Ip3

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IP3 (Inositol 1,4,5-trisphosphate) is a cleavage product of phosphatidylinositol 4,5-bisphosphate (PIP₂). PIP₂ is a phospholipid molecule cleaved into inositol 1,4,5-trisphosphate and diacylglycerol (DAG) by phospholipase C after hormone binding to the receptor. Inositol 1,4,5-trisphosphate binds to IP3 receptor which results to the release of calcium from the calcium pumps.

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