HGF Alpha Chain (HGFA) Human Recombinant Protein

Hepatocyte growth factor regulates cell growth, cell motility, and morphogenesis by activating a tyrosine kinase signaling cascade after binding to the proto-oncogenic c-Met receptor. Hepatocyte growth factor is secreted by mesenchymal cells and acts as a multi-functional cytokine on cells of mainly epithelial origin. Its ability to stimulate mitogenesis, cell motility, and matrix invasion gives it a central role in angiogenesis, tumorogenesis, and tissue regeneration. It is secreted as a single inactive polypeptide and is cleaved by serine proteases into a 69-kDa alpha-chain and 34-kDa beta-chain. A disulfide bond between the alpha and beta chains produces the active, heterodimeric molecule. The protein belongs to the plasminogen subfamily of S1 peptidases but has no detectable protease activity. Alternative splicing of this gene produces multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

HGF: HGF is a potent mitogen for mature parenchymal hepatocyte cells, seems to be an hepatotrophic factor, and acts as growth factor for a broad spectrum of tissues and cell types. It has no detectable protease activity. Activating ligand for the receptor tyrosine kinase MET by binding and promoting its dimerization. Defects in HGF are the cause of deafness autosomal recessive type 39 (DFNB39). A form of profound prelingual sensorineural hearing loss. Sensorineural deafness results from damage to the neural receptors of the inner ear, the nerve pathways to the brain, or the area of the brain that receives sound information. Belongs to the peptidase S1 family. Plasminogen subfamily. 6 isoforms of the human protein are produced by alternative splicing.

Protein type: Motility/polarity/chemotaxis; Cell development/differentiation; Hormone

Chromosomal Location of Human Ortholog: 7q21.1

Cellular Component: extracellular space; membrane; extracellular region

Molecular Function: identical protein binding; protein binding; growth factor activity; protein heterodimerization activity; serine-type endopeptidase activity; chemoattractant activity

Biological Process: positive regulation of myelination; platelet activation; mitosis; organ regeneration; activation of MAPK activity; myoblast proliferation; hepatocyte growth factor receptor signaling pathway; negative regulation of caspase activity; proteolysis; liver development; positive regulation of phosphoinositide 3-kinase cascade; positive regulation of osteoblast differentiation; positive regulation of peptidyl-tyrosine phosphorylation; positive regulation of angiogenesis; platelet degranulation; positive chemotaxis; epithelial to mesenchymal transition; positive regulation of transcription from RNA polymerase II promoter; blood coagulation; hyaluronan metabolic process; positive regulation of cell migration

Disease: Deafness, Autosomal Recessive 39