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Carotenoids in yellow-pigmented enterococci.

R F Taylor, M Ikawa, W Chesbro

    Journal of Bacteriology
    |February 1, 1971
    PubMed
    Summary
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    Yellow enterococci bacteria produce pigments identified as carotenoids. A unique C32 carotenoid aldehyde is the primary pigment found in these enterococcal strains.

    Area of Science:

    • Microbiology
    • Natural Product Chemistry

    Background:

    • Enterococci are Gram-positive bacteria commonly found in the gut microbiota.
    • Some bacterial species synthesize pigments, including carotenoids, which can have various biological functions.

    Purpose of the Study:

    • To characterize the pigments produced by three strains of yellow enterococci.
    • To identify the chemical nature of these pigments.

    Main Methods:

    • Extraction of pigments from enterococcal strains.
    • Spectroscopic analysis to determine pigment characteristics.
    • Solvent partitioning to assess pigment properties.

    Main Results:

    • Pigments exhibited spectral and solvent partition properties consistent with carotenoids.

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  • An unusual C32 carotenoid aldehyde was identified as the predominant pigment.

    • Conclusions:

    • Yellow enterococci synthesize carotenoid pigments.
    • The predominant pigment is a novel C32 carotenoid aldehyde, suggesting unique biosynthetic pathways in these bacteria.