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Ionomycin, a new polyether antibiotic

W C Liu, D S Slusarchyk, G Astle

    The Journal of Antibiotics
    |September 1, 1978
    PubMed
    Summary
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    Ionomycin, a novel polyether antibiotic, was isolated from Streptomyces conglobatus. This calcium-binding antibiotic exhibits unique UV absorption and activity against Gram-positive bacteria.

    Area of Science:

    • Microbiology
    • Natural Products Chemistry
    • Pharmacology

    Background:

    • Polyether antibiotics are a class of compounds with diverse biological activities.
    • Streptomyces species are known producers of various antibiotics.
    • Calcium ionophores play crucial roles in cellular processes.

    Purpose of the Study:

    • To isolate and characterize a novel polyether antibiotic from Streptomyces conglobatus.
    • To determine the unique properties and antibacterial spectrum of the new antibiotic.

    Main Methods:

    • Isolation of the antibiotic using solvent extraction from fermentation broths.
    • Characterization of the antibiotic's chemical structure and properties.
    • Determination of its UV absorption spectrum and antibacterial activity.

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    Main Results:

    • A new polyether antibiotic, ionomycin, was obtained in pure form.
    • Ionomycin exhibits a unique UV absorption maximum at 300 nm.
    • The calcium salt of ionomycin has the molecular formula C41H70O9Ca.
    • Ionomycin demonstrates activity against Gram-positive bacteria.

    Conclusions:

    • Ionomycin is a novel polyether antibiotic with distinct chemical and spectral properties.
    • Its high affinity for calcium ions and narrow-spectrum activity against Gram-positive bacteria are notable.
    • Ionomycin represents a new addition to the class of calcium-binding antibiotics.