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Conserved domains on  [gi|1039780017|ref|XP_017167815|]
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carcinoembryonic antigen-related cell adhesion molecule 18 isoform X1 [Mus musculus]

Protein Classification

Ig_CEACAM_D1 and Ig domain-containing protein( domain architecture ID 10146358)

Ig_CEACAM_D1 and Ig domain-containing protein

Graphical summary

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List of domain hits

 Name Accession Description Interval E-value
IgV_CEACAM_D1 cd05774
First immunoglobulin (Ig)-like domain of carcinoembryonic antigen (CEA) related cell adhesion ...
 68-170 6.60e-36

First immunoglobulin (Ig)-like domain of carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM); The members here are composed of the immunoglobulin (Ig)-like domain 1 in carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) proteins. The CEA family is a group of anchored or secreted glycoproteins, expressed by epithelial cells, leukocytes, endothelial cells, and placenta. The CEA family is divided into the CEACAM and pregnancy-specific glycoprotein (PSG) subfamilies. This group represents the CEACAM subfamily. CEACAM1 has many important cellular functions: it is a cell adhesion molecule and a signaling molecule that regulates the growth of tumor cells, an angiogenic factor, and a receptor for bacterial and viral pathogens, including mouse hepatitis virus (MHV). In mice, four isoforms of CEACAM1 generated by alternative splicing have either two (D1, D4) or four (D1-D4) Ig-like domains on the cell surface.


:

Pssm-ID: 409430  Cd Length: 105  Bit Score: 127.39  E-value: 6.60e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1039780017  68 IFISPDSLLGVEKYRTILTLENVPEDVLEYSWYRGKDNSTENMIFSYKPP-NTRHPGPSYSGRENVTRAGSLVVRMSAVN 146
Cdd:cd05774     1 LTIELVPPQVAEGENVLLLVHNLPENLLAYAWYKGKTVSPNFLIASYIIStNSSTPGPAYSGRETIYPNGSLLIQNVTQK 80

                          90       100
                  ....*....|....*....|....*
gi 1039780017 147 DTGYYTVEVDTSN-ETQRATGWLQI 170
Cdd:cd05774    81 DTGFYTLQTITADlQTEQASVHLQV 105
Ig super family cl11960
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
 176-237 1.57e-10

Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


The actual alignment was detected with superfamily member cd05740:

Pssm-ID: 472250 [Multi-domain]  Cd Length: 89  Bit Score: 57.40  E-value: 1.57e-10
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1039780017 176 NPGISANTSALVEGMDSVVAKCL--TNSSNISWYVNFVPTSGSNRMTISPDGKTLIIHRVSRYD 237
Cdd:cd05740     1 KPFISSNNSNPVEDKDAVTLTCEpeTQNTSYLWWFNGQSLPVTPRLTLSNGNRTLTLLNVTRED 64
Ig super family cl11960
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
 283-338 1.90e-07

Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


The actual alignment was detected with superfamily member cd05728:

Pssm-ID: 472250 [Multi-domain]  Cd Length: 85  Bit Score: 48.37  E-value: 1.90e-07
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1039780017 283 ADIGSSVQLECNCFSKPEPRYHWIHNGSFLS------IPENNMTLPSLSWEQMGSYRCVVEN 338
Cdd:cd05728    11 ADIGSSLRWECKASGNPRPAYRWLKNGQPLAsenrieVEAGDLRITKLSLSDSGMYQCVAEN 72
 
Name Accession Description Interval E-value
IgV_CEACAM_D1 cd05774
First immunoglobulin (Ig)-like domain of carcinoembryonic antigen (CEA) related cell adhesion ...
 68-170 6.60e-36

First immunoglobulin (Ig)-like domain of carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM); The members here are composed of the immunoglobulin (Ig)-like domain 1 in carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) proteins. The CEA family is a group of anchored or secreted glycoproteins, expressed by epithelial cells, leukocytes, endothelial cells, and placenta. The CEA family is divided into the CEACAM and pregnancy-specific glycoprotein (PSG) subfamilies. This group represents the CEACAM subfamily. CEACAM1 has many important cellular functions: it is a cell adhesion molecule and a signaling molecule that regulates the growth of tumor cells, an angiogenic factor, and a receptor for bacterial and viral pathogens, including mouse hepatitis virus (MHV). In mice, four isoforms of CEACAM1 generated by alternative splicing have either two (D1, D4) or four (D1-D4) Ig-like domains on the cell surface.


Pssm-ID: 409430  Cd Length: 105  Bit Score: 127.39  E-value: 6.60e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1039780017  68 IFISPDSLLGVEKYRTILTLENVPEDVLEYSWYRGKDNSTENMIFSYKPP-NTRHPGPSYSGRENVTRAGSLVVRMSAVN 146
Cdd:cd05774     1 LTIELVPPQVAEGENVLLLVHNLPENLLAYAWYKGKTVSPNFLIASYIIStNSSTPGPAYSGRETIYPNGSLLIQNVTQK 80

                          90       100
                  ....*....|....*....|....*
gi 1039780017 147 DTGYYTVEVDTSN-ETQRATGWLQI 170
Cdd:cd05774    81 DTGFYTLQTITADlQTEQASVHLQV 105
IgI_hCEACAM_2_4_6_like cd05740
Immunoglobulin (Ig)-like domain of human carcinoembryonic antigen (CEA) related cell adhesion ...
 176-237 1.57e-10

Immunoglobulin (Ig)-like domain of human carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) domains 2, 4, and 6, and similar domains; The members here are composed of the second, fourth, and sixth immunoglobulin (Ig)-like domains in human carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) protein subfamily. The CEA family is a group of anchored or secreted glycoproteins expressed by epithelial cells, leukocytes, endothelial cells, and placenta. The CEA family is divided into the CEACAM and pregnancy-specific glycoprotein (PSG) subfamilies. This group represents the CEACAM subfamily. CEACAM1 has many important cellular functions; it is a cell adhesion molecule and a signaling molecule that regulates the growth of tumor cells, an angiogenic factor, and a receptor for bacterial and viral pathogens, including mouse hepatitis virus (MHV). In mice, four isoforms of CEACAM1 generated by alternative splicing have either two [D1, D4] or four [D1-D4] Ig-like domains on the cell surface.


Pssm-ID: 409402 [Multi-domain]  Cd Length: 89  Bit Score: 57.40  E-value: 1.57e-10
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1039780017 176 NPGISANTSALVEGMDSVVAKCL--TNSSNISWYVNFVPTSGSNRMTISPDGKTLIIHRVSRYD 237
Cdd:cd05740     1 KPFISSNNSNPVEDKDAVTLTCEpeTQNTSYLWWFNGQSLPVTPRLTLSNGNRTLTLLNVTRED 64
Ig4_Contactin-2-like cd05728
Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The ...
 283-338 1.90e-07

Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The members here are composed of the fourth Ig domain of the neural cell adhesion molecule contactin-2. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. Contactin-2 (also called TAG-1, axonin-1) facilitates cell adhesion by homophilic binding between molecules in apposed membranes. The first four Ig domains form the intermolecular binding fragment which arranges as a compact U-shaped module by contacts between Ig domains 1 and 4, and domains 2 and 3. It has been proposed that a linear zipper-like array forms, from contactin-2 molecules alternatively provided by the two apposed membranes.


Pssm-ID: 143205 [Multi-domain]  Cd Length: 85  Bit Score: 48.37  E-value: 1.90e-07
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1039780017 283 ADIGSSVQLECNCFSKPEPRYHWIHNGSFLS------IPENNMTLPSLSWEQMGSYRCVVEN 338
Cdd:cd05728    11 ADIGSSLRWECKASGNPRPAYRWLKNGQPLAsenrieVEAGDLRITKLSLSDSGMYQCVAEN 72
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
 282-338 2.65e-07

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 47.95  E-value: 2.65e-07
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1039780017 282 TADIGSSVQLECNCFSKPEPRYHWIHNGS----------FLSIPENNMTLPSLSWEQMGSYRCVVEN 338
Cdd:pfam13927  12 TVREGETVTLTCEATGSPPPTITWYKNGEpissgstrsrSLSGSNSTLTISNVTRSDAGTYTCVASN 78
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
 279-351 8.56e-07

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 46.73  E-value: 8.56e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1039780017  279 GVLTADIGSSVQLECNCFSKPEPRYHWIHNG-SFLSIPEN----------NMTLPSLSWEQMGSYRCVVENPETQLTFYR 347
Cdd:smart00410   2 PSVTVKEGESVTLSCEASGSPPPEVTWYKQGgKLLAESGRfsvsrsgstsTLTISNVTPEDSGTYTCAATNSSGSASSGT 81


                   ....
gi 1039780017  348 DVTI 351
Cdd:smart00410  82 TLTV 85
V-set pfam07686
Immunoglobulin V-set domain; This domain is found in antibodies as well as neural protein P0 ...
 70-160 1.24e-03

Immunoglobulin V-set domain; This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.


Pssm-ID: 462230  Cd Length: 109  Bit Score: 38.21  E-value: 1.24e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1039780017  70 ISPDSLLGVEKYRTILT---LENVPEDVLEYSWYRGK-DNSTENMIFSYKPP-NTRHPGPSYSGRENVTRA-GSLVVRMS 143
Cdd:pfam07686   1 QTPREVTVALGGSVTLPctySSSMSEASTSVYWYRQPpGKGPTFLIAYYSNGsEEGVKKGRFSGRGDPSNGdGSLTIQNL 80

                          90
                  ....*....|....*..
gi 1039780017 144 AVNDTGYYTVEVDTSNE 160
Cdd:pfam07686  81 TLSDSGTYTCAVIPSGE 97
 
Name Accession Description Interval E-value
IgV_CEACAM_D1 cd05774
First immunoglobulin (Ig)-like domain of carcinoembryonic antigen (CEA) related cell adhesion ...
 68-170 6.60e-36

First immunoglobulin (Ig)-like domain of carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM); The members here are composed of the immunoglobulin (Ig)-like domain 1 in carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) proteins. The CEA family is a group of anchored or secreted glycoproteins, expressed by epithelial cells, leukocytes, endothelial cells, and placenta. The CEA family is divided into the CEACAM and pregnancy-specific glycoprotein (PSG) subfamilies. This group represents the CEACAM subfamily. CEACAM1 has many important cellular functions: it is a cell adhesion molecule and a signaling molecule that regulates the growth of tumor cells, an angiogenic factor, and a receptor for bacterial and viral pathogens, including mouse hepatitis virus (MHV). In mice, four isoforms of CEACAM1 generated by alternative splicing have either two (D1, D4) or four (D1-D4) Ig-like domains on the cell surface.


Pssm-ID: 409430  Cd Length: 105  Bit Score: 127.39  E-value: 6.60e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1039780017  68 IFISPDSLLGVEKYRTILTLENVPEDVLEYSWYRGKDNSTENMIFSYKPP-NTRHPGPSYSGRENVTRAGSLVVRMSAVN 146
Cdd:cd05774     1 LTIELVPPQVAEGENVLLLVHNLPENLLAYAWYKGKTVSPNFLIASYIIStNSSTPGPAYSGRETIYPNGSLLIQNVTQK 80

                          90       100
                  ....*....|....*....|....*
gi 1039780017 147 DTGYYTVEVDTSN-ETQRATGWLQI 170
Cdd:cd05774    81 DTGFYTLQTITADlQTEQASVHLQV 105
IgV_CEACAM_like cd05741
Immunoglobulin (Ig)-like domain of carcinoembryonic antigen (CEA) related cell adhesion ...
 71-170 3.09e-13

Immunoglobulin (Ig)-like domain of carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) and similar proteins; The members here are composed of the immunoglobulin (Ig)-like domain in carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) and related domains. The CEA family is a group of anchored or secreted glycoproteins, expressed by epithelial cells, leukocytes, endothelial cells and placenta. The CEA family is divided into the CEACAM and pregnancy-specific glycoprotein (PSG) subfamilies. This group represents the CEACAM subfamily. CEACAM1 has many important cellular functions: it is a cell adhesion molecule and a signaling molecule that regulates the growth of tumor cells, an angiogenic factor, and a receptor for bacterial and viral pathogens, including mouse hepatitis virus (MHV). In mice, four isoforms of CEACAM1 generated by alternative splicing have either two (D1, D4) or four (D1-D4) Ig-like domains on the cell surface. This family corresponds to the D1 Ig-like domain. Also belonging to this group is the N-terminal immunoglobulin (Ig)-like domain of the signaling lymphocyte activation molecule (SLAM) family, CD84-like family. The SLAM family is a group of immune-cell specific receptors that can regulate both adaptive and innate immune responses. SLAM family proteins are organized as an extracellular domain with having two or four Ig-like domains, a single transmembrane segment, and a cytoplasmic region having Tyr-based motifs. The extracellular domain is organized as a membrane-distal Ig variable (IgV) domain that is responsible for ligand recognition and a membrane-proximal truncated Ig constant-2 (IgC2) domain.


Pssm-ID: 409403  Cd Length: 102  Bit Score: 65.23  E-value: 3.09e-13
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1039780017  71 SPDSLLGVEKYRTILTLENVPEDVLEYSWYRGKDNSTENMIFSYKP-PNTRHPGPSYSGRENVTRAGSLVVRMSAVNDTG 149
Cdd:cd05741     1 SSEQFYGAEGKNVLLLVPNLQTPLKSVSWYKGKQVSRNDEIAEYENsSDEFRAGSAFSGREYIYTNGSLLIQNITLSDTG 80

                          90       100
                  ....*....|....*....|..
gi 1039780017 150 YYTVEV-DTSNETQRATGWLQI 170
Cdd:cd05741    81 FYTLEStNIGGKTESATFQLHV 102
IgI_hCEACAM_2_4_6_like cd05740
Immunoglobulin (Ig)-like domain of human carcinoembryonic antigen (CEA) related cell adhesion ...
 176-237 1.57e-10

Immunoglobulin (Ig)-like domain of human carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) domains 2, 4, and 6, and similar domains; The members here are composed of the second, fourth, and sixth immunoglobulin (Ig)-like domains in human carcinoembryonic antigen (CEA) related cell adhesion molecule (CEACAM) protein subfamily. The CEA family is a group of anchored or secreted glycoproteins expressed by epithelial cells, leukocytes, endothelial cells, and placenta. The CEA family is divided into the CEACAM and pregnancy-specific glycoprotein (PSG) subfamilies. This group represents the CEACAM subfamily. CEACAM1 has many important cellular functions; it is a cell adhesion molecule and a signaling molecule that regulates the growth of tumor cells, an angiogenic factor, and a receptor for bacterial and viral pathogens, including mouse hepatitis virus (MHV). In mice, four isoforms of CEACAM1 generated by alternative splicing have either two [D1, D4] or four [D1-D4] Ig-like domains on the cell surface.


Pssm-ID: 409402 [Multi-domain]  Cd Length: 89  Bit Score: 57.40  E-value: 1.57e-10
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1039780017 176 NPGISANTSALVEGMDSVVAKCL--TNSSNISWYVNFVPTSGSNRMTISPDGKTLIIHRVSRYD 237
Cdd:cd05740     1 KPFISSNNSNPVEDKDAVTLTCEpeTQNTSYLWWFNGQSLPVTPRLTLSNGNRTLTLLNVTRED 64
Ig4_Contactin-2-like cd05728
Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The ...
 283-338 1.90e-07

Fourth Ig domain of the neural cell adhesion molecule contactin-2, and similar domains; The members here are composed of the fourth Ig domain of the neural cell adhesion molecule contactin-2. Contactins are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. Contactin-2 (also called TAG-1, axonin-1) facilitates cell adhesion by homophilic binding between molecules in apposed membranes. The first four Ig domains form the intermolecular binding fragment which arranges as a compact U-shaped module by contacts between Ig domains 1 and 4, and domains 2 and 3. It has been proposed that a linear zipper-like array forms, from contactin-2 molecules alternatively provided by the two apposed membranes.


Pssm-ID: 143205 [Multi-domain]  Cd Length: 85  Bit Score: 48.37  E-value: 1.90e-07
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 1039780017 283 ADIGSSVQLECNCFSKPEPRYHWIHNGSFLS------IPENNMTLPSLSWEQMGSYRCVVEN 338
Cdd:cd05728    11 ADIGSSLRWECKASGNPRPAYRWLKNGQPLAsenrieVEAGDLRITKLSLSDSGMYQCVAEN 72
Ig_3 pfam13927
Immunoglobulin domain; This family contains immunoglobulin-like domains.
 282-338 2.65e-07

Immunoglobulin domain; This family contains immunoglobulin-like domains.


Pssm-ID: 464046 [Multi-domain]  Cd Length: 78  Bit Score: 47.95  E-value: 2.65e-07
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1039780017 282 TADIGSSVQLECNCFSKPEPRYHWIHNGS----------FLSIPENNMTLPSLSWEQMGSYRCVVEN 338
Cdd:pfam13927  12 TVREGETVTLTCEATGSPPPTITWYKNGEpissgstrsrSLSGSNSTLTISNVTRSDAGTYTCVASN 78
IG_like smart00410
Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.
 279-351 8.56e-07

Immunoglobulin like; IG domains that cannot be classified into one of IGv1, IGc1, IGc2, IG.


Pssm-ID: 214653 [Multi-domain]  Cd Length: 85  Bit Score: 46.73  E-value: 8.56e-07
                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1039780017  279 GVLTADIGSSVQLECNCFSKPEPRYHWIHNG-SFLSIPEN----------NMTLPSLSWEQMGSYRCVVENPETQLTFYR 347
Cdd:smart00410   2 PSVTVKEGESVTLSCEASGSPPPEVTWYKQGgKLLAESGRfsvsrsgstsTLTISNVTPEDSGTYTCAATNSSGSASSGT 81


                   ....
gi 1039780017  348 DVTI 351
Cdd:smart00410  82 TLTV 85
Ig cd00096
Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found ...
 289-339 2.44e-05

Immunoglobulin domain; The members here are composed of the immunoglobulin (Ig) domain found in the Ig superfamily. The Ig superfamily is a heterogenous group of proteins, built on a common fold comprised of a sandwich of two beta sheets. Members of this group are components of immunoglobulin, neuroglia, cell surface glycoproteins, including T-cell receptors, CD2, CD4, CD8, and membrane glycoproteins, including butyrophilin and chondroitin sulfate proteoglycan core protein. A predominant feature of most Ig domains is a disulfide bridge connecting the two beta-sheets with a tryptophan residue packed against the disulfide bond. Ig superfamily (IgSF) domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. Typically, the V-set domains have A, B, E, and D strands in one sheet and A', G, F, C, C' and C" in the other. The structures in C1-set are smaller than those in the V-set; they have one beta sheet that is formed by strands A, B, E, and D and the other by strands G, F, C, and C'. Moreover, a C1-set Ig domain contains a short C' strand (three residues) and lacks A' and C" strand. Unlike other Ig domain sets, C2-set structures do not have a D strand. Like the V-set Ig domains, members of the I-set have a discontinuous A strand, but lack a C" strand.


Pssm-ID: 409353 [Multi-domain]  Cd Length: 70  Bit Score: 41.93  E-value: 2.44e-05
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1039780017 289 VQLECNCFSKPEPRYHWIHNGS----------FLSIPENNMTLPSLSWEQMGSYRCVVENP 339
Cdd:cd00096     1 VTLTCSASGNPPPTITWYKNGKplppssrdsrRSELGNGTLTISNVTLEDSGTYTCVASNS 61
Ig_2 pfam13895
Immunoglobulin domain; This domain contains immunoglobulin-like domains.
 282-352 2.48e-05

Immunoglobulin domain; This domain contains immunoglobulin-like domains.


Pssm-ID: 464026 [Multi-domain]  Cd Length: 79  Bit Score: 42.38  E-value: 2.48e-05
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 1039780017 282 TADIGSSVQLECNCFSKPEPRYHWIHNGSFLSiPENNMTLPSLSWEQMGSYRCVVENPETQLTfYRDVTIQ 352
Cdd:pfam13895  10 VVTEGEPVTLTCSAPGNPPPSYTWYKDGSAIS-SSPNFFTLSVSAEDSGTYTCVARNGRGGKV-SNPVELT 78
IgI_4_hemolin-like cd20978
Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set ...
 274-338 1.51e-04

Fourth immunoglobulin (Ig)-like domain of hemolin, and similar domains; a member of the I-set of IgSF domains; The members here are composed of the fourth immunoglobulin (Ig)-like domain of hemolin and similar proteins. Hemolin, an insect immunoglobulin superfamily (IgSF) member containing four Ig-like domains, is a lipopolysaccharide-binding immune protein induced during bacterial infection. Hemolin shares significant sequence similarity with the first four Ig-like domains of the transmembrane cell adhesion molecules (CAMs) of the L1 family. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. The fourth Ig-like domain of hemolin is a member of the I-set Ig domains, having A-B-E-D strands in one beta-sheet and A'-G-F-C-C' in the other. Like the V-set domains, members of the I-set have a discontinuous A strand but lack a C" strand. I-set domains are found in several cell adhesion molecules (such as VCAM, ICAM, and MADCAM), and are also present in numerous other diverse protein families, including several tyrosine-protein kinase receptors, the muscle proteins titin, telokin, and twitchin, the neuronal adhesion molecule axonin-1, and the signaling molecule semaphorin 4D that is involved in axonal guidance, immune function and angiogenesis.


Pssm-ID: 409570 [Multi-domain]  Cd Length: 88  Bit Score: 40.45  E-value: 1.51e-04
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 1039780017 274 PYFFAG---VLTADIGSSVQLECNCFSKPEPRYHWIHNGSFLS-------IPENNMTLPSLSWEQMGSYRCVVEN 338
Cdd:cd20978     1 PKFIQKpekNVVVKGGQDVTLPCQVTGVPQPKITWLHNGKPLQgpmeratVEDGTLTIINVQPEDTGYYGCVATN 75
IgC2_3_Dscam cd20957
Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; ...
 280-339 2.18e-04

Third immunoglobulin domain of the Drosophila melanogaster Dscam protein, and similar domains; a member of the Constant 2 (C2)-set of IgSF domains; The members here are composed of the third immunoglobulin domain of the Drosophila melanogaster Down syndrome cell adhesion molecule (DSCAM) protein and similar proteins. Down syndrome cell adhesion molecule (DSCAM) is a cell adhesion molecule that plays critical roles in neural development, including axon guidance and branching, axon target recognition, self-avoidance and synaptic formation. DSCAM belongs to the immunoglobulin superfamily and contributes to defects in the central nervous system in Down syndrome patients. Vertebrate DSCAMs differ from Drosophila Dscam1 in that they lack the extensive alternative splicing that occurs in the insect gene. Drosophila melanogaster Dscam has 38,016 isoforms generated by the alternative splicing of four variable exon clusters, which allows every neuron in the fly to display a distinctive set of Dscam proteins on its cell surface. Drosophila Dscam1 is a cell-surface protein that plays important roles in neural development and axon tiling of neurons. It is shown that thousands of isoforms bind themselves through specific homophilic (self-binding) interactions, a process which mediates cellular self-recognition. Drosophila Dscam2 is also alternatively spliced and plays a key role in the development of two visual system neurons, monopolar cells L1 and L2. IgSF domains can be divided into 4 main classes based on their structures and sequences: the Variable (V), Constant 1 (C1), Constant 2 (C2), and Intermediate (I) sets. This group belongs to the C2-set of IgSF domains, having A, B, and E strands in one beta-sheet and A', G, F, C, and C' in the other. Unlike other Ig domain sets, the C2-set lacks the D strand.


Pssm-ID: 409549 [Multi-domain]  Cd Length: 88  Bit Score: 39.82  E-value: 2.18e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1039780017 280 VLTADIGSSVQLECNCFSKPEPRYHWIHNGSFLS-------IPENNMTLPSLSWEQMGSYRCVVENP 339
Cdd:cd20957    10 VQTVDFGRTAVFNCSVTGNPIHTVLWMKDGKPLGhssrvqiLSEDVLVIPSVKREDKGMYQCFVRND 76
Ig1_FcgammaR_like cd05752
First immunoglobulin (Ig)-like domain of Fcgamma-receptors (FcgammaRs), and similar domains; ...
 286-334 2.75e-04

First immunoglobulin (Ig)-like domain of Fcgamma-receptors (FcgammaRs), and similar domains; The members here are composed of the first immunoglobulin (Ig)-like domain of Fcgamma-receptors (FcgammaRs). Interactions between IgG and FcgammaR are important to the initiation of cellular and humoral response. IgG binding to FcgammaR leads to a cascade of signals and ultimately to functions such as antibody-dependent-cellular-cytotoxicity (ADCC), endocytosis, phagocytosis, release of inflammatory mediators, etc. FcgammaR has two Ig-like domains. This group also contains FcepsilonRI which binds IgE with high affinity.


Pssm-ID: 409410 [Multi-domain]  Cd Length: 79  Bit Score: 39.27  E-value: 2.75e-04
                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1039780017 286 GSSVQLECNCFSKPEP-RYHWIHNGSFLSIPENNMTLPSLSWEQMGSYRC 334
Cdd:cd05752    15 GEKVTLTCQGFYSPEQnSTQWYHNGTLISSTSSSYRIVAATVNDSGEYRC 64
IgI_3_Contactin cd04968
Third immunoglobulin (Ig) domain of contactin; member of the I-set of Ig superfamily (IgSF) ...
 276-338 6.89e-04

Third immunoglobulin (Ig) domain of contactin; member of the I-set of Ig superfamily (IgSF) domains; The members here are composed of the third immunoglobulin (Ig) domain of contactins. Contactins are neural cell adhesion molecules and are comprised of six Ig domains followed by four fibronectin type III (FnIII) domains anchored to the membrane by glycosylphosphatidylinositol. The first four Ig domains form the intermolecular binding fragment, which arranges as a compact U-shaped module via contacts between Ig domains 1 and 4, and between Ig domains 2 and 3. Contactin-2 (TAG-1, axonin-1) may play a part in the neuronal processes of neurite outgrowth, axon guidance and fasciculation, and neuronal migration. This group also includes contactin-1 and contactin-5. The different contactins show different expression patterns in the central nervous system. During development and in adulthood, contactin-2 is transiently expressed in subsets of central and peripheral neurons. Contactin-5 is expressed specifically in the rat postnatal nervous system, peaking at about 3 weeks postnatal, and a lack of contactin-5 (NB-2) results in an impairment of neuronal activity in the rat auditory system. Contactin-5 is highly expressed in the adult human brain in the occipital lobe and in the amygdala. Contactin-1 is differentially expressed in tumor tissues and may, through a RhoA mechanism, facilitate invasion and metastasis of human lung adenocarcinoma. This group belongs to the I-set of IgSF domains.


Pssm-ID: 409357 [Multi-domain]  Cd Length: 88  Bit Score: 38.30  E-value: 6.89e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 1039780017 276 FFAGVLTAdIGSSVQLECNCFSKPEPRYHWIH-NGS-----FLSIPENNMTLPSLSWEQMGSYRCVVEN 338
Cdd:cd04968     7 FPADTYAL-KGQTVTLECFALGNPVPQIKWRKvDGSpssqwEITTSEPVLEIPNVQFEDEGTYECEAEN 74
IgI_2_FGFRL1-like cd05856
Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1 ...
 280-338 8.69e-04

Second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor_like-1(FGFRL1); member of the I-set of IgSF domains; The members here are composed of the second immunoglobulin (Ig)-like domain of fibroblast growth factor (FGF) receptor like-1(FGFRL1). FGFRL1 is comprised of a signal peptide, three extracellular Ig-like modules, a transmembrane segment, and a short intracellular domain. FGFRL1 is expressed preferentially in skeletal tissues. Similar to FGF receptors, the expressed protein interacts specifically with heparin and with FGF2. FGFRL1 does not have a protein tyrosine kinase domain at its C-terminus; neither does its cytoplasmic domain appear to interact with a signaling partner. It has been suggested that FGFRL1 may not have any direct signaling function, but instead acts as a decoy receptor trapping FGFs and preventing them from binding other receptors.


Pssm-ID: 409442  Cd Length: 92  Bit Score: 38.30  E-value: 8.69e-04
                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1039780017 280 VLTADIGSSVQLECNCFSKPEPRYHWIHNGSFLSIPEN--------NMTLPSLSWEQMGSYRCVVEN 338
Cdd:cd05856    13 VIARPVGSSVRLKCVASGNPRPDITWLKDNKPLTPPEIgenkkkkwTLSLKNLKPEDSGKYTCHVSN 79
V-set pfam07686
Immunoglobulin V-set domain; This domain is found in antibodies as well as neural protein P0 ...
 70-160 1.24e-03

Immunoglobulin V-set domain; This domain is found in antibodies as well as neural protein P0 and CTL4 amongst others.


Pssm-ID: 462230  Cd Length: 109  Bit Score: 38.21  E-value: 1.24e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1039780017  70 ISPDSLLGVEKYRTILT---LENVPEDVLEYSWYRGK-DNSTENMIFSYKPP-NTRHPGPSYSGRENVTRA-GSLVVRMS 143
Cdd:pfam07686   1 QTPREVTVALGGSVTLPctySSSMSEASTSVYWYRQPpGKGPTFLIAYYSNGsEEGVKKGRFSGRGDPSNGdGSLTIQNL 80

                          90
                  ....*....|....*..
gi 1039780017 144 AVNDTGYYTVEVDTSNE 160
Cdd:pfam07686  81 TLSDSGTYTCAVIPSGE 97
I-set pfam07679
Immunoglobulin I-set domain;
281-344 2.06e-03

Immunoglobulin I-set domain;


Pssm-ID: 400151 [Multi-domain]  Cd Length: 90  Bit Score: 37.24  E-value: 2.06e-03
                          10        20        30        40        50        60        70
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....
gi 1039780017 281 LTADIGSSVQLECNCFSKPEPRYHWIHNGSFLSI--------PENNMTL--PSLSWEQMGSYRCVVENPETQLT 344
Cdd:pfam07679  10 VEVQEGESARFTCTVTGTPDPEVSWFKDGQPLRSsdrfkvtyEGGTYTLtiSNVQPDDSGKYTCVATNSAGEAE 83
 
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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