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Biochemistry of the polyamines.

J C Allen

    Cell Biochemistry and Function
    |October 1, 1983
    PubMed
    Summary

    Polyamines are crucial for cell proliferation, with their biosynthesis tightly regulated. Oxidized forms act as mitotic inhibitors, highlighting their complex roles in cell division and biochemistry.

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    Area of Science:

    • Biochemistry
    • Cell Biology
    • Molecular Biology

    Background:

    • Naturally occurring polyamines are essential molecules found in various forms within cells.
    • Their synthesis is tightly regulated, with ornithine decarboxylase identified as a key regulatory enzyme.
    • Polyamines play critical roles in fundamental cellular processes, including proliferation.

    Purpose of the Study:

    • To review the chemistry and biochemistry of polyamines.
    • To elucidate the roles of polyamines in cell proliferation.
    • To explore the mechanisms by which oxidized polyamines inhibit mitosis.

    Main Methods:

    • Studies utilizing selective inhibitors to investigate polyamine function.
    • Biochemical analysis of polyamine synthesis, degradation, and interactions.
    • Review of existing literature on polyamine effects on cell division.

    Main Results:

    • Polyamines are essential for cell proliferation, with biosynthesis subject to sensitive control.
    • Ornithine decarboxylase is a key regulatory protein in polyamine biosynthesis.
    • Oxidized polyamines demonstrate potent mitotic inhibitory effects.
    • Polyamines can be synthesized or degraded intracellularly and interact with macromolecules via cationic groups.

    Conclusions:

    • Polyamines are vital for cell proliferation and their regulation is critical.
    • Oxidized polyamines represent a distinct class of molecules with significant impact on cell division.
    • The unique chemical properties of polyamines, including their cationic nature and ability to form covalent bonds, underpin their diverse biological functions.

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