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蛋白别名: 2.7.1.153; EC:2.7.11.1; GRB1; MGC142161; MGC142163; phosphatidylinositol 3-kinase, catalytic, 110-KD, alpha; phosphatidylinositol 3-kinase, catalytic, alpha polypeptide; Phosphatidylinositol 4,5-bisphosphate 3-kinase 110 kDa catalytic subunit alpha; Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform; phosphatidylinositol-4,5-bisphosphate 3-kinase 110 kDa catalytic subunit alpha; phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha isoform; phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit, alpha isoform; Phosphoinositide 3-kinase alpha; Phosphoinositide-3-kinase catalytic alpha polypeptide; phosphoinositide-3-kinase, catalytic, alpha polypeptide; PI3-kinase p110 subunit alpha; PI3-kinase subunit alpha; PI3K alpha; PI3K-alpha; PI3Kalpha; pi3kca; PIK3R1; pk3ca; ptdIns-3-kinase subunit alpha; PtdIns-3-kinase subunit p110-alpha; Serine/threonine protein kinase PIK3CA

Phosphatidylinositol 3-kinase is composed of an 85 kDa regulatory subunit and a 110 kDa catalytic subunit. The protein encoded by this gene represents the catalytic subunit, which uses ATP to phosphorylate PtdIns, PtdIns4P and PtdIns(4,5)P2. This gene has been found to be oncogenic and has been implicated in cervical cancers.