Recombinant Active Protein
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Vascular Endothelial Growth Factor-A (VEGF-A) was originally isolated from tumor cells and is produced by a wide variety of cell types. In addition to stimulating vascular growth and vascular permeability, VEGF-A may play a role in stimulating vasodilatation via nitric oxide-dependent pathways. VEGF-A has several variants, VEGF-165 being the most abundant. Rat and bovine VEGF are one amino acid shorter than the human factor, and the bovine and human sequences show a homology of 95%. Rat VEGF-165 is produced in E.coli. Recombinant rat VEGF-165 is a disulfide linked homodimer, containing two 165 amino acids chains, with a total molecular weight of 38.8 kDa.