C-type lectin-like domain (CTLD) of the type found in natural killer cell receptors (NKRs); CLECT_NK_receptors_like: C-type lectin-like domain (CTLD) of the type found in natural killer cell receptors (NKRs), including proteins similar to oxidized low density lipoprotein (OxLDL) receptor (LOX-1), CD94, CD69, NKG2-A and -D, osteoclast inhibitory lectin (OCIL), dendritic cell-associated C-type lectin-1 (dectin-1), human myeloid inhibitory C-type lectin-like receptor (MICL), mast cell-associated functional antigen (MAFA), killer cell lectin-like receptors: subfamily F, member 1 (KLRF1) and subfamily B, member 1 (KLRB1), and lys49 receptors. CTLD refers to a domain homologous to the carbohydrate-recognition domains (CRDs) of the C-type lectins. NKRs are variously associated with activation or inhibition of natural killer (NK) cells. Activating NKRs stimulate cytolysis by NK cells of virally infected or transformed cells; inhibitory NKRs block cytolysis upon recognition of markers of healthy self cells. Most Lys49 receptors are inhibitory; some are stimulatory. OCIL inhibits NK cell function via binding to the receptor NKRP1D. Murine OCIL in addition to inhibiting NK cell function inhibits osteoclast differentiation. MAFA clusters with the type I Fc epsilon receptor (FcepsilonRI) and inhibits the mast cells secretory response to FcepsilonRI stimulus. CD72 is a negative regulator of B cell receptor signaling. NKG2D is an activating receptor for stress-induced antigens; human NKG2D ligands include the stress induced MHC-I homologs, MICA, MICB, and ULBP family of glycoproteins Several NKRs have a carbohydrate-binding capacity which is not mediated through calcium ions (e.g. OCIL binds a range of high molecular weight sulfated glycosaminoglycans including dextran sulfate, fucoidan, and gamma-carrageenan sugars). Dectin-1 binds fungal beta-glucans and in involved in the innate immune responses to fungal pathogens. MAFA binds saccharides having terminal alpha-D mannose residues in a calcium-dependent manner. LOX-1 is the major receptor for OxLDL in endothelial cells and thought to play a role in the pathology of atherosclerosis. Some NKRs exist as homodimers (e.g.Lys49, NKG2D, CD69, LOX-1) and some as heterodimers (e.g. CD94/NKG2A). Dectin-1 can function as a monomer in vitro.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962 115 CPNNWICHRNNCYQFFNEEKTWNQSQASCLSQNSSLLKIYSKEEQDFLKLVK--SYHWMGLVQIPANGSWQWEDGSSLSY 192
Cdd:cd03593   1 CPKDWICYGNKCYYFSMEKKTWNESKEACSSKNSSLLKIDDEEELEFLQSQIgsSSYWIGLSREKSEKPWKWIDGSPLNN 80

                        90       100       110
                ....*....|....*....|....*....|....*..
gi 47605962 193 NQLTLVEIPKGSCAVYgSSFKAYTEDCANLNTYICMK 229
Cdd:cd03593  81 LFNIRGSTKSGNCAYL-SSTGIYSEDCSTKKRWICEK 116

C-type lectin-like domain (CTLD) of the type found in natural killer cell receptors (NKRs); CLECT_NK_receptors_like: C-type lectin-like domain (CTLD) of the type found in natural killer cell receptors (NKRs), including proteins similar to oxidized low density lipoprotein (OxLDL) receptor (LOX-1), CD94, CD69, NKG2-A and -D, osteoclast inhibitory lectin (OCIL), dendritic cell-associated C-type lectin-1 (dectin-1), human myeloid inhibitory C-type lectin-like receptor (MICL), mast cell-associated functional antigen (MAFA), killer cell lectin-like receptors: subfamily F, member 1 (KLRF1) and subfamily B, member 1 (KLRB1), and lys49 receptors. CTLD refers to a domain homologous to the carbohydrate-recognition domains (CRDs) of the C-type lectins. NKRs are variously associated with activation or inhibition of natural killer (NK) cells. Activating NKRs stimulate cytolysis by NK cells of virally infected or transformed cells; inhibitory NKRs block cytolysis upon recognition of markers of healthy self cells. Most Lys49 receptors are inhibitory; some are stimulatory. OCIL inhibits NK cell function via binding to the receptor NKRP1D. Murine OCIL in addition to inhibiting NK cell function inhibits osteoclast differentiation. MAFA clusters with the type I Fc epsilon receptor (FcepsilonRI) and inhibits the mast cells secretory response to FcepsilonRI stimulus. CD72 is a negative regulator of B cell receptor signaling. NKG2D is an activating receptor for stress-induced antigens; human NKG2D ligands include the stress induced MHC-I homologs, MICA, MICB, and ULBP family of glycoproteins Several NKRs have a carbohydrate-binding capacity which is not mediated through calcium ions (e.g. OCIL binds a range of high molecular weight sulfated glycosaminoglycans including dextran sulfate, fucoidan, and gamma-carrageenan sugars). Dectin-1 binds fungal beta-glucans and in involved in the innate immune responses to fungal pathogens. MAFA binds saccharides having terminal alpha-D mannose residues in a calcium-dependent manner. LOX-1 is the major receptor for OxLDL in endothelial cells and thought to play a role in the pathology of atherosclerosis. Some NKRs exist as homodimers (e.g.Lys49, NKG2D, CD69, LOX-1) and some as heterodimers (e.g. CD94/NKG2A). Dectin-1 can function as a monomer in vitro.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962 115 CPNNWICHRNNCYQFFNEEKTWNQSQASCLSQNSSLLKIYSKEEQDFLKLVK--SYHWMGLVQIPANGSWQWEDGSSLSY 192
Cdd:cd03593   1 CPKDWICYGNKCYYFSMEKKTWNESKEACSSKNSSLLKIDDEEELEFLQSQIgsSSYWIGLSREKSEKPWKWIDGSPLNN 80

                        90       100       110
                ....*....|....*....|....*....|....*..
gi 47605962 193 NQLTLVEIPKGSCAVYgSSFKAYTEDCANLNTYICMK 229
Cdd:cd03593  81 LFNIRGSTKSGNCAYL-SSTGIYSEDCSTKKRWICEK 116

Lectin C-type domain; This family includes both long and short form C-type

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962   134 KTWNQSQASCLSQNSSLLKIYSKEEQDFL----KLVKSYHWMGLVQIPANGSWQWEDGSSLSYNQLTLVEIPKGS---CA 206
Cdd:pfam00059   2 KTWDEAREACRKLGGHLVSINSAEELDFLsstlKKSNKYFWIGLTDRKNEGTWKWVDGSPVNYTNWAPEPNNNGEnedCV 81

                          90       100
                  ....*....|....*....|....
gi 47605962   207 VYGSSF-KAYTEDCANLNTYICMK 229
Cdd:pfam00059  82 ELSSSSgKWNDENCNSKNPFVCEK 105

polycystin cation channel protein; The Polycystin Cation Channel (PCC) Family (TC 1.A.5) Polycystin is a huge protein of 4303aas. Its repeated leucine-rich (LRR) segment is found in many proteins. It contains 16 polycystic kidney disease (PKD) domains, one LDL-receptor class A domain, one C-type lectin family domain, and 16-18 putative TMSs in positions between residues 2200 and 4100. Polycystin-L has been shown to be a cation (Na+, K+ and Ca2+) channel that is activated by Ca2+. Two members of the PCC family (polycystin 1 and 2) are mutated in autosomal dominant polycystic kidney disease, and polycystin-L is deleted in mice with renal and retinal defects. Note: this model is restricted to the amino half.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962    115 CPNNWICHRNN--CYQFFNEEKTWNQSQASCLSQNSSLLKIY-SKEEQDFL--KLVKSYH---WMGL--VQIPANGSWQW 184
Cdd:TIGR00864  318 CPKDGEIFEENghCFQIVPEEAAWLDAQEQCLARAGAALAIVdNDALQNFLarKVTHSLDrgvWIGFsdVNGAEKGPAHQ 397

                           90       100       110       120
                   ....*....|....*....|....*....|....*....|....*..
gi 47605962    185 EDGSSLSYNQLTLVEIPKGS----CAVYGSSFKAYTEDCANLNTYIC 227
Cdd:TIGR00864  398 GEAFEAEECEEGLAGEPHPAraehCVRLDPRGQCNSDLCNAPHAYVC 444

C-type lectin-like domain (CTLD) of the type found in natural killer cell receptors (NKRs); CLECT_NK_receptors_like: C-type lectin-like domain (CTLD) of the type found in natural killer cell receptors (NKRs), including proteins similar to oxidized low density lipoprotein (OxLDL) receptor (LOX-1), CD94, CD69, NKG2-A and -D, osteoclast inhibitory lectin (OCIL), dendritic cell-associated C-type lectin-1 (dectin-1), human myeloid inhibitory C-type lectin-like receptor (MICL), mast cell-associated functional antigen (MAFA), killer cell lectin-like receptors: subfamily F, member 1 (KLRF1) and subfamily B, member 1 (KLRB1), and lys49 receptors. CTLD refers to a domain homologous to the carbohydrate-recognition domains (CRDs) of the C-type lectins. NKRs are variously associated with activation or inhibition of natural killer (NK) cells. Activating NKRs stimulate cytolysis by NK cells of virally infected or transformed cells; inhibitory NKRs block cytolysis upon recognition of markers of healthy self cells. Most Lys49 receptors are inhibitory; some are stimulatory. OCIL inhibits NK cell function via binding to the receptor NKRP1D. Murine OCIL in addition to inhibiting NK cell function inhibits osteoclast differentiation. MAFA clusters with the type I Fc epsilon receptor (FcepsilonRI) and inhibits the mast cells secretory response to FcepsilonRI stimulus. CD72 is a negative regulator of B cell receptor signaling. NKG2D is an activating receptor for stress-induced antigens; human NKG2D ligands include the stress induced MHC-I homologs, MICA, MICB, and ULBP family of glycoproteins Several NKRs have a carbohydrate-binding capacity which is not mediated through calcium ions (e.g. OCIL binds a range of high molecular weight sulfated glycosaminoglycans including dextran sulfate, fucoidan, and gamma-carrageenan sugars). Dectin-1 binds fungal beta-glucans and in involved in the innate immune responses to fungal pathogens. MAFA binds saccharides having terminal alpha-D mannose residues in a calcium-dependent manner. LOX-1 is the major receptor for OxLDL in endothelial cells and thought to play a role in the pathology of atherosclerosis. Some NKRs exist as homodimers (e.g.Lys49, NKG2D, CD69, LOX-1) and some as heterodimers (e.g. CD94/NKG2A). Dectin-1 can function as a monomer in vitro.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962 115 CPNNWICHRNNCYQFFNEEKTWNQSQASCLSQNSSLLKIYSKEEQDFLKLVK--SYHWMGLVQIPANGSWQWEDGSSLSY 192
Cdd:cd03593   1 CPKDWICYGNKCYYFSMEKKTWNESKEACSSKNSSLLKIDDEEELEFLQSQIgsSSYWIGLSREKSEKPWKWIDGSPLNN 80

                        90       100       110
                ....*....|....*....|....*....|....*..
gi 47605962 193 NQLTLVEIPKGSCAVYgSSFKAYTEDCANLNTYICMK 229
Cdd:cd03593  81 LFNIRGSTKSGNCAYL-SSTGIYSEDCSTKKRWICEK 116

Lectin C-type domain; This family includes both long and short form C-type

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962   134 KTWNQSQASCLSQNSSLLKIYSKEEQDFL----KLVKSYHWMGLVQIPANGSWQWEDGSSLSYNQLTLVEIPKGS---CA 206
Cdd:pfam00059   2 KTWDEAREACRKLGGHLVSINSAEELDFLsstlKKSNKYFWIGLTDRKNEGTWKWVDGSPVNYTNWAPEPNNNGEnedCV 81

                          90       100
                  ....*....|....*....|....
gi 47605962   207 VYGSSF-KAYTEDCANLNTYICMK 229
Cdd:pfam00059  82 ELSSSSgKWNDENCNSKNPFVCEK 105

C-type lectin-like domain (CTLD) of the type found in human dendritic cell (DC)-specific intercellular adhesion molecule 3-grabbing non-integrin (DC-SIGN) and the related receptor, DC-SIGN receptor (DC-SIGNR); CLECT_DC-SIGN_like: C-type lectin-like domain (CTLD) of the type found in human dendritic cell (DC)-specific intercellular adhesion molecule 3-grabbing non-integrin (DC-SIGN) and the related receptor, DC-SIGN receptor (DC-SIGNR). This group also contains proteins similar to hepatic asialoglycoprotein receptor (ASGP-R) and langerin in human. These proteins are type II membrane proteins with a CTLD ectodomain. CTLD refers to a domain homologous to the carbohydrate-recognition domains (CRDs) of the C-type lectins. DC-SIGN is thought to mediate the initial contact between dendritic cells and resting T cells, and may also mediate the rolling of DCs on epithelium. DC-SIGN and DC-SIGNR bind to oligosaccharides present on human tissues, as well as, on pathogens including parasites, bacteria, and viruses. DC-SIGN and DC-SIGNR bind to HIV enhancing viral infection of T cells. DC-SIGN and DC-SIGNR are homotetrameric, and contain four CTLDs stabilized by a coiled coil of alpha helices. The hepatic ASGP-R is an endocytic recycling receptor which binds and internalizes desialylated glycoproteins having a terminal galactose or N-acetylgalactosamine residues on their N-linked carbohydrate chains, via the clathrin-coated pit mediated endocytic pathway, and delivers them to lysosomes for degradation. It has been proposed that glycoproteins bearing terminal Sia (sialic acid) alpha2, 6GalNAc and Sia alpha2, 6Gal are endogenous ligands for ASGP-R and that ASGP-R participates in regulating the relative concentration of serum glycoproteins bearing alpha 2,6-linked Sia. The human ASGP-R is a hetero-oligomer composed of two subunits, both of which are found within this group. Langerin is expressed in a subset of dendritic leukocytes, the Langerhans cells (LC). Langerin induces the formation of Birbeck Granules (BGs) and associates with these BGs following internalization. Langerin binds, in a calcium-dependent manner, to glyco-conjugates containing mannose and related sugars mediating their uptake and degradation. Langerin molecules oligomerize as trimers with three CTLDs held together by a coiled-coil of alpha helices.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962 115 CPNNWICHRNNCYQFFNEEKTWNQSQASCLSQNSSLLKIYSKEEQDFLK---LVKSYHWMGLVQIPANGSWQWEDGSSLS 191
Cdd:cd03590   1 CPTNWKSFQSSCYFFSTEKKSWEESRQFCEDMGAHLVIINSQEEQEFISkilSGNRSYWIGLSDEETEGEWKWVDGTPLN 80

                ...
gi 47605962 192 YNQ 194
Cdd:cd03590  81 SSK 83

C-type lectin-like domain (CTLD) of the type found in Human REG-1 (lithostathine), REG-4, and avian eggshell-specific proteins: ansocalcin, structhiocalcin-1(SCA-1), and -2(SCA-2); CLECT_REG-1_like: C-type lectin-like domain (CTLD) of the type found in Human REG-1 (lithostathine), REG-4, and avian eggshell-specific proteins: ansocalcin, structhiocalcin-1(SCA-1), and -2(SCA-2). CTLD refers to a domain homologous to the carbohydrate-recognition domains (CRDs) of the C-type lectins. REG-1 is a proliferating factor which participates in various kinds of tissue regeneration including pancreatic beta-cell regeneration, regeneration of intestinal mucosa, regeneration of motor neurons, and perhaps in tissue regeneration of damaged heart. REG-1 may play a role on the pathophysiology of Alzheimer's disease and in the development of gastric cancers. Its expression is correlated with reduced survival from early-stage colorectal cancer. REG-1 also binds and aggregates several bacterial strains from the intestinal flora and it has been suggested that it is involved in the control of the intestinal bacterial ecosystem. Rat lithostathine has calcium carbonate crystal inhibitor activity in vitro. REG-IV is unregulated in pancreatic, gastric, hepatocellular, and prostrate adenocarcinomas. REG-IV activates the EGF receptor/Akt/AP-1 signaling pathway in colorectal carcinoma. Ansocalcin, SCA-1 and -2 are found at high concentration in the calcified egg shell layer of goose and ostrich, respectively and tend to form aggregates. Ansocalcin nucleates calcite crystal aggregates in vitro.

                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962 115 CPNNWICHRNNCYQFFNEEKTWNQSQASCLSQNSS--LLKIYSKEEQDFL-KLVKSYH------WMGLVQIPANGSWQWE 185
Cdd:cd03594   1 CPKGWLPYKGNCYGYFRQPLSWSDAELFCQKYGPGahLASIHSPAEAAAIaSLISSYQkayqpvWIGLHDPQQSRGWEWS 80

                        90       100       110       120       130
                ....*....|....*....|....*....|....*....|....*....|.
gi 47605962 186 DGSSLSY-----NQLTLveiPKGSCAVYGSSfKAYT----EDCANLNTYIC 227
Cdd:cd03594  81 DGSKLDYrswdrNPPYA---RGGYCAELSRS-TGFLkwndANCEERNPFIC 127

C-type lectin-like domain (CTLD) of the type found in chondroitin sulfate proteoglycan core proteins; CLECT_CSPGs: C-type lectin-like domain (CTLD) of the type found in chondroitin sulfate proteoglycan core proteins (CSPGs) in human and chicken aggrecan, frog brevican, and zebra fish dermacan. CTLD refers to a domain homologous to the carbohydrate-recognition domains (CRDs) of the C-type lectins. In cartilage, aggrecan forms cartilage link protein stabilized aggregates with hyaluronan (HA). These aggregates contribute to the tissue's load bearing properties. Aggregates having other CSPGs substituting for aggrecan may contribute to the structural integrity of many different tissues. Xenopus brevican is expressed in the notochord and the brain during early embryogenesis. Zebra fish dermacan is expressed in dermal bones and may play a role in dermal bone development. CSPGs do contain LINK domain(s) which bind HA. These LINK domains are considered by one classification system to be a variety of CTLD, but are omitted from this hierarchical classification based on insignificant sequence similarity.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 47605962 115 CPNNWICHRNNCYQFFNEEKTWNQSQASCLSQNSSLLKIYSKEEQDFL-KLVKSYHWMGLVQIPANGSWQWEDGSSLSY 192
Cdd:cd03588   1 CEEGWDKFQGHCYRHFPDRETWEDAERRCREQQGHLSSIVTPEEQEFVnNNAQDYQWIGLNDRTIEGDFRWSDGHPLQF 79

A bacterial subgroup of the C-type lectin-like (CTLD) domain; a subgroup of bacterial protein domains homologous to the carbohydrate-recognition domains (CRDs) of the C-type lectins; CLECT_VCBS: A bacterial subgroup of the C-type lectin-like (CTLD) domain; a subgroup of bacterial protein domains homologous to the carbohydrate-recognition domains (CRDs) of the C-type lectins. Many CTLDs are calcium-dependent carbohydrate binding modules; other CTLDs bind protein ligands, lipids, and inorganic surfaces including CaCO3 and ice. Bacterial CTLDs within this group are functionally uncharacterized. Animal C-type lectins are involved in such functions as extracellular matrix organization, endocytosis, complement activation, pathogen recognition, and cell-cell interactions. CTLDs may bind a variety of carbohydrate ligands including mannose, N-acetylglucosamine, galactose, N-acetylgalactosamine, and fucose. CTLDs associate with each other through several different surfaces to form dimers, trimers, or tetramers from which ligand-binding sites project in different orientations. In some CTLDs a loop extends to the adjoining domain to form a loop-swapped dimer.

                        10        20        30        40        50        60        70
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962 127 YQFFNEEKTWNQSQASCLSQNSSLLKIYSKEEQDFL-KLVKSYH--WMGLVQIPANGSWQWEDGSSLSYN 193
Cdd:cd03603   3 YKFVDGGMTWEAAQTLAESLGGHLVTINSAEENDWLlSNFGGYGasWIGASDAATEGTWKWSDGEESTYT 72

C-type lectin protein; Provisional

                         10        20        30        40        50
                 ....*....|....*....|....*....|....*....|....*....|....*...
gi 47605962  115 CPNNWICHRNNCYQFFNEEKTWNQSQASCLSQNSSLLKIYSKEEQDFL-KLVKSYHWM 171
Cdd:PHA02867  49 CPDEWIGYNSKCYYFTINETNWNDSKKLCDVMDSSLIRFDNIETLNFVsRYGKGSYWI 106

C-type lectin-like protein; Provisional

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 47605962  115 CPNNWICHRNNCYqFFNEEKTWNQSQA-SCLSQNSSLLKIYSKEEqdfLKLVKSY-----HWMGLVQIPAngswqWEDGS 188
Cdd:PHA03097  46 CRSGWVGYNNKCY-TFSENITNKHLAIeRCADMDGILTLIDDQKE---VLFVSRYkggqdLWIGIEKKKG-----DDDDR 116

                         90       100       110       120
                 ....*....|....*....|....*....|....*....|...
gi 47605962  189 SLSYNqltLVEIPK-GSCAVYgSSFKAYTEDCANLNTYICMKR 230
Cdd:PHA03097 117 EVLDK---VVKPPKsGKCAYL-KDKTIISSNCNATKGWICFDR 155