ID 2.7.1.153 DE Phosphatidylinositol-4,5-bisphosphate 3-kinase. AN Type I phosphoinositide 3-kinase. CA ATP + 1-phosphatidyl-1D-myo-inositol 4,5-bisphosphate = ADP + CA 1-phosphatidyl-1D-myo-inositol 3,4,5-trisphosphate. CC -!- This enzyme also catalyzes the phosphorylation of PtdIns4P to CC PtdIns(3,4)P(2), and of PtdIns to PtdIns3P. DR P32871, PK3CA_BOVIN; P42336, PK3CA_HUMAN; P42337, PK3CA_MOUSE; DR P42338, PK3CB_HUMAN; Q8BTI9, PK3CB_MOUSE; Q9Z1L0, PK3CB_RAT ; DR O00329, PK3CD_HUMAN; O35904, PK3CD_MOUSE; P48736, PK3CG_HUMAN; DR Q9JHG7, PK3CG_MOUSE; O02697, PK3CG_PIG ; //