Description
Protocol
Available protocols: ELISA+
Specificity / Sensitivity
PathScan
Species Reactivity: Human
Background
Vascular endothelial growth factor receptor 2 (VEGFR2, KDR, Flk-1) is a major receptor for VEGF-induced signaling in endothelial cells. Upon ligand binding, VEGFR2 undergoes autophosphorylation and becomes activated (1). Major autophosphorylation sites of VEGFR2 are located in the kinase insert domain (Tyr951/996) and in the tyrosine kinase catalytic domain (Tyr1054/1059) (2). Activation of the receptor leads to rapid recruitment of adaptor proteins, including Shc, GRB2, PI3 kinase, NCK, and the protein tyrosine phosphatases SHP-1 and SHP-2 (3). Phosphorylation at Tyr1212 provides a docking site for GRB2 binding and phospho-Tyr1175 binds the p85 subunit of PI3 kinase and PLCγ, as well as Shb (1,4,5). Signaling from VEGFR2 is necessary for the execution of VEGF-stimulated proliferation, chemotaxis and sprouting, as well as survival of cultured endothelial cells and angiogenesis (6-8).
Alternate Names
CD309; Fetal liver kinase 1; fetal liver kinase-1; FLK-1; FLK1; KDR; Kinase insert domain receptor; kinase insert domain receptor (a type III receptor tyrosine kinase); Protein-tyrosine kinase receptor flk-1; soluble VEGFR2; tyrosine kinase growth factor receptor; Vascular endothelial growth factor receptor 2; VEGFR; VEGFR-2; VEGFR2; VGFR2
