGALVAQVLPDSPAAKAGLKAGDVILSLNGKPITSSADLRNRVaTTKPGTKVELKILR 82

Domain present in PSD-95, Dlg, and ZO-1/2; Also called DHR (Dlg homologous region) or GLGF (relatively well conserved tetrapeptide in these domains). Some PDZs have been shown to bind C-terminal polypeptides; others appear to bind internal (non-C-terminal) polypeptides. Different PDZs possess different binding specificities.

                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457    533 IRKRDRPLGFVFHGlptnatsdysaideiivdlVGNHPAGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVR--QVL 610
Cdd:smart00228    7 LEKGGGGLGFSLVG-------------------GKDEGGGVVVSSVVPGSPAAKAGLRVGDVILEVNGTSVEGLThlEAV 67

                            90
                    ....*....|....*..
gi 321475457    611 RAITTAVAKyVIIQIDR 627
Cdd:smart00228   68 DLLKKAGGK-VTLTVLR 83

synaptotagmin-like mitochondrial-lipid-binding protein (SMP) domain found in PDZ domain-containing protein 8 (PDZD8) and similar proteins; PDZ domain-containing protein 8 (PDZD8), also called Sarcoma antigen NY-SAR-84/NY-SAR-104, is a molecular tethering protein that connects endoplasmic reticulum (ER) and mitochondria membranes. PDZD8-dependent endoplasmic reticulum-mitochondria membrane tethering is essential for ER-mitochondria Ca(2+) transfer. In neurons, PDZD8 is involved in the regulation of dendritic Ca(2+) dynamics by regulating mitochondrial Ca(2+) uptake in neurons. It plays an indirect role in the regulation of cell morphology and cytoskeletal organization. PDZD8 is also a novel Gag-interacting factor that promotes retroviral infection. It may act as a novel moesin-interacting cytoskeletal regulatory protein that suppresses infection by herpes simplex virus type 1 (HSV1). This model corresponds to the SMP domain of PDZD8, which may be implicated in lipid transport.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  267 ETLLAVNLLLQFFFREAQNNGLVRRFLIHRINKEMQEGVAKGgaTVNKIIKGLKIYDIEMGTKAPSIGGFEVNSLVLDED 346
Cdd:cd21674     1 ESCVWLNLLFQFLFQELRDTKRVRRWVTKKLNVEFEELLKTK--TAGKFLESITVRDLSLGTSFPVIKNVTVINVKLSED 78

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  347 QKLIESVDLIIHLEYSGGFAMGIDVALPYGKTAFLAAKLCLLKGDLRLKFSRLPYSHWTIAFSPPPILDMPISSRIQGQS 426
Cdd:cd21674    79 EDVPEELDLALDLEYSGGFQLAIDVDLVFGKSAYLSIKVVKLSGRLRLQFSRLPYTHWSFSFYEEPIIEFDVESRFEGRQ 158

                         170       180       190
                  ....*....|....*....|....*....|...
gi 321475457  427 YDAVTDLLASLITSWIQKQHCLPNSKMLTHPLF 459
Cdd:cd21674   159 LPQLTSLIINQIRRVIRKKHTLPNYKIRYKPFF 191

Periplasmic serine protease, S1-C subfamily, contain C-terminal PDZ domain [Posttranslational modification, protein turnover, chaperones];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  515 IDFA-PSEAVGHVLLDVRMIRKRDRP-LGFVFHGLPtnatsdysaiDEIIVDLVGNHPAGVVVVSTEPGSAADEAGFRAG 592
Cdd:COG0265   153 IGFAiPINLAKRVVEQLIETGRVRRGwLGVTIQPVT----------PELAEALGLPEPEGVLVARVEPGSPAAKAGLRPG 222

                          90       100
                  ....*....|....*....|.
gi 321475457  593 DVILEVDGLPVNSVRQVLRAI 613
Cdd:COG0265   223 DVILAVDGKPVTSARDLQRLL 243

PDZ domain; This entry represents the PDZ domain from a wide variety of proteins.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....
gi 321475457   574 VVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAITTAVAKYVIIQIDR 627
Cdd:pfam17820    1 VVTAVVPGSPAERAGLRVGDVILAVNGKPVRSLEDVARLLQGSAGESVTLTVRR 54

circularly permuted first PDZ domain (PDZ1) of Escherichia coli periplasmic serine endoprotease DegP and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 1 of Escherichia coli DegP (also known as heat shock protein DegP and Protease Do) and related domains. DegP belongs to the HtrA family of housekeeping proteases. It acts as a protease, degrading transiently denatured and unfolded or misfolded proteins which accumulate in the periplasm following heat shock or other stress conditions, and as a molecular chaperone at low temperatures. DegP has two PDZ domains in addition to the protease domain; its PDZ1 domain is responsible for identifying the distinct substrate sequences that affect degradation (degron) of the substrate sequence, and its PDZ2 domain is responsible for combining with other DegP monomers to form a stable oligomer structure. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This DegP family PDZ domain 1 is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*....
gi 321475457  570 PAGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAI-TTAVAKYVIIQIDR 627
Cdd:cd10839    24 PKGALVAQVLPDSPAAKAGLKAGDVILSLNGKPITSSADLRNRVaTTKPGTKVELKILR 82

Phorbol esters/diacylglycerol binding domain (C1 domain); This domain is also known as the Protein kinase C conserved region 1 (C1) domain.

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|....*....
gi 321475457   898 HDWTLRRFGQLQNCDICQSKIWLGE--GLYCPRCGLIIHKKCFKRIITE 944
Cdd:pfam00130    1 HHFVHRNFKQPTFCDHCGEFLWGLGkqGLKCSWCKLNVHKRCHEKVPPE 49

circularly permuted PDZ domain of Arabidopsis thaliana putative protease Do-like 14 (DEGP14) and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Arabidopsis thaliana putative protease DEGP14 and related domains. DEGP14 is a putative protease belonging to the HtrA family of housekeeping proteases. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This AtDEGP14-like PDZ domain is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*....
gi 321475457  571 AGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAITTAVAK 619
Cdd:cd23085    31 AGVLVPQVIPGSPAERAGLRPGDVIVEFDGKPVDSTKQIIDALGDKVGK 79

circularly permuted PDZ domains of Escherichia coli Regulator of sigma-E protease (RseP) and related domains; Permuted PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of ResP (also known as Site-2 protease RseP, and YaeL), and related domains. RseP is involved in the regulation of an extracytoplasmic stress response through the cleavage of membrane-spanning anti-stress-response transcription factor (anti-sigmE) protein RseA; it cleaves the peptide bond between the critical alanine and cysteine in the transmembrane region of RseA, releasing the cytoplasmic domain of RseA with its associated sigmaE. RseP contains two tandem-arranged periplasmic PDZ domains (PDZ-N/PDZ1 and PDZ-C/PDZ2) which act to negatively regulate protease action on intact RseA; they serve as a size-exclusion filter which prevents the access of an intact RseA into the active site of RseP. PDZ domains usually bind in sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This RseP family PDZ domain is a circularly permuted PDZ domain which places both beta-strands A and B at the C-terminus. Another permutation exists in the PDZ superfamily which places beta-strand A at the C-terminus.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|.
gi 321475457  573 VVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAI 613
Cdd:cd23081     1 PVVGEVVANSPAAEAGLKPGDRILKIDGQKVRTWEDIVRIV 41

Domain present in PSD-95, Dlg, and ZO-1/2; Also called DHR (Dlg homologous region) or GLGF (relatively well conserved tetrapeptide in these domains). Some PDZs have been shown to bind C-terminal polypeptides; others appear to bind internal (non-C-terminal) polypeptides. Different PDZs possess different binding specificities.

                            10        20        30        40        50        60        70        80
                    ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457    533 IRKRDRPLGFVFHGlptnatsdysaideiivdlVGNHPAGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVR--QVL 610
Cdd:smart00228    7 LEKGGGGLGFSLVG-------------------GKDEGGGVVVSSVVPGSPAAKAGLRVGDVILEVNGTSVEGLThlEAV 67

                            90
                    ....*....|....*..
gi 321475457    611 RAITTAVAKyVIIQIDR 627
Cdd:smart00228   68 DLLKKAGGK-VTLTVLR 83

synaptotagmin-like mitochondrial-lipid-binding protein (SMP) domain superfamily; The SMP domain is a lipid transport domain found in phospholipid transfer proteins such as synaptotagmin family proteins, tricalbin (TCB) family proteins, maintenance of mitochondrial morphology protein 1 (MMM1), mitochondrial distribution and morphology protein 12 (MDM12), mitochondrial distribution and morphology protein 34 (MDM34), PDZ domain-containing protein 8 (PDZD8), testis-expressed protein 2 (TEX2), meiotically up-regulated gene 190 protein (Mug190), C2 domain-containing protein 2 (C2CD2) and C2 domain-containing protein 2-like (C2CD2L). The SMP domain belongs to a superfamily of lipid/hydrophobic ligand-binding domains called TULIP (tubular lipid-binding proteins). It adopts a TULIP fold with two alpha helices and a highly curved antiparallel beta sheet forming a cornucopia-like structure.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 321475457  313 NKIIKGLKIYDIEMGTKAPSIGGFEVNSLVLDEDQkliesVDLIIHLEYSGGFAMGIDVAL---PYGKTAFLAAKLCLLK 389
Cdd:cd21669    19 PSFIESLELTEFTLGSNPPRIKSVRVLDSPSSDLQ-----LVLDLDLEYAGDFSVVLSAKLgggGLGLPVPVSVSDLSLE 93

                          90       100       110       120       130       140
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 321475457  390 GDLRLKFSRLPY----SHWTIAFSPPPILDMPIS--SRIQGQSYDAVTDLLASLITSWIQKQHCLPN 450
Cdd:cd21669    94 GRLRVRLTLLPEfpyvGALSISFVEPPDIDFSIRplGGVDLMELPGLSSWLEKLLTDALVELLVEPN 160

protein kinase C conserved region 1 (C1 domain) found in tensin-2 like (TNS2-like) proteins; The TNS2-like group includes TNS2, and variants of TNS1 and TNS3. Tensin-2 (TNS2), also called C1 domain-containing phosphatase and tensin (C1-TEN), or tensin-like C1 domain-containing phosphatase (TENC1), is an essential component for the maintenance of glomerular basement membrane (GBM) structures. It regulates cell motility and proliferation. It may have phosphatase activity. TNS2 reduces AKT1 phosphorylation, lowers AKT1 kinase activity and interferes with AKT1 signaling. Tensin-1 (TNS1) plays a role in fibrillar adhesion formation. It may be involved in cell migration, cartilage development and in linking signal transduction pathways to the cytoskeleton. Tensin-3 (TNS3), also called tensin-like SH2 domain-containing protein 1 (TENS1), or tumor endothelial marker 6 (TEM6), may play a role in actin remodeling. It is involved in the dissociation of the integrin-tensin-actin complex. Typical TNS1 and TNS3 do not contain C1 domains, but some isoforms/variants do. Members of this family contain an N-terminal region with a zinc finger (C1 domain), a protein tyrosine phosphatase (PTP)-like domain and a protein kinase 2 (C2) domain, and a C-terminal region with SH2 and pTyr binding (PTB) domains. This model corresponds to C1 domain. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*..
gi 321475457  897 PHDWTLRRFGQLQNCDICQSKIWlGEGLYCPRCGLIIHKKCFKRIIT 943
Cdd:cd20826     2 SHSFKEKSFRKPRTCDVCKQIIW-NEGSSCRVCKYACHRKCEPKVTA 47

circularly permuted PDZ domain of C-terminal processing peptidase (CPP), a serine protease, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of CPP (also known as tail-specific protease, PRC protein, Protease Re, and Photosystem II D1 protein processing peptidase), and related domains. CPP belongs to the peptidase S41A family. It cleaves a C-terminal 11 residue peptide from the precursor form of penicillin-binding protein 3, and may have a role in protecting bacterium from thermal and osmotic stresses. In the plant chloroplast, the enzyme removes the C-terminal extension of the D1 polypeptide of photosystem II. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This CPP-like PDZ domain is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus.

                          10        20        30
                  ....*....|....*....|....*....|..
gi 321475457  572 GVVVVSTEPGSAADEAGFRAGDVILEVDGLPV 603
Cdd:cd06782    15 YLVVVSPIPGGPAEKAGIKPGDVIVAVDGESV 46

periplasmic serine protease, Do/DeqQ family; This family consists of a set proteins various designated DegP, heat shock protein HtrA, and protease DO. The ortholog in Pseudomonas aeruginosa is designated MucD and is found in an operon that controls mucoid phenotype. This family also includes the DegQ (HhoA) paralog in E. coli which can rescue a DegP mutant, but not the smaller DegS paralog, which cannot. Members of this family are located in the periplasm and have separable functions as both protease and chaperone. Members have a trypsin domain and two copies of a PDZ domain. This protein protects bacteria from thermal and other stresses and may be important for the survival of bacterial pathogens.// The chaperone function is dominant at low temperatures, whereas the proteolytic activity is turned on at elevated temperatures. [Protein fate, Protein folding and stabilization, Protein fate, Degradation of proteins, peptides, and glycopeptides]

                           10        20        30        40
                   ....*....|....*....|....*....|....*....|..
gi 321475457   572 GVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAI 613
Cdd:TIGR02037  363 GVVVTKVVSGSPAARAGLQPGDVILSVNQQPVSSVAELRKVL 404

PDZ domain; PDZ domains are found in diverse signaling proteins.

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|..
gi 321475457   562 IVDLVGNHPAGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRqVLRAI 613
Cdd:pfam00595   16 LKGGSDQGDPGIFVSEVLPGGAAEAGGLKVGDRILSINGQDVENMT-HEEAV 66

protein kinase C conserved region 1 (C1 domain) found in the atypical protein kinase C (aPKC) family; PKCs are classified into three groups (classical, atypical, and novel) depending on their mode of activation and the structural characteristics of their regulatory domain. aPKCs only require phosphatidylserine (PS) for activation. They contain a C2-like region, instead of a calcium-binding (C2) region found in classical PKCs, in their regulatory domain. There are two aPKC isoforms, zeta and iota. aPKCs are involved in many cellular functions including proliferation, migration, apoptosis, polarity maintenance and cytoskeletal regulation. They also play a critical role in the regulation of glucose metabolism and in the pathogenesis of type 2 diabetes. PKC-zeta plays a critical role in activating the glucose transport response. It is activated by glucose, insulin, and exercise through diverse pathways. PKC-zeta also plays a central role in maintaining cell polarity in yeast and mammalian cells. In addition, it affects actin remodeling in muscle cells. PKC-iota is directly implicated in carcinogenesis. It is critical to oncogenic signaling mediated by Ras and Bcr-Abl. The PKC-iota gene is the target of tumor-specific gene amplification in many human cancers, and has been identified as a human oncogene. In addition to its role in transformed growth, PKC-iota also promotes invasion, chemoresistance, and tumor cell survival. Expression profiling of PKC-iota is a prognostic marker of poor clinical outcome in several human cancers. PKC-iota also plays a role in establishing cell polarity, and has critical embryonic functions. Members of this family contain one C1 domain. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|.
gi 321475457  903 RRFGQLQNCDICQSKIW-LG-EGLYCPRCGLIIHKKCFKRI 941
Cdd:cd20794     8 KRFNRRAVCAYCSDRIWgLGrQGYKCINCKLLVHKKCHKLV 48

C-terminal processing protease CtpA/Prc, contains a PDZ domain [Posttranslational modification, protein turnover, chaperones];

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*...
gi 321475457  572 GVVVVSTEPGSAADEAGFRAGDVILEVDGLPVN--SVRQVLRAITTAVAKYVIIQIDR 627
Cdd:COG0793    72 KVVVVSVIPGSPAEKAGIKPGDIILAIDGKSVAglTLDDAVKLLRGKAGTKVTLTIKR 129

protein kinase C conserved region 1 (C1 domain) found in Schizosaccharomyces pombe protein BZZ1 and similar proteins; BZZ1 is a syndapin-like F-BAR protein that plays a role in endocytosis and trafficking to the vacuole. It functions with type I myosins to restore polarity of the actin cytoskeleton after NaCl stress. BZZ1 contains an N-terminal F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a central coiled-coil, and two C-terminal SH3 domains. Schizosaccharomyces pombe BZZ1 also harbors a C1 domain, but Saccharomyces cerevisiae BZZ1 doesn't have any. This model corresponds to the C1 domain. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|...
gi 321475457  897 PHDWTLRRFGQLQNCDICQSKIW--LGEGLYCPRCGLIIHKKC 937
Cdd:cd20824     1 PHNFKPHSFSIPTKCDYCGEKIWglSKKGLSCKDCGFNCHIKC 43

protein kinase C conserved region 1 (C1 domain) found in the atypical protein kinase C (aPKC) iota type; PKCs are classified into three groups (classical, atypical, and novel) depending on their mode of activation and the structural characteristics of their regulatory domain. aPKCs only require phosphatidylserine (PS) for activation. They contain a C2-like region, instead of a calcium-binding (C2) region found in classical PKCs, in their regulatory domain. There are two aPKC isoforms, zeta and iota. aPKCs are involved in many cellular functions including proliferation, migration, apoptosis, polarity maintenance and cytoskeletal regulation. They also play a critical role in the regulation of glucose metabolism and in the pathogenesis of type 2 diabetes. PKC-iota is directly implicated in carcinogenesis. It is critical to oncogenic signaling mediated by Ras and Bcr-Abl. The PKC-iota gene is the target of tumor-specific gene amplification in many human cancers, and has been identified as a human oncogene. In addition to its role in transformed growth, PKC-iota also promotes invasion, chemoresistance, and tumor cell survival. Expression profiling of PKC-iota is a prognostic marker of poor clinical outcome in several human cancers. PKC-iota also plays a role in establishing cell polarity, and has critical embryonic functions. Members of this family contain C1 domain found in aPKC isoform iota. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*....
gi 321475457  898 HDWTLRRFGQLQNCDICQSKIW-LG-EGLYCPRCGLIIHKKCFKRIITE 944
Cdd:cd21094     3 HTFQAKRFNRRAHCAICTDRIWgLGrQGYKCINCKLLVHKKCHKLVTIE 51

second protein kinase C conserved region 1 (C1 domain) found in uncharacterized phosphatidylinositol 3-kinase regulatory subunit-like proteins; The family includes a group of uncharacterized proteins that show high sequence similarity to vertebrate phosphatidylinositol 3-kinase regulatory subunits (PIK3Rs), which bind to activated (phosphorylated) protein-tyrosine kinases through its SH2 domain and regulate their kinase activity. Unlike typical PIK3Rs, members of this family have two C1 domains. This model corresponds to the second one. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|..
gi 321475457  898 HDWTLRRFGQLQNCDICQSKIW--LGEGLYCPRCGLIIHKKC 937
Cdd:cd20830     1 HRFVEQSFSTLQWCDKCGKFLFglVHQGLQCQDCGLVCHRTC 42

Peptidase family M50;

                           10        20        30        40        50
                   ....*....|....*....|....*....|....*....|....*....|....*...
gi 321475457   570 PAGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAITTAVAKYVIIQIDR 627
Cdd:pfam02163   92 PAPPVIGGVAPGSPAAKAGLKPGDVILSINGKKITSWQDLVEALAKSPGKPITLTVER 149

circularly permuted PDZ domain 2 (PDZ-C) of Escherichia coli Regulator of sigma-E protease (RseP) and related domains; Permuted PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of ResP (also known as Site-2 protease RseP, and YaeL) and related domains. RseP is involved in the regulation of an extracytoplasmic stress response through the cleavage of membrane-spanning anti-stress-response transcription factor (anti-sigmaE) protein RseA; it cleaves the peptide bond between the critical alanine and cysteine in the transmembrane region of RseA, releasing the cytoplasmic domain of RseA with it associated sigmaE. RseP contains two tandem-arranged periplasmic PDZ domains (PDZ-N/PDZ1 and PDZ-C/PDZ2) which act to negatively regulate protease action on intact RseA; they serve as a size-exclusion filter which prevents the access of an intact RseA into the active site of RseP. PDZ domains usually bind in sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This RseP family PDZ domain is a circularly permuted PDZ domain which places both beta-strands A and B at the C-terminus. Another permutation exists in the PDZ superfamily which places beta-strand A at the C-terminus.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....
gi 321475457  574 VVVSTEPGSAADEAGFRAGDVILEVDGLPVNSVRQVLRAITTAVAKYVIIQIDR 627
Cdd:cd23083     2 VLANVQPNSAAEKAGLQAGDRIVKVDGQPLTQWQTFVMAVRDNPGKPLALEIER 55

Predicted metalloprotease, contains C-terminal PDZ domain [General function prediction only];

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|
gi 321475457  566 VGNHPAGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNS 605
Cdd:COG3975   489 VSADGGGLVVTSVLWGSPAYKAGLSAGDELLAIDGLRVTA 528

protein kinase C conserved region 1 (C1 domain) found in unconventional myosin-IXb and similar proteins; Myosin-IXb, also called unconventional myosin-9b (Myo9b), is an actin-dependent motor protein of the unconventional myosin IX class. It is expressed abundantly in tissues of the immune system, like lymph nodes, thymus, and spleen, and in several immune cells including dendritic cells, macrophages and CD4+ T cells. Myosin-IXb contains a Ras-associating (RA) domain, a motor domain, a protein kinase C conserved region 1 (C1), and a Rho GTPase activating (RhoGAP) domain. Myosin-IXb acts as a motorized signaling molecule that links Rho signaling to the dynamic actin cytoskeleton. It regulates leukocyte migration by controlling RhoA signaling. Myosin-IXb is also involved in the development of autoimmune diseases, including rheumatoid arthritis, systemic lupus erythematosus, and type 1 diabetes. Moreover, Myosin-IXb is a ROBO-interacting protein that suppresses RhoA activity in lung cancer cells. This model corresponds to the C1 domain. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

                          10        20        30
                  ....*....|....*....|....*....|....*...
gi 321475457  908 LQNCDICQSKIWLGE-GLYCPRCGLIIHKKCFKRIITE 944
Cdd:cd20884    16 MQSCEQCSSYIWAMEkALLCSVCKMTCHKKCLSKIQSH 53

circularly permuted PDZ domain of Arabidopsis thaliana DEGP1, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Arabidopsis thaliana DEGP1 (also known as protease Do-like 1, chloroplastic, protein DEGRADATION OF PERIPLASMIC PROTEINS 1, DEGP PROTEASE 1 and DEG1), and related domains. DEGP1 is a serine protease that is required at high temperature and may be involved in the degradation of damaged proteins. This family also includes Arabidopsis protease DEGP8/Do-like 8 (chloroplastic), a probable serine protease. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This AtDEGP-like PDZ domain is a circularly permuted PDZ domain which places beta-strand A on the C-terminus. Another permutation exists in the PDZ superfamily which places both beta-strands A and B on the C-terminus.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|....*
gi 321475457  570 PAGVVVVSTEPGSAADEAGFRA-----------GDVILEVDGLPVNSVRQVLRAI 613
Cdd:cd00990    22 RSGVLVLDVPPGGPAAKAGLRGtkrdefgrivlGDVIVAVDGKPVKNESDLYRAL 76

protein kinase C conserved region 1 (C1 domain) found in uncharacterized proteins similar to myotubularin-related proteins; The family includes a group of uncharacterized proteins that show high sequence similarity to vertebrate myotubularin-related proteins (MTMRs), such as MTMR5 and MTMR13. MTMRs may function as guanine nucleotide exchange factors (GEFs). Vertebrate MTMR5 and MTMR13 contain an N-terminal DENN domain, a PH-GRAM domain, an inactive PTP domain, a SET interaction domain, a coiled-coil domain, and a C-terminal PH domain. Members of this family contain these domains and have an additional C1 domain. This model corresponds to the C1 domain. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|...
gi 321475457  897 PHDWTLRRFGQLQNCDICQSKIW--LGEGLYCPRCGLIIHKKCFKRIITENRK 947
Cdd:cd20828     5 PHNFEPHSFVTPTNCDYCLQILWgiVKKGMKCSECGYNCHEKCQPQVPKQCSK 57

PDZ domains of the Na+/H+ exchange regulatory cofactor (NHERF) family (NHERF1-4), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of the Na+/H+ exchange regulatory cofactor (NHERF) family of multi-PDZ-domain-containing scaffolding proteins (NHERF1-4), and related domains. The NHERF family includes NHERF1 (also known as EBP50), NHERF2 (also known as E3KARP; TKA-1; SIP-1), NHERF3 (also known as CAP70; CLAMP; Napi-Cap-1; PDZD1) and NHERF4 (also known as IKEPP; PDZK2; Napi-Cap-2). NHERF1 and NHERF2 have tandem PDZ domains (PDZ1-2); NHERF3 and NHERF4 have four PDZ domains (PDZ1-4). NHERFs are involved in the regulation of multiple receptors or transporters, such as type II sodium-phosphate cotransporter (Npt2a), purinergic P2Y1 receptor P2Y1R, the beta2-adrenergic receptor (beta2-AR), parathyroid hormone receptor type 1 (PTHR), the lysophosphatidic acid receptors (LPARs), sodium-hydrogen exchanger 3 (NHE3), and cystic fibrosis transmembrane conductance regulator (CFTR). NHERF-PDZ1 domain interaction partners include Npt2a, purinergic P2Y1 receptor, beta2-AR, CFTR, PTHR, NH3, G-protein-coupled receptor kinase 6 (GRK6A), platelet-derived growth factor receptor (PDGFR), B1 subunit of the H+ATPase, cholesterol, receptor for activated C-kinase RACK1, aquaporin 9, among others. The NHERF PDZ2 domain interacts with fewer proteins: NHERF1 PDZ2 binds Npt2a, PTHR, beta-catenin, aquaporin 9, and RACK1; NHERF2 PDZ2 binds LPA2, P2Y1R, and NHE3, cGMP-dependent protein kinase type II (cGKII). NHERF4 PDZ1 and PDZ4 bind the epithelial Ca(2+) channels TRPV5 and TRPV6. NHERF2/NHERF3 heterodimerization is mediated by PDZ domains of NHERF2 and the C-terminal PDZ domain recognition motif of NHERF3. NHERF4 regulates several transporters mediating influx of xenobiotics and nutrients in the small intestine. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This NHERF-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                          10        20        30
                  ....*....|....*....|....*....|..
gi 321475457  572 GVVVVSTEPGSAADEAGFRAGDVILEVDGLPV 603
Cdd:cd06768    24 GHFIREVDPGSPAERAGLKDGDRLVEVNGENV 55

PDZ domain of regulator of G-protein signaling 3 (RGS3), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of RGS3, and related domains. RGS3 down-regulates GPCR signal transduction by increasing the GTPase activity of G-protein alpha subunits, thereby driving G-proteins into their inactive GDP-bound form. It downregulates G-protein-mediated release of inositol phosphates and activation of MAP kinases. In Eph/ephrin signaling, RGS3 binds via its PDZ domain to the cytoplasmic C terminus of Eph receptor tyrosine kinase EphB. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This RGS3-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                          10        20        30
                  ....*....|....*....|....*....|....*....
gi 321475457  565 LVGNHPagVVVVSTEPGSAADEAGFRAGDVILEVDGLPV 603
Cdd:cd06711    16 ICDDSP--VRVQAVDPGGPAEQAGLQQGDTVLQINGQPV 52

PDZ domain 1 of the canonical isoform 1 of PDZ domain containing 7 (PDZD7), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 1 of the long isoform 1 of PDZD7, and related domains. PDZD7 is critical for the organization of Usher syndrome type 2 (USH2) complex. Usher syndrome is the leading cause of hereditary sensory deaf-blindness in humans; USH2 is the most common sub-type. Formation of the USH2 complex is based upon heterodimerization between PDZD7 and whirlin (another PDZ domain-containing protein) and a subsequent dynamic interplay between USH2 proteins via their multiple PDZ domains. The PDZD7 PDZ2 domain binds GPR98 (also known as VLGR1) and usherin (USH2A). PDZD7 and whirlin form heterodimers through their multiple PDZ domains; whirlin and PDZD7 interact with usherin and GPR98 to form an interdependent ankle link complex. PDZD7 also interacts with myosin VIIa. PDZD7 also forms homodimers through its PDZ2 domain. Various isoforms of PDZD7 produced by alternative splicing have been identified; this subgroup includes the first PDZ domain of the canonical isoform of PDZD7- isoform 1. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This PDZD7-like family PDZ1 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                          10        20        30
                  ....*....|....*....|....*....|....*...
gi 321475457  569 HPAGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSV 606
Cdd:cd10833    24 HGLGIFVSKVEEGSAAERAGLCVGDKITEVNGVSLENI 61

PDZ domain 2 of harmonin isoforms a, b, and c, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 2 of harmonin isoforms a, b, and c, and related domains. Harmonin (also known as Usher Type 1C, PDZ-73 and AIE-75) is a key organizer of the Usher (USH) protein interactome. USH syndrome is the leading cause of hereditary sensory deaf-blindness in humans; three clinically distinct types of USH have been identified, type 1 to 3. The gene encoding harmonin (USH1C) is the causative gene for the USH type 1C phenotype. There are at least 10 alternatively spliced isoforms of harmonin, which are divided into three subclasses (a, b, and c). All isoforms contain the first two PDZ domains and the first coiled-coil domain. The a and b isoforms all have a third PDZ domain. The different PDZ domains are responsible for interactions with all known Usher syndrome type 1 proteins, and most Usher syndrome type 2 proteins. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This harmonin family PDZ2 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

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                  ....*....|....*....|....*....|....*....|
gi 321475457  567 GNHPaGVVVVSTEPGSAADEAGFRAGDVILEVDGLPVNSV 606
Cdd:cd06738    24 TQKP-GIFISNVKPGSLAEEVGLEVGDQIVEVNGTSFTNV 62

PDZ domain of rhophilin-1, rhophilin-2, and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of rhophilin-1, rhophilin-2, and related domains. Rhophilin-1 (RHPN1, also known as GTP-Rho-binding protein 1) and rhophilin-2 (RHPN2, also known as GTP-Rho-binding protein 2) are Rho-GTP binding proteins involved in cytoskeletal dynamics. Rhophilin-2 inhibits RhoA's activity to induce F-actin stress fibers. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This rhophilin-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                          10        20        30
                  ....*....|....*....|....*....|....*..
gi 321475457  567 GNHPagVVVVSTEPGSAADEAGFRAGDVILEVDGLPV 603
Cdd:cd06712    19 GDSP--VQVASVDPGSCAAEAGLKEGDYIVSVGGVDC 53

PDZ domain 2 of the full-length isoform of whirlin and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain 2 of the full-length isoform of whirlin and related domains. Whirlin is an essential protein for developmental pathways in photoreceptor cells of the retina and hair cells of the inner ear. The full-length whirlin isoform has two harmonin N-like domains, three PDZ domains, a proline-rich region, and a PDZ-binding motif. Whirlin isoforms may form different complexes at the periciliary membrane complex (PMC) in photoreceptors, and the stereociliary tip and base in inner ear hair cells. It interacts with ADGRV1 and usherin at the PMC; with SANS and RpgrORF15 at the connecting cilium in photoreceptors; with EPS8, MYO15A, p55, and CASK proteins at the stereociliary tip of inner ear hair cells; and with ADGRV1, usherin, and PDZD7 at the stereociliary base in inner ear hair cells. Mutations in the gene encoding whirlin (WHRN; also known as USH2D and DFNB31), have been found to cause either USH2 subtype (USH2D) or autosomal recessive non-syndromic deafness type 31 (DFNB31). Whirlin is the key protein in the USH2 complex (whirlin, usherin and GPR98) which recruits other USH2 causative proteins at the periciliary membrane in photoreceptors and the ankle link of the stereocilia in hair cells. Whirlin's interaction with espin, another stereociliary protein, may be important for the architecture of the USH2 complex. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This whirlin family PDZ2 domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

                          10        20
                  ....*....|....*....|....*....
gi 321475457  572 GVVVVSTEPGSAADEAGFRAGDVILEVDG 600
Cdd:cd06741    27 GIYVTGVDPGSVAENAGLKVGDQILEVNG 55

circularly permuted PDZ domains of Escherichia coli Regulator of sigma-E protease (RseP), Bacillus subtilis YlbL protease, and related domains; Permuted PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of ResP (also known as Site-2 protease RseP, and YaeL), Bacillus subtilis YlbL, and related domains, including archaeal and chloroplast PDZ domains. RseP participates in the regulation of an extracytoplasmic stress response through the cleavage of membrane-spanning anti-stress-response transcription factor (anti-sigmaE) protein RseA. YlbL is an S16 protease which participates with another unrelated S41 protease (CtpA) in a dual protease mechanism that promotes DNA damage checkpoint recovery. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains and as well as those with circular permutations and domain swapping of beta-strands. The canonical PDZ domain contains six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2); arranged as beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F. This RseP-YlbL family PDZ domain is a circularly permuted PDZ domain which places both beta-strands A and B at the C-terminus. Another permutation exists in the PDZ superfamily which places beta-strand A at the C-terminus.

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                  ....*....|....*....|....*....|....*....|....*....|....*..
gi 321475457  573 VVVVSTEPGSAADEAGfRAGDVILEVDGLPV-NSVRQVLRAITTAVAKYVIIQIDRF 628
Cdd:cd10824     1 VVVLSVKPNSPAAKAL-HAGDLITEIDGQPTkSWQTFIDYIHDKKVGESVKITYKHG 56

PDZ domain of Drosophila melanogaster PDZ and LIM domain protein Zasp52 (also known as Zasp), and related domains; PDZ (PSD-95 (Postsynaptic density protein 95), Dlg (Discs large protein), and ZO-1 (Zonula occludens-1)) domain of Drosophila melanogaster Zasp52 and related domains. Drosophila melanogaster Zasp52 (also known as Z band alternatively spliced PDZ-motif protein or Zasp) colocalizes with integrins at myotendinous junctions and with alpha-actinin at Z-disks and is required for muscle attachment as well as Z-disk assembly and maintenance. The Zasp52 actin-binding site includes the extended PDZ domain and the ZM region. The Zasp52-PDZ domain is required for myofibril assembly. PDZ domains usually bind in a sequence-specific manner to short peptide sequences located at the C-terminal end of their partner proteins (known as PDZ binding motifs). The PDZ superfamily includes canonical PDZ domains as well as those with circular permutations and domain swapping mediated by beta-strands. This Zasp52-like family domain is a canonical PDZ domain containing six beta-strands A-F and two alpha-helices (alpha-helix 1 and 2), arranged in the order: beta-strands A, B, C, alpha-helix 1, beta-strands D, E, alpha-helix 2 and beta-strand F.

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                  ....*....|....*....|....*....|....*....|....*....|
gi 321475457  575 VVSTEPGSAADEAGFRAGDVILEVDGLPVnsvrqvlRAITTAVAKYVIIQ 624
Cdd:cd23068    29 IQKVNPGSPADKAGLRRGDVILRINGTDT-------SNLTHKQAQDLIKR 71

protein kinase C conserved region 1 (C1 domain) found in the Raf (Rapidly Accelerated Fibrosarcoma) kinase family; Raf kinases are serine/threonine kinases (STKs) that catalyze the transfer of the gamma-phosphoryl group from ATP to serine/threonine residues on protein substrates. They act as mitogen-activated protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs), which phosphorylate and activate MAPK kinases (MAPKKs or MKKs or MAP2Ks), which in turn phosphorylate and activate MAPKs during signaling cascades that are important in mediating cellular responses to extracellular signals. They function in the linear Ras-Raf-MEK-ERK pathway that regulates many cellular processes including cycle regulation, proliferation, differentiation, survival, and apoptosis. Aberrant expression or activation of components in this pathway are associated with tumor initiation, progression, and metastasis. Raf proteins contain a Ras binding domain, a zinc finger cysteine-rich domain (C1), and a catalytic kinase domain. Vertebrates have three Raf isoforms (A-, B-, and C-Raf) with different expression profiles, modes of regulation, and abilities to function in the ERK cascade, depending on cellular context and stimuli. They have essential and non-overlapping roles during embryo- and organogenesis. Knockout of each isoform results in a lethal phenotype or abnormality in most mouse strains. This model describes the C1 domain. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

                          10        20        30
                  ....*....|....*....|....*....|
gi 321475457  908 LQNCDICQSKIWlgEGLYCPRCGLIIHKKC 937
Cdd:cd20811    13 LAFCDVCRKLLF--QGFRCQTCGFKFHQRC 40

protein kinase C conserved region 1 (C1 domain) found in tensin-1 (TNS1) variant and similar proteins; Tensin-1 (TNS1) plays a role in fibrillar adhesion formation. It may be involved in cell migration, cartilage development and in linking signal transduction pathways to the cytoskeleton. This model corresponds to the C1 domain found in TNS1 variant. Typical TNS1 does not contain C1 domain. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

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                  ....*....|....*....|....*....|....*....|....*.
gi 321475457  898 HDWTLRRFGQLQNCDICQSKIwLGEGLYCPRCGLIIHKKCFKRIIT 943
Cdd:cd20888     6 HTFKVKTFKKVKSCGICKQAI-TREGSTCRVCKLSCHKKCEAKVAT 50

first protein kinase C conserved region 1 (C1 domain) found in type II diacylglycerol kinases; Diacylglycerol (DAG) kinase (EC 2.7.1.107) is a lipid kinase that phosphorylates diacylglycerol to form phosphatidic acid. Type II DAG kinases (DGKs) contain pleckstrin homology (PH) and sterile alpha motifs (SAM) domains, in addition to C1 and catalytic domains that are present in all DGKs. The SAM domain mediates oligomerization of type II DGKs. Three DGK isozymes (delta, eta and kappa) are classified as type II. DAG kinase delta, also called 130 kDa DAG kinase, or diglyceride kinase delta (DGK-delta), is a residential lipid kinase in the endoplasmic reticulum. It promotes lipogenesis and is involved in triglyceride biosynthesis. DAG kinase eta, also called diglyceride kinase eta (DGK-eta), plays a key role in promoting cell growth. The DAG kinase eta gene, DGKH, is a replicated risk gene of bipolar disorder (BPD). DAG kinase kappa is also called diglyceride kinase kappa (DGK-kappa) or 142 kDa DAG kinase. Members of this family contain two copies of the C1 domain. This model corresponds to the first one. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

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gi 321475457  898 HDWTLRRFGQLQNCDICQSKI--WLGEGLYCPRCGLIIHKKCFKRiITENRKWC 949
Cdd:cd20800     5 HNWYACSHARPTYCNVCREALsgVTSHGLSCEVCKFKAHKRCAVK-APNNCKWT 57

first protein kinase C conserved region 1 (C1 domain) found in protein kinase D3 (PKD3) and similar proteins; PKD3 is also called PRKD3, PRKCN, serine/threonine-protein kinase D3 (nPKC-D3), protein kinase C nu type (nPKC-nu), or protein kinase EPK2. It converts transient diacylglycerol (DAG) signals into prolonged physiological effects, downstream of PKC. It is involved in the regulation of the cell cycle by modulating microtubule nucleation and dynamics. PKD3 acts as a key mediator in several cancer development signaling pathways. PKD3 contains N-terminal tandem cysteine-rich zinc binding C1 (PKC conserved region 1), central PH (Pleckstrin Homology), and C-terminal catalytic kinase domains. This model corresponds to the first C1 domain. The C1 domain is a cysteine-rich zinc binding domain that does not bind DNA nor possess structural similarity to conventional zinc finger domains; it contains two separate Zn(2+)-binding sites.

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gi 321475457  896 RPHDWTLRRFGQLQNCDICQSKIW--LGEGLYCPRCGLIIHKKCFKRI 941
Cdd:cd20841     9 RPHTLYVHSYKAPTFCDYCGEMLWglVRQGLKCEGCGLNYHKRCAFKI 56