Platelet Derived Growth Factor AA (PDGF-AA, Platelet-Derived Growth Factor Subunit A, PDGF Subunit A, Platelet-Derived Growth Factor A Chain, Platelet-Derived Growth Factor alpha Polypeptide, PDGF-1, PDGFA, PDGF1) (AP)

Platelet derived growth factor A chain), a disulphide-linked alpha-chain homodimer and member of the PDGF family, released from platelet alpha-granules following trauma/platelet activation. Naturally occurring active forms of PDGF exist as dimers of two alpha chains (AA), two beta chains (BB), or a combination of both chains (AB), all of which signal through the high-affinity PDGF-Ralpha receptor, and the latter two of which can also signal through the PDGF-Rbeta receptor. PDGFs are potent mitogens for a variety of cells including those of the connective tissue, bone and cartilage, blood and smooth...