Collagen alpha-1(XVIII) chain (P39060)

Uniprot ID P39060
Protein Name Collagen alpha-1(XVIII) chain
Gene Name COL18A1
Species Homo sapiens (Human)
Signal peptide(a) N Secretome P(b) 0.13
Function Probably plays a major role in determining the retinal structure as well as in the closure of the neural tube. .[Non-collagenous domain 1]: May regulate extracellular matrix-dependent motility and morphogenesis of endothelial and non-endothelial cells; the function requires homotrimerization and implicates MAPK signaling. {ECO:0000269|PubMed:11257123}.Endostatin: Potently inhibits endothelial cell proliferation and angiogenesis (PubMed:9459295). May inhibit angiogenesis by binding to the heparan sulfate proteoglycans involved in growth factor signaling (By similarity). Inhibits VEGFA-induced endothelial cell proliferation and migration. Seems to inhibit VEGFA-mediated signaling by blocking the interaction of VEGFA to its receptor KDR/VEGFR2. Modulates endothelial cell migration in an integrin-dependent manner implicating integrin ITGA5:ITGB1 and to a lesser extent ITGAV:ITGB3 and ITGAV:ITGB5 (By similarity). May negatively regulate the activity of homotrimeric non-collagenous domain 1 (PubMed:11257123). {ECO:0000250|UniProtKB:P39061, ECO:0000269|PubMed:11257123, ECO:0000269|PubMed:9459295}.
GO - Molecular function
  • extracellular matrix structural constituent : IBA:GO_Central
  • identical protein binding : IPI:IntAct
  • metal ion binding : IEA:UniProtKB-KW
GO - Biological process
  • angiogenesis : IBA:GO_Central
  • animal organ morphogenesis : TAS:ProtInc
  • cell adhesion : IEA:UniProtKB-KW
  • endothelial cell morphogenesis : IBA:GO_Central
  • extracellular matrix organization : IBA:GO_Central
  • negative regulation of cell population proliferation : TAS:ProtInc
  • positive regulation of cell migration : IEA:Ensembl
  • positive regulation of cell population proliferation : IEA:Ensembl
  • positive regulation of endothelial cell apoptotic process : IEA:Ensembl
  • response to drug : IEA:Ensembl
  • response to hydrostatic pressure : IEA:Ensembl
  • visual perception : TAS:ProtInc
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(a) The Signal peptide D-score cutoff for "YES"(having signal peptide) is 0.45.
(b) Non-classically secreted proteins should obtain an NN-score(Neural Networks score) exceeding the normal threshold of 0.5, but not at the same time be predicted to contain a signal peptide.