Phospholipase C (PLC) is a critical enzyme involved in the hydrolysis of phospholipids. This enzyme plays a significant role in the signal transduction pathways, converting phosphatidylinositol 4,5-bisphosphate (PIP2) into diacylglycerol (DAG) and inositol trisphosphate (IP3). These products act as secondary messengers in various cellular processes, including cell growth, differentiation, and metabolism.