bFGF is a single-chain polypeptide growth factor that plays a significant role in the process of wound healing and is a potent inducer of angiogenesis. Several different forms of the human protein exist ranging from 18-24 kD in size due to the use of alternative start sites within the fgf-2 gene. It has a 55 percent amino acid residue identity to FGF-1 and has potent heparin-binding activity. The growth factor is an extremely potent inducer of DNA synthesis in a variety of cell types from mesoderm and neuroectoderm lineages. It was originally named basic fibroblast growth factor based upon its chemical properties and to distinguish it from acidic fibroblast growth factor.Other homologous FGF belonging to the same family are int-2 ( FGF-3 ), FGF-5 , FGF-6 , K-FGF and KGF ( keratinocyte growth factor =FGF-7 ). All factors are products of different genes, some of which are Oncogene products ( FGF-3 , FGF-4 , FGF-5 ).
Biological Activity:
Fully biologically active when compared to standard. The ED50, calculated by the dose-dependent proliferation of BAF3 cells expressing FGF receptors (measured by 3H-thymidine uptake) is <0.5 ng/ml, corresponding to a specific activity of 2.0 x 10e6 Units/mg.
Endotoxin: (same/less than)1EU/ug as determined by LAL method.
Storage and Stability:
Aliquot to avoid repeated freezing and thawing and freeze at -70 degrees C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Aliquots are stable for at least 12 months.