PLCβ3 also known as PLCB3 is a member of the phosphoinositide phospholipase C beta enzyme family. PLCβ3 plays a vital role in cellular signaling pathways by catalyzing the hydrolysis of phosphatidylinositol 4, 5-bisphosphate into inositol 1, 4, 5-trisphosphate and diacylglycerol, which are crucial second messengers in regulating various physiological processes, including cell growth, differentiation, and apoptosis. PLCβ3 is predominantly located in the plasma membrane, where PLCβ3 interacts with G protein-coupled receptors and is activated by Gq class heterotrimeric G proteins, highlighting its importance in mediating receptor signaling. PLCβ3 presence in various tissues underscores its significance in both normal physiology and pathological conditions, making PLCβ3 a valuable target for research and therapeutic applications.