Inositol 1,4,5-triphosphate (IP3) is a second messenger produced by phospholipase C (PLC) metabolism of phosphoinositol 4,5-bisphosphate (PIP2) (Canossa et al. 2001).
Canossa, M, Gartner, A, Campana, G, Inagaki, N, Thoenen, H
phosphatidylinositol phospholipase C activity of p-Plcg1 [plasma membrane]
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