#ID(s) interactor A ID(s) interactor B Alt. ID(s) interactor A Alt. ID(s) interactor B Alias(es) interactor A Alias(es) interactor B Interaction detection method(s) Publication 1st author(s) Publication Identifier(s) Taxid interactor A Taxid interactor B Interaction type(s) Source database(s) Interaction identifier(s) Confidence value(s) Expansion method(s) Biological role(s) interactor A Biological role(s) interactor B Experimental role(s) interactor A Experimental role(s) interactor B Type(s) interactor A Type(s) interactor B Xref(s) interactor A Xref(s) interactor B Interaction Xref(s) Annotation(s) interactor A Annotation(s) interactor B Interaction annotation(s) Host organism(s) Interaction parameter(s) Creation date Update date Checksum(s) interactor A Checksum(s) interactor B Interaction Checksum(s) Negative Feature(s) interactor A Feature(s) interactor B Stoichiometry(s) interactor A Stoichiometry(s) interactor B Identification method participant A Identification method participant B uniprotkb:P02741-PRO_0000023526 matrixdb:MULT_82_human intact:EBI-22033103 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:"MI:0107"(surface plasmon resonance) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079081|imex:IM-27413-1 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0498"(prey) psi-mi:"MI:0496"(bait) psi-mi:"MI:0326"(protein) psi-mi:"MI:1302"(stable complex) intact:EBI-1395983(chain-parent) go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) - chain-seq-start:19|chain-seq-end:224 disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer figure legend:2, Table 1|comment:"Cr-mCRP (acylated and mutated monomeric CRP) readily bound to immobilized C1q. In contrast, no interaction was detected under the same conditions using pentameric CRP."|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) kd:0.28x10^-9(molar) 2019/09/04 2019/10/07 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 - - false protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? - 1 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P02741-PRO_0000023526 matrixdb:MULT_82_human intact:EBI-22033103 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:"MI:0107"(surface plasmon resonance) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079440|imex:IM-27413-9 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:0326"(protein) psi-mi:"MI:1302"(stable complex) intact:EBI-1395983(chain-parent) go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) - chain-seq-start:19|chain-seq-end:224 disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer figure legend:Table 2|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) kd:1.95x10^-9(molar) 2019/09/04 2019/10/07 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 - - false protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? sufficient binding region:?-? 1 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P02741 matrixdb:MULT_82_human intact:EBI-1395983|uniprotkb:A8K078|uniprotkb:Q08AK3|uniprotkb:Q8WW75|uniprotkb:D3DVD9|uniprotkb:D3DVE0|ensembl:ENSP00000255030 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 psi-mi:crp_human(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:"MI:0107"(surface plasmon resonance) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079480|imex:IM-27413-11 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:0326"(protein) psi-mi:"MI:1302"(stable complex) refseq:NP_000558.2|refseq:NP_001315986.1|refseq:NP_001315987.1|dip:DIP-39125N|ensembl:ENSG00000132693(gene)|ensembl:ENST00000255030(transcript)|go:"GO:0001849"(complement component C1q complex binding)|go:"GO:0005509"(calcium ion binding)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0006953"(acute-phase response)|go:"GO:0006954"(inflammatory response)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0008228"(opsonization)|go:"GO:0010628"(positive regulation of gene expression)|go:"GO:0010745"(negative regulation of macrophage derived foam cell differentiation)|go:"GO:0010888"(negative regulation of lipid storage)|go:"GO:0030169"(low-density lipoprotein particle binding)|go:"GO:0032677"(regulation of interleukin-8 production)|go:"GO:0032930"(positive regulation of superoxide anion generation)|go:"GO:0032945"(negative regulation of mononuclear cell proliferation)|go:"GO:0033265"(choline binding)|go:"GO:0042310"(vasoconstriction)|go:"GO:0042802"(identical protein binding)|go:"GO:0044793"(negative regulation by host of viral process)|go:"GO:0045087"(innate immune response)|go:"GO:0050750"(low-density lipoprotein particle receptor binding)|go:"GO:0050830"(defense response to Gram-positive bacterium)|interpro:IPR001759(Pentaxin)|interpro:IPR013320(Concanavalin A-like lectin/glucanase, subgroup)|interpro:IPR030476|mint:P02741|rcsb pdb:1B09|rcsb pdb:1CRV|rcsb pdb:1GNH|rcsb pdb:1LJ7|rcsb pdb:3L2Y|rcsb pdb:3PVN|rcsb pdb:3PVO|reactome:R-HSA-173623 go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) - - disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer figure legend:Table 2-1/2|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) kd:1.45x10^-9(molar) 2019/09/04 2019/10/07 rogid:R7vKMSGKD4ETbUKVGL9IiL8jzjE9606 - - false - sufficient binding region:?-? 5 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P04003 uniprotkb:P02741-PRO_0000023526 intact:EBI-978348|ensembl:ENSP00000356037|uniprotkb:Q5VVQ8 intact:EBI-22033103 psi-mi:c4bpa_human(display_long)|uniprotkb:Proline-rich protein(gene name synonym)|uniprotkb:C4BPA(gene name)|psi-mi:C4BPA(display_short)|uniprotkb:C4BP(gene name synonym) psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:"MI:0107"(surface plasmon resonance) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0407"(direct interaction) psi-mi:"MI:0469"(IntAct) intact:EBI-22079983|imex:IM-27413-29 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:0326"(protein) psi-mi:"MI:0326"(protein) ensembl:ENSG00000123838(gene)|ensembl:ENST00000367070(transcript)|go:"GO:0003723"(RNA binding)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0005886"(plasma membrane)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0009609"(response to symbiotic bacterium)|go:"GO:0045087"(innate immune response)|go:"GO:0045732"(positive regulation of protein catabolic process)|go:"GO:0045959"(negative regulation of complement activation, classical pathway)|go:"GO:0072562"(blood microparticle)|go:"GO:1903027"(regulation of opsonization)|interpro:IPR000436(Sushi/SCR/CCP)|interpro:IPR035976|interpro:IPR040514|rcsb pdb:2A55|rcsb pdb:4B0F|rcsb pdb:5HYP|rcsb pdb:5HYT|rcsb pdb:5HYU|rcsb pdb:5HZP|rcsb pdb:5I0Q|reactome:R-HSA-977606|refseq:NP_000706.1|refseq:XP_005273308.1|refseq:XP_005273309.1 intact:EBI-1395983(chain-parent) - - chain-seq-start:19|chain-seq-end:224 figure legend:7, Table 4|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) kd:5.87x10^-9(molar) 2019/09/04 2019/11/04 rogid:S0F99wuDTalS4UCuYGWbiCgWlO09606 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 rigid:w2Ef6yAZO0DSrn1fr5n8iWmZHVw false - protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? 7 1 psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) chebi:"CHEBI:64482" uniprotkb:P02741 intact:EBI-13642339 intact:EBI-1395983|uniprotkb:A8K078|uniprotkb:Q08AK3|uniprotkb:Q8WW75|uniprotkb:D3DVD9|uniprotkb:D3DVE0|ensembl:ENSP00000255030 psi-mi:phosphatidylcholine(display_short)|psi-mi:"CHEBI:64482"(display_long)|intact:1,2-diacyl-glycero-3-phosphocholine(synonym)|intact:"a phosphatidylcholine (0)"(synonym)|intact:"2,3-bis(acyloxy)propyl 2-(trimethylammonio)ethyl phosphate"(iupac name) psi-mi:crp_human(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:-2(chemical synthesis)|taxid:-2("Chemical synthesis (Chemical synthesis)") taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079142|imex:IM-27413-21 - psi-mi:"MI:1060"(spoke expansion) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:0328"(small molecule) psi-mi:"MI:0326"(protein) - refseq:NP_000558.2|refseq:NP_001315986.1|refseq:NP_001315987.1|dip:DIP-39125N|ensembl:ENSG00000132693(gene)|ensembl:ENST00000255030(transcript)|go:"GO:0001849"(complement component C1q complex binding)|go:"GO:0005509"(calcium ion binding)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0006953"(acute-phase response)|go:"GO:0006954"(inflammatory response)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0008228"(opsonization)|go:"GO:0010628"(positive regulation of gene expression)|go:"GO:0010745"(negative regulation of macrophage derived foam cell differentiation)|go:"GO:0010888"(negative regulation of lipid storage)|go:"GO:0030169"(low-density lipoprotein particle binding)|go:"GO:0032677"(regulation of interleukin-8 production)|go:"GO:0032930"(positive regulation of superoxide anion generation)|go:"GO:0032945"(negative regulation of mononuclear cell proliferation)|go:"GO:0033265"(choline binding)|go:"GO:0042310"(vasoconstriction)|go:"GO:0042802"(identical protein binding)|go:"GO:0044793"(negative regulation by host of viral process)|go:"GO:0045087"(innate immune response)|go:"GO:0050750"(low-density lipoprotein particle receptor binding)|go:"GO:0050830"(defense response to Gram-positive bacterium)|interpro:IPR001759(Pentaxin)|interpro:IPR013320(Concanavalin A-like lectin/glucanase, subgroup)|interpro:IPR030476|mint:P02741|rcsb pdb:1B09|rcsb pdb:1CRV|rcsb pdb:1GNH|rcsb pdb:1LJ7|rcsb pdb:3L2Y|rcsb pdb:3PVN|rcsb pdb:3PVO|reactome:R-HSA-173623 - - - figure legend:3b|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/10/07 - rogid:R7vKMSGKD4ETbUKVGL9IiL8jzjE9606 - false - - - 5 psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) chebi:"CHEBI:64482" matrixdb:MULT_82_human intact:EBI-13642339 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 psi-mi:phosphatidylcholine(display_short)|psi-mi:"CHEBI:64482"(display_long)|intact:1,2-diacyl-glycero-3-phosphocholine(synonym)|intact:"a phosphatidylcholine (0)"(synonym)|intact:"2,3-bis(acyloxy)propyl 2-(trimethylammonio)ethyl phosphate"(iupac name) psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:-2(chemical synthesis)|taxid:-2("Chemical synthesis (Chemical synthesis)") taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079142|imex:IM-27413-21 - psi-mi:"MI:1060"(spoke expansion) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:0328"(small molecule) psi-mi:"MI:1302"(stable complex) - go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) - - disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer figure legend:3b|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/10/07 - - - false - - - - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) chebi:"CHEBI:64482" matrixdb:MULT_82_human intact:EBI-13642339 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 psi-mi:phosphatidylcholine(display_short)|psi-mi:"CHEBI:64482"(display_long)|intact:1,2-diacyl-glycero-3-phosphocholine(synonym)|intact:"a phosphatidylcholine (0)"(synonym)|intact:"2,3-bis(acyloxy)propyl 2-(trimethylammonio)ethyl phosphate"(iupac name) psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:-2(chemical synthesis)|taxid:-2("Chemical synthesis (Chemical synthesis)") taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079161|imex:IM-27413-3 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:0328"(small molecule) psi-mi:"MI:1302"(stable complex) - go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) - - disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer figure legend:3b-2|comment:Some binding of C1q to PC-KLH was seen in the absence of polymeric CRP.|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/10/07 - - - false - - - - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P02741-PRO_0000023526 matrixdb:MULT_82_human intact:EBI-22033103 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079282|imex:IM-27413-5 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0498"(prey) psi-mi:"MI:0496"(bait) psi-mi:"MI:0326"(protein) psi-mi:"MI:1302"(stable complex) intact:EBI-1395983(chain-parent) go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) - chain-seq-start:19|chain-seq-end:224 disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer figure legend:3, 4|comment:"Cr-mCRP (acylated and mutated monomeric CRP) readily bound to immobilized C1q. In contrast, no interaction was detected under the same conditions using pentameric CRP."|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 - - false protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? - 1 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) matrixdb:MULT_82_human matrixdb:MULT_82_human intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079335|imex:IM-27413-7 - psi-mi:"MI:1060"(spoke expansion) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0941"(competitor) psi-mi:"MI:0496"(bait) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:1302"(stable complex) psi-mi:"MI:1302"(stable complex) go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) - disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer figure legend:4|comment:"Fragments corresponding to the globular head regions of C1q (C1q GR) also competed for binding to CRP."|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 - - - false - sufficient binding region:?-? - - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) matrixdb:MULT_82_human uniprotkb:P02741-PRO_0000023526 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 intact:EBI-22033103 psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079335|imex:IM-27413-7 - psi-mi:"MI:1060"(spoke expansion) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:1302"(stable complex) psi-mi:"MI:0326"(protein) go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) intact:EBI-1395983(chain-parent) - disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer chain-seq-start:19|chain-seq-end:224 figure legend:4|comment:"Fragments corresponding to the globular head regions of C1q (C1q GR) also competed for binding to CRP."|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 - rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 - false - protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? - 1 psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P02741 matrixdb:MULT_82_human intact:EBI-1395983|uniprotkb:A8K078|uniprotkb:Q08AK3|uniprotkb:Q8WW75|uniprotkb:D3DVD9|uniprotkb:D3DVE0|ensembl:ENSP00000255030 intact:EBI-6264901|reactome:R-HSA-173579|wwpdb:1PK6|wwpdb:2wnv|wwpdb:2jg8|wwpdb:2jg9|wwpdb:2wnu|reactome:R-HSA-173588 psi-mi:crp_human(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:c1q_human(display_short)|psi-mi:MULT_82_human(display_long)|intact:Complement component C1q complex(complex recommended name)|intact:C1q(complex synonym)|intact:Complement 1q(complex synonym)|intact:C1QA-C1QB-C1QC complex(complex synonym)|intact:"6xC1QA:6xC1QB:6xC1QC"(complex systematic name) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0915"(physical association) psi-mi:"MI:0469"(IntAct) intact:EBI-22079331|imex:IM-27413-23 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0498"(prey) psi-mi:"MI:0496"(bait) psi-mi:"MI:0326"(protein) psi-mi:"MI:1302"(stable complex) refseq:NP_000558.2|refseq:NP_001315986.1|refseq:NP_001315987.1|dip:DIP-39125N|ensembl:ENSG00000132693(gene)|ensembl:ENST00000255030(transcript)|go:"GO:0001849"(complement component C1q complex binding)|go:"GO:0005509"(calcium ion binding)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0006953"(acute-phase response)|go:"GO:0006954"(inflammatory response)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0008228"(opsonization)|go:"GO:0010628"(positive regulation of gene expression)|go:"GO:0010745"(negative regulation of macrophage derived foam cell differentiation)|go:"GO:0010888"(negative regulation of lipid storage)|go:"GO:0030169"(low-density lipoprotein particle binding)|go:"GO:0032677"(regulation of interleukin-8 production)|go:"GO:0032930"(positive regulation of superoxide anion generation)|go:"GO:0032945"(negative regulation of mononuclear cell proliferation)|go:"GO:0033265"(choline binding)|go:"GO:0042310"(vasoconstriction)|go:"GO:0042802"(identical protein binding)|go:"GO:0044793"(negative regulation by host of viral process)|go:"GO:0045087"(innate immune response)|go:"GO:0050750"(low-density lipoprotein particle receptor binding)|go:"GO:0050830"(defense response to Gram-positive bacterium)|interpro:IPR001759(Pentaxin)|interpro:IPR013320(Concanavalin A-like lectin/glucanase, subgroup)|interpro:IPR030476|mint:P02741|rcsb pdb:1B09|rcsb pdb:1CRV|rcsb pdb:1GNH|rcsb pdb:1LJ7|rcsb pdb:3L2Y|rcsb pdb:3PVN|rcsb pdb:3PVO|reactome:R-HSA-173623 go:"GO:0005509"(calcium ion binding)|go:"GO:0019865"(immunoglobulin binding)|efo:"MONDO:0013343"(see-also)|pubmed:28601358(see-also)|pubmed:22536204(see-also)|intact:EBI-6264878(exp-evidence)|evidence ontology:"ECO:0000353"|complex portal:CPX-1919(complex-primary)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0005576"(extracellular region)|pubmed:20548024(see-also)|pubmed:29449492(see-also)|pubmed:18250442(see-also)|go:"GO:0062167"(complement component C1q complex)|pubmed:31165008(see-also)|pubmed:27914690(see-also)|pubmed:26489954(see-also) - - disease:"Complement component C1q deficiency (C1QD) [MONDO:0013343]: a disorder caused by impaired activation of the complement classical pathway. It generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis."|complex-properties:The complex comprises of six heterotrimeric collagen-like triple helices, formed from triplets of the A, B, and C chains, that associate in their N-terminal half to form a stalk, then diverge to form individual stems, each terminating in a C-terminal globular domain. Each of the six heterotrimeric globular heads or domains is made up of the globular domains from one A, one B, and one C chain, each of which in turn has its own ligand specificity. The six collagen-like stalks appear to be fibril-like and exist in the central region. The collagen-like region and the globular heads can independently interact with a multiplicity of biological structures including pathogen-associated and cell associated molecules, also each of the individual globular head domains is capable of independently interacting with specific ligands. Chains A and B are disulfide-linked whilst the C chain forms a disulfide bond with the C chain of the next strand. Molecular weight 460 kDa.|curated-complex:"Recognition unit of the classical pathway of complement which associates with the Ca2+ - dependent C1r(2)-C1s(2) tetramer to form C1 (CPX-1920), the first component of the classical complement system. The complex's role in C1 is the recognition of immune complexes, or other molecules, which trigger the classical pathway of the complement system. Independent of complement activation C1q appears to have additional roles in homeostasis and cellular development, superoxide (O2-) production by neutrophils, blood coagulation and neurological synapse pruning."|complex-assembly:Heterooctadecamer figure legend:3|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/10/07 rogid:R7vKMSGKD4ETbUKVGL9IiL8jzjE9606 - - false - - 1 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P02741-PRO_0000023526 uniprotkb:P08603 intact:EBI-22033103 intact:EBI-1223708|uniprotkb:A5PL14|uniprotkb:Q2TAZ5|uniprotkb:P78435|uniprotkb:Q14570|uniprotkb:Q38G77|uniprotkb:Q5TFM3|uniprotkb:Q8N708|uniprotkb:Q9NU86|ensembl:ENSP00000356399 psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:cfah_human(display_long)|uniprotkb:CFH(gene name)|psi-mi:CFH(display_short)|uniprotkb:HF(gene name synonym)|uniprotkb:HF1(gene name synonym)|uniprotkb:HF2(gene name synonym)|uniprotkb:H factor 1(gene name synonym) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0407"(direct interaction) psi-mi:"MI:0469"(IntAct) intact:EBI-22079913|imex:IM-27413-13 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:0326"(protein) psi-mi:"MI:0326"(protein) intact:EBI-1395983(chain-parent) refseq:NP_000177.2|dip:DIP-38303N|ensembl:ENSG00000000971(gene)|ensembl:ENST00000367429(transcript)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0006956"(complement activation)|go:"GO:0006957"(complement activation, alternative pathway)|go:"GO:0008201"(heparin binding)|go:"GO:0030449"(regulation of complement activation)|go:"GO:0042802"(identical protein binding)|go:"GO:0043395"(heparan sulfate proteoglycan binding)|go:"GO:0070062"(extracellular exosome)|go:"GO:0072562"(blood microparticle)|go:"GO:1903659"(regulation of complement-dependent cytotoxicity)|interpro:IPR000436(Sushi/SCR/CCP)|interpro:IPR035976|mint:P08603|rcsb pdb:1FHC|rcsb pdb:1HAQ|rcsb pdb:1HCC|rcsb pdb:1HFH|rcsb pdb:1HFI|rcsb pdb:1KOV|rcsb pdb:2QFH|rcsb pdb:2RLP|rcsb pdb:2RLQ|rcsb pdb:2UWN|rcsb pdb:2V8E|rcsb pdb:2W80|rcsb pdb:2BZM|rcsb pdb:2G7I|rcsb pdb:2W81|rcsb pdb:2WII|rcsb pdb:2XQW|rcsb pdb:3GAU|rcsb pdb:3GAV|rcsb pdb:3GAW|rcsb pdb:3KXV|rcsb pdb:3KZJ|rcsb pdb:3OXU|rcsb pdb:3R62|rcsb pdb:3RJ3|rcsb pdb:3SW0|rcsb pdb:4AYD|rcsb pdb:4AYE|rcsb pdb:4AYI|rcsb pdb:4AYM|rcsb pdb:4B2R|rcsb pdb:4B2S|rcsb pdb:2IC4|rcsb pdb:2JGW|rcsb pdb:2JGX|rcsb pdb:4J38|rcsb pdb:4K12|rcsb pdb:4ONT|rcsb pdb:4ZH1|rcsb pdb:5NBQ|rcsb pdb:5O32|rcsb pdb:5O35|rcsb pdb:2KMS|rcsb pdb:2QFG|rcsb pdb:5WTB|rcsb pdb:6ATG|reactome:R-HSA-977606 - chain-seq-start:19|chain-seq-end:224 - figure legend:5A, 8|comment:Preincubation of immobilized Cr-mCRP with C1q had no significant effect on subsequent binding of FH or C4BP.|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 rogid:1mjo+AJLIQnEsMFqsGsmUFbfUxk9606 rigid:j7J02aEiR5U4XuCFyVHXAsvVUos false protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? - 1 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P02741-PRO_0000023526 uniprotkb:P08603 intact:EBI-22033103 intact:EBI-1223708|uniprotkb:A5PL14|uniprotkb:Q2TAZ5|uniprotkb:P78435|uniprotkb:Q14570|uniprotkb:Q38G77|uniprotkb:Q5TFM3|uniprotkb:Q8N708|uniprotkb:Q9NU86|ensembl:ENSP00000356399 psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:cfah_human(display_long)|uniprotkb:CFH(gene name)|psi-mi:CFH(display_short)|uniprotkb:HF(gene name synonym)|uniprotkb:HF1(gene name synonym)|uniprotkb:HF2(gene name synonym)|uniprotkb:H factor 1(gene name synonym) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0407"(direct interaction) psi-mi:"MI:0469"(IntAct) intact:EBI-22079926|imex:IM-27413-25 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0496"(bait) psi-mi:"MI:0498"(prey) psi-mi:"MI:0326"(protein) psi-mi:"MI:0326"(protein) intact:EBI-1395983(chain-parent) refseq:NP_000177.2|dip:DIP-38303N|ensembl:ENSG00000000971(gene)|ensembl:ENST00000367429(transcript)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0006956"(complement activation)|go:"GO:0006957"(complement activation, alternative pathway)|go:"GO:0008201"(heparin binding)|go:"GO:0030449"(regulation of complement activation)|go:"GO:0042802"(identical protein binding)|go:"GO:0043395"(heparan sulfate proteoglycan binding)|go:"GO:0070062"(extracellular exosome)|go:"GO:0072562"(blood microparticle)|go:"GO:1903659"(regulation of complement-dependent cytotoxicity)|interpro:IPR000436(Sushi/SCR/CCP)|interpro:IPR035976|mint:P08603|rcsb pdb:1FHC|rcsb pdb:1HAQ|rcsb pdb:1HCC|rcsb pdb:1HFH|rcsb pdb:1HFI|rcsb pdb:1KOV|rcsb pdb:2QFH|rcsb pdb:2RLP|rcsb pdb:2RLQ|rcsb pdb:2UWN|rcsb pdb:2V8E|rcsb pdb:2W80|rcsb pdb:2BZM|rcsb pdb:2G7I|rcsb pdb:2W81|rcsb pdb:2WII|rcsb pdb:2XQW|rcsb pdb:3GAU|rcsb pdb:3GAV|rcsb pdb:3GAW|rcsb pdb:3KXV|rcsb pdb:3KZJ|rcsb pdb:3OXU|rcsb pdb:3R62|rcsb pdb:3RJ3|rcsb pdb:3SW0|rcsb pdb:4AYD|rcsb pdb:4AYE|rcsb pdb:4AYI|rcsb pdb:4AYM|rcsb pdb:4B2R|rcsb pdb:4B2S|rcsb pdb:2IC4|rcsb pdb:2JGW|rcsb pdb:2JGX|rcsb pdb:4J38|rcsb pdb:4K12|rcsb pdb:4ONT|rcsb pdb:4ZH1|rcsb pdb:5NBQ|rcsb pdb:5O32|rcsb pdb:5O35|rcsb pdb:2KMS|rcsb pdb:2QFG|rcsb pdb:5WTB|rcsb pdb:6ATG|reactome:R-HSA-977606 - chain-seq-start:19|chain-seq-end:224 - figure legend:5A-2|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 rogid:1mjo+AJLIQnEsMFqsGsmUFbfUxk9606 rigid:j7J02aEiR5U4XuCFyVHXAsvVUos false - - 1 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P02741-PRO_0000023526 uniprotkb:P08603 intact:EBI-22033103 intact:EBI-1223708|uniprotkb:A5PL14|uniprotkb:Q2TAZ5|uniprotkb:P78435|uniprotkb:Q14570|uniprotkb:Q38G77|uniprotkb:Q5TFM3|uniprotkb:Q8N708|uniprotkb:Q9NU86|ensembl:ENSP00000356399 psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:cfah_human(display_long)|uniprotkb:CFH(gene name)|psi-mi:CFH(display_short)|uniprotkb:HF(gene name synonym)|uniprotkb:HF1(gene name synonym)|uniprotkb:HF2(gene name synonym)|uniprotkb:H factor 1(gene name synonym) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0407"(direct interaction) psi-mi:"MI:0469"(IntAct) intact:EBI-22079938|imex:IM-27413-15 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0498"(prey) psi-mi:"MI:0496"(bait) psi-mi:"MI:0326"(protein) psi-mi:"MI:0326"(protein) intact:EBI-1395983(chain-parent) refseq:NP_000177.2|dip:DIP-38303N|ensembl:ENSG00000000971(gene)|ensembl:ENST00000367429(transcript)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0006956"(complement activation)|go:"GO:0006957"(complement activation, alternative pathway)|go:"GO:0008201"(heparin binding)|go:"GO:0030449"(regulation of complement activation)|go:"GO:0042802"(identical protein binding)|go:"GO:0043395"(heparan sulfate proteoglycan binding)|go:"GO:0070062"(extracellular exosome)|go:"GO:0072562"(blood microparticle)|go:"GO:1903659"(regulation of complement-dependent cytotoxicity)|interpro:IPR000436(Sushi/SCR/CCP)|interpro:IPR035976|mint:P08603|rcsb pdb:1FHC|rcsb pdb:1HAQ|rcsb pdb:1HCC|rcsb pdb:1HFH|rcsb pdb:1HFI|rcsb pdb:1KOV|rcsb pdb:2QFH|rcsb pdb:2RLP|rcsb pdb:2RLQ|rcsb pdb:2UWN|rcsb pdb:2V8E|rcsb pdb:2W80|rcsb pdb:2BZM|rcsb pdb:2G7I|rcsb pdb:2W81|rcsb pdb:2WII|rcsb pdb:2XQW|rcsb pdb:3GAU|rcsb pdb:3GAV|rcsb pdb:3GAW|rcsb pdb:3KXV|rcsb pdb:3KZJ|rcsb pdb:3OXU|rcsb pdb:3R62|rcsb pdb:3RJ3|rcsb pdb:3SW0|rcsb pdb:4AYD|rcsb pdb:4AYE|rcsb pdb:4AYI|rcsb pdb:4AYM|rcsb pdb:4B2R|rcsb pdb:4B2S|rcsb pdb:2IC4|rcsb pdb:2JGW|rcsb pdb:2JGX|rcsb pdb:4J38|rcsb pdb:4K12|rcsb pdb:4ONT|rcsb pdb:4ZH1|rcsb pdb:5NBQ|rcsb pdb:5O32|rcsb pdb:5O35|rcsb pdb:2KMS|rcsb pdb:2QFG|rcsb pdb:5WTB|rcsb pdb:6ATG|reactome:R-HSA-977606 - chain-seq-start:19|chain-seq-end:224 - figure legend:5B|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 rogid:1mjo+AJLIQnEsMFqsGsmUFbfUxk9606 rigid:j7J02aEiR5U4XuCFyVHXAsvVUos false protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? - 1 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P04003 uniprotkb:P02741-PRO_0000023526 intact:EBI-978348|ensembl:ENSP00000356037|uniprotkb:Q5VVQ8 intact:EBI-22033103 psi-mi:c4bpa_human(display_long)|uniprotkb:Proline-rich protein(gene name synonym)|uniprotkb:C4BPA(gene name)|psi-mi:C4BPA(display_short)|uniprotkb:C4BP(gene name synonym) psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0407"(direct interaction) psi-mi:"MI:0469"(IntAct) intact:EBI-22079954|imex:IM-27413-17 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0498"(prey) psi-mi:"MI:0496"(bait) psi-mi:"MI:0326"(protein) psi-mi:"MI:0326"(protein) ensembl:ENSG00000123838(gene)|ensembl:ENST00000367070(transcript)|go:"GO:0003723"(RNA binding)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0005886"(plasma membrane)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0009609"(response to symbiotic bacterium)|go:"GO:0045087"(innate immune response)|go:"GO:0045732"(positive regulation of protein catabolic process)|go:"GO:0045959"(negative regulation of complement activation, classical pathway)|go:"GO:0072562"(blood microparticle)|go:"GO:1903027"(regulation of opsonization)|interpro:IPR000436(Sushi/SCR/CCP)|interpro:IPR035976|interpro:IPR040514|rcsb pdb:2A55|rcsb pdb:4B0F|rcsb pdb:5HYP|rcsb pdb:5HYT|rcsb pdb:5HYU|rcsb pdb:5HZP|rcsb pdb:5I0Q|reactome:R-HSA-977606|refseq:NP_000706.1|refseq:XP_005273308.1|refseq:XP_005273309.1 intact:EBI-1395983(chain-parent) - - chain-seq-start:19|chain-seq-end:224 figure legend:6A,8|comment:Preincubation of immobilized Cr-mCRP with C1q had no significant effect on subsequent binding of FH or C4BP.|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 rogid:S0F99wuDTalS4UCuYGWbiCgWlO09606 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 rigid:w2Ef6yAZO0DSrn1fr5n8iWmZHVw false - protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? - 1 psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P04003 uniprotkb:P02741-PRO_0000023526 intact:EBI-978348|ensembl:ENSP00000356037|uniprotkb:Q5VVQ8 intact:EBI-22033103 psi-mi:c4bpa_human(display_long)|uniprotkb:Proline-rich protein(gene name synonym)|uniprotkb:C4BPA(gene name)|psi-mi:C4BPA(display_short)|uniprotkb:C4BP(gene name synonym) psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0407"(direct interaction) psi-mi:"MI:0469"(IntAct) intact:EBI-22079966|imex:IM-27413-27 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0498"(prey) psi-mi:"MI:0496"(bait) psi-mi:"MI:0326"(protein) psi-mi:"MI:0326"(protein) ensembl:ENSG00000123838(gene)|ensembl:ENST00000367070(transcript)|go:"GO:0003723"(RNA binding)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0005886"(plasma membrane)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0009609"(response to symbiotic bacterium)|go:"GO:0045087"(innate immune response)|go:"GO:0045732"(positive regulation of protein catabolic process)|go:"GO:0045959"(negative regulation of complement activation, classical pathway)|go:"GO:0072562"(blood microparticle)|go:"GO:1903027"(regulation of opsonization)|interpro:IPR000436(Sushi/SCR/CCP)|interpro:IPR035976|interpro:IPR040514|rcsb pdb:2A55|rcsb pdb:4B0F|rcsb pdb:5HYP|rcsb pdb:5HYT|rcsb pdb:5HYU|rcsb pdb:5HZP|rcsb pdb:5I0Q|reactome:R-HSA-977606|refseq:NP_000706.1|refseq:XP_005273308.1|refseq:XP_005273309.1 intact:EBI-1395983(chain-parent) - - chain-seq-start:19|chain-seq-end:224 figure legend:6A-2|comment:Weak binding was seen. Some binding was also seen at higher concentrations of C4BP with pentameric CRP , structurally modified by direct attachment to the ELISA plate.|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 rogid:S0F99wuDTalS4UCuYGWbiCgWlO09606 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 rigid:w2Ef6yAZO0DSrn1fr5n8iWmZHVw false - - - 1 psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant) uniprotkb:P02741-PRO_0000023526 uniprotkb:P04003 intact:EBI-22033103 intact:EBI-978348|ensembl:ENSP00000356037|uniprotkb:Q5VVQ8 psi-mi:p02741-pro_0000023526(display_long)|uniprotkb:CRP(gene name)|psi-mi:CRP(display_short)|uniprotkb:PTX1(gene name synonym) psi-mi:c4bpa_human(display_long)|uniprotkb:Proline-rich protein(gene name synonym)|uniprotkb:C4BPA(gene name)|psi-mi:C4BPA(display_short)|uniprotkb:C4BP(gene name synonym) psi-mi:"MI:0411"(enzyme linked immunosorbent assay) Bíró et al. (2007) pubmed:17244159|imex:IM-27413 taxid:9606(human)|taxid:9606(Homo sapiens) taxid:9606(human)|taxid:9606(Homo sapiens) psi-mi:"MI:0407"(direct interaction) psi-mi:"MI:0469"(IntAct) intact:EBI-22079972|imex:IM-27413-19 - - psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0499"(unspecified role) psi-mi:"MI:0498"(prey) psi-mi:"MI:0496"(bait) psi-mi:"MI:0326"(protein) psi-mi:"MI:0326"(protein) intact:EBI-1395983(chain-parent) ensembl:ENSG00000123838(gene)|ensembl:ENST00000367070(transcript)|go:"GO:0003723"(RNA binding)|go:"GO:0005576"(extracellular region)|go:"GO:0005615"(extracellular space)|go:"GO:0005886"(plasma membrane)|go:"GO:0006958"(complement activation, classical pathway)|go:"GO:0009609"(response to symbiotic bacterium)|go:"GO:0045087"(innate immune response)|go:"GO:0045732"(positive regulation of protein catabolic process)|go:"GO:0045959"(negative regulation of complement activation, classical pathway)|go:"GO:0072562"(blood microparticle)|go:"GO:1903027"(regulation of opsonization)|interpro:IPR000436(Sushi/SCR/CCP)|interpro:IPR035976|interpro:IPR040514|rcsb pdb:2A55|rcsb pdb:4B0F|rcsb pdb:5HYP|rcsb pdb:5HYT|rcsb pdb:5HYU|rcsb pdb:5HZP|rcsb pdb:5I0Q|reactome:R-HSA-977606|refseq:NP_000706.1|refseq:XP_005273308.1|refseq:XP_005273309.1 - chain-seq-start:19|chain-seq-end:224 - figure legend:6B|full coverage:Only protein-protein interactions|curation depth:imex curation taxid:-1(in vitro)|taxid:-1(In vitro) - 2019/09/04 2019/11/04 rogid:CvK4vTdUxXgEsFN2HKUWzPg5lx49606 rogid:S0F99wuDTalS4UCuYGWbiCgWlO09606 rigid:w2Ef6yAZO0DSrn1fr5n8iWmZHVw false protein modification:1-1|mutation:36-36,97-97|acylated residue:?-? - 1 - psi-mi:"MI:0396"(predetermined participant) psi-mi:"MI:0396"(predetermined participant)