This product specifically recognises an epitope within amino acid residues 1-251 located in the extracellular domain of human VEGF (vascular endothelial growth factor) receptor 1 (VEGFR-1), otherwise known as Flt-1, a tyrosine-kinase receptor expressed by almost all vascular endothelial cells and by some peripheral blood monocytes. VEGFR-1 acts as a receptor for members of the VEGF protein family, playing a key role in vascular development and the regulation of vascular permeability. The signal transduction cascade resulting from VEGFR-1 binding appears to differ from that of VEGFR-2 (KDR), since the proliferation of cells lacking VEGFR-1 can be induced by VEGFR-2 binding, whilst the proliferation of cells lacking VEGFR-2, cannot be induced by VEGFR-1 binding alone. http://www.creative-diagnostics.com/Anti-PKC-MAb-184721-144.htm