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CD31 (platelet endothelial cell adhesion molecule-1, PECAM-1) is an inhibitory coreceptor involved in regulation of T cell and B cell signaling by a dual immunoreceptor tyrosine-based inhibitory motif (ITIM) that upon associated kinases-mediated phosphorylation provide docking sites for protein-tyrosine phosphatases. CD31 is expressed ubiquitously within the vascular compartment and is located mainly at junctions between adjacent cells. N-terminal Ig-like domain of CD31 is responsible for its homophilic binding, which plays an important role in cell-cell interactions. CD31 is a multifunctional molecule with diverse roles in modulation of integrin-mediated cell adhesion, transendothelial migration, angiogenesis, apoptosis, negative regulation of immunoreceptor signaling, autoimmunity, macrophage phagocytosis, IgE-mediated anaphylaxis and thrombosis. It is one of key regulatory molecules in vascular system.
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Protein Aliases: CD31; CD31 antigen; EndoCAM; GPIIA'; PECA1; PECAM-1; Platelet endothelial cell adhesion molecule; platelet endothelial cell adhesion molecule-1; platelet/endothelial cell adhesion molecule (CD31 antigen); platelet/endothelial cell adhesion molecule 1; type I transmembrane endothelial adhesion molecule
Gene Aliases: C85791; CD31; CD31/EndoCAM; endoCAM; GPIIA'; PECA1; Pecam; PECAM-1; PECAM1
UniProt ID: (Pig) Q95242, (Human) P16284, (Rat) Q3SWT0, (Mouse) Q08481
Entrez Gene ID: (Rabbit) 100357605, (Pig) 396941, (Human) 5175, (Rat) 29583, (Mouse) 18613
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