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    Home > Biochemistry News > Biotechnology News > Measurement of Inositol (Poly)phosphate Formation Using [3H]Inositol Labeling Protocols in Permeabilized Cells

    Measurement of Inositol (Poly)phosphate Formation Using [3H]Inositol Labeling Protocols in Permeabilized Cells

    • Last Update: 2020-12-02
    • Source: Internet
    • Author: User
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    Hormones, neurotransmitters, chemoattractants, and growth factors all elicit intracellular responses, on binding to cell surface receptors, by activating inositol phospholipid-specific phospholipase C (PLC). Activated PLC catalyzes the hydrolysis of phosphatidylinositol bisphosphate (PIP
    2
    ), a minor membrane phospholipid, to form two second messengers, diacylglycerol (DAG) and inositol (1,4,5)trisphosphate [Ins(1,4,5,)P
    3
    ]. DAG is a direct activator of protein kinase C isozymes, Ins(1,4,5)P
    3
    mobilizes intracellular Ca
    2+
    . G protein-coupled receptors couple to the PLC-β family via G proteins, and tyrosine kinase receptors activate PLCγ isozymes (
    1
    ). Regardless of the PLC isozyme activated, the product is invariantly Ins(1,4,5)P
    3
    .
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