Platelet Derived Growth Factor-Aa (PDGFAA) Human Recombinant Protein

The protein encoded by this gene is a member of the platelet-derived growth factor family. The four members of this family are mitogenic factors for cells of mesenchymal origin and are characterized by a motif of eight cysteines. This gene product can exist either as a homodimer or as a heterodimer with the platelet-derived growth factor beta polypeptide, where the dimers are connected by disulfide bonds. Studies using knockout mice have shown cellular defects in oligodendrocytes, alveolar smooth muscle cells, and Leydig cells in the testis; knockout mice die either as embryos or shortly after birth. Two splice variants have been identified for this gene. [provided by RefSeq, Jul 2008]

PDGFA: Growth factor that plays an essential role in the regulation of embryonic development, cell proliferation, cell migration, survival and chemotaxis. Potent mitogen for cells of mesenchymal origin. Required for normal lung alveolar septum formation during embryogenesis, normal development of the gastrointestinal tract, normal development of Leydig cells and spermatogenesis. Required for normal oligodendrocyte development and normal myelination in the spinal cord and cerebellum. Plays an important role in wound healing. Signaling is modulated by the formation of heterodimers with PDGFB. Belongs to the PDGF/VEGF growth factor family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Cytokine; Secreted, signal peptide; Secreted; Cell cycle regulation

Chromosomal Location of Human Ortholog: 7p22

Cellular Component: Golgi membrane; extracellular space; cell surface; microvillus; endoplasmic reticulum lumen; extracellular region

Molecular Function: collagen binding; protein binding; protein homodimerization activity; growth factor activity; protein heterodimerization activity; platelet-derived growth factor binding; platelet-derived growth factor receptor binding

Biological Process: skin development; extracellular matrix organization and biogenesis; wound healing; nerve growth factor receptor signaling pathway; negative chemotaxis; platelet-derived growth factor receptor signaling pathway; cell projection biogenesis; response to estradiol stimulus; positive regulation of MAP kinase activity; positive regulation of fibroblast proliferation; platelet degranulation; regulation of smooth muscle cell migration; cell-cell signaling; positive regulation of MAPKKK cascade; hair follicle development; transforming growth factor beta receptor signaling pathway; positive regulation of mesenchymal cell proliferation; positive regulation of cell proliferation; response to wounding; angiogenesis; inner ear development; regulation of peptidyl-tyrosine phosphorylation; response to drug; epidermal growth factor receptor signaling pathway; platelet activation; fibroblast growth factor receptor signaling pathway; phosphoinositide-mediated signaling; response to retinoic acid; response to inorganic substance; negative regulation of phosphatidylinositol biosynthetic process; positive regulation of protein amino acid autophosphorylation; positive regulation of phosphoinositide 3-kinase cascade; cell activation; positive regulation of protein kinase B signaling cascade; organ morphogenesis; positive regulation of cell division; regulation of actin cytoskeleton organization and biogenesis; response to hypoxia; innate immune response; actin cytoskeleton organization and biogenesis; blood coagulation; alveolus development; positive regulation of DNA replication; positive regulation of cell migration