catalytic activity:1-phosphatidyl-1D-myo-inositol 4 ,5-bisphosphate + H (2) O = 1D-myo-inositol 1 ,4 ,5-trisphosphate + diacylglycerol. ,cofactor:Calcium. ,function:The production of the second messenger molecules diacylglycerol (DAG) and inositol 1 ,4 ,5-trisphosphate (IP3) is mediated by activated phosphatidylinositol-specific phospholipase C enzymes. ,similarity:Contains 1 C2 domain. ,similarity:Contains 1 PI-PLC X-box domain. ,similarity:Contains 1 PI-PLC Y-box domain. ,subunit:Interacts with SHANK2 (By similarity) . Interacts with LPAR2. ,
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