Phospholipase C (PLC) (E.C. 18.104.22.168) represents a group of enzymes that catalyze the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) to inositol 1,4,5-trisphosphate (IP3) and 1,2-diacylglycerol (DAG). IP3 and DAG both have important second messenger functions.
There are numerous subtypes of phospholipase C; PLCβ1-4, PLCγ1-2, PLCδ1-4, PLCε1, PLCζ1 and PLCη1-2, all which require Ca2+ ions for catalytic activity. PLC-β is primarily activated by Gq/11 proteins and PLC-γ is activated by tyrosine kinase-mediated phosphorylation in response to a variety of growth factor and immune system signals. PLCε represents a convergence of the 7-TM and receptor tyrosine kinase signaling pathways.
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Literature for Phospholipase C
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