FGF-7 (KGF) Anti-Human 100 µg

The FGF family is comprised of at least nine polypeptides that show a variety of biological activities toward cells of mesenchymal, neuronal and epithelial origin. All FGFs have two conserved cysteine residues and share 30 - 50% sequence identity at the amino acid level. KGF/FGF-7 was originally isolated from the conditioned medium of a human embryonic lung fibroblast cell line as a mitogen that is specific for epithelial cells. The transcript for KGF/FGF-7 can be detected in stromal but not epithelial cells from various epithelial tissues. It has been proposed that KGF is a mesenchymal cell-derived paracrine growth factor that specifically stimulates epithelial cell growth. The KGF cDNA encodes a 194 amino acid precursor protein from which the N-terminal 31 amino acid residues are cleaved to generate the mature KGF. Human KGF exhibits species cross-reactivity and is active on mouse, monkey, and porcine cells. A high affinity receptor for KGF has been cloned and shown to be an alternatively spliced isoform of FGF R2/bek. Whereas FGF R2 binds FGF acidic and FGF basic but not KGF with high affinity, the alternately spliced KGF/FGF-7 R can bind KGF and FGF acidic with high affinity.