This domain is found in Vascular endothelial growth factor receptor 1 from humans (VEGFR-1) and similar proteins from animals. VEGFR-1 is a tyrosine kinase receptor for the placental growth factor (PlGF) that plays an essential role in the development of embryonic vasculature, the regulation of angiogenesis and other essential cellular processes. It consists of seven immunoglobulin-like (Ig-like) domains in its extracellular portion. This entry represents the second of these domains [1-5].

1: Crystal structure at 1.7 A resolution of VEGF in complex with domain 2 of the Flt-1 receptor. Wiesmann C, Fuh G, Christinger HW, Eigenbrot C, Wells JA, de Vos AM; Cell. 1997;91:695-704. PMID:9393862

2: Solution structure of the VEGF-binding domain of Flt-1: comparison of its free and bound states. Starovasnik MA, Christinger HW, Wiesmann C, Champe MA, de Vos AM, Skelton NJ; J Mol Biol. 1999;293:531-544. PMID:10543948

3: The crystal structure of placental growth factor in complex with domain 2 of vascular endothelial growth factor receptor-1. Christinger HW, Fuh G, de Vos AM, Wiesmann C; J Biol Chem. 2004;279:10382-10388. PMID:14684734

4: Structural basis for activation of the receptor tyrosine kinase KIT by stem cell factor. Yuzawa S, Opatowsky Y, Zhang Z, Mandiyan V, Lax I, Schlessinger J; Cell. 2007;130:323-334. PMID:17662946

5: Structural basis for stem cell factor-KIT signaling and activation of class III receptor tyrosine kinases. Liu H, Chen X, Focia PJ, He X; EMBO J. 2007;26:891-901. PMID:17255936