Source:http://www.reactome.org/biopax/48887BiochemicalReaction2285
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After the generation of PIP3 by PI3K, a part of it is further dephosphorylated to generate other forms of PI which are also involved in signaling. Two major routes for the degradation of PIP3 exists: dephosphorylation by the haematopoietic-specific SH2 domain-containing inositol 5' phosphatase SHIP-1 and dephosphorylation by the 3' phosphoinositide phosphatase PTEN. <br>SHIP-1 appears to set an activation threshold on T cell signaling. SHIP-1 phosphatase activity removes the 5' phosphate of PIP3 and generate phosphatidylinositol 3,4-bisphosphate. PI(3,4)P2 along with PIP3 preferentially binds to the PH domains of PKB and PDK1.,
Authored: Rudd, C.E., de Bono, B, Garapati, P V, 2008-01-24 15:53:10,
Reviewed: Trowsdale, J, 2008-02-26 12:02:59
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Hydrolysis of PIP3 to PI(3,4)P2
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3.1.3.67
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