Downstream signal transduction

Stable Identifier
Homo sapiens
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The role of autophosphorylation sites on PDGF receptors are to provide docking sites for downstream signal transduction molecules which contain SH2 domains. The SH2 domain is a conserved motif of around 100 amino acids that can bind a phosphorylated tyrosine residue. These downstream molecules are activated upon binding to, or phosphorylated by, the receptor kinases intrinsic to PDGF receptors.
Some of the dowstream molecules are themselves enzymes, such as phosphatidylinositol 3'-kinase (PI3K), phospholipase C (PLC-gamma), the Src family of tyrosine kinases, the tyrosine phosphatase SHP2, and a GTPase activating protein (GAP) for Ras. Others such as Grb2 are adaptor molecules which link the receptor with downstream catalytic molecules.

Literature References
PubMed ID Title Journal Year
9739761 Signal transduction via platelet-derived growth factor receptors

Heldin, CH, Ostman, A, Rönnstrand, L

Biochim Biophys Acta 1998
10508235 Mechanism of action and in vivo role of platelet-derived growth factor

Heldin, CH, Westermark, B

Physiol Rev 1999
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Orthologous Events
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