PI-PLC can hydrolyze phosphatidylinositol 4, 5-bisphosphate ( PIP2 ) into two second messengers, DAG and IP3. About ten isoenzymes of PLC have been found.

• PI-PLC的作用是水解磷脂酰肌醇4,5-二磷酸(PIP2)生成两个细胞内重要的第二信使DAG和1,4,5-三磷酸肌醇(IP3)。