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Lipolytic esterases in staphylococci.

B A Saggers, G T Stewart

    Journal of Bacteriology
    |October 1, 1968
    PubMed
    Summary

    Staphylococci possess a flexible enzyme system that breaks down lipids, aiding their survival on skin. This lipolytic mechanism is distinct from pathogenicity markers and resistant to certain inhibitors.

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    Area of Science:

    • Microbiology
    • Biochemistry

    Background:

    • Staphylococci are bacteria known for their ability to colonize mammalian skin.
    • Lipid metabolism plays a role in bacterial survival and pathogenesis.

    Purpose of the Study:

    • To characterize the lipolytic enzyme complex produced by staphylococci.
    • To investigate the relationship between lipolysis and staphylococcal pathogenicity.

    Main Methods:

    • Enzyme assays were performed on various lipid substrates.
    • The activity of lipase and esterase components was analyzed.
    • Susceptibility to organophosphorus inhibitors was tested.
    • Correlation with pathogenicity markers like coagulase and toxin production was assessed.

    Main Results:

    • Staphylococci produce a two-component enzyme complex: lipase and esterase.
    • Enzyme activity is influenced by substrate properties (chain length, solubility, pH) and dispersion.
    • The staphylococcal esterase shows lower susceptibility to organophosphorus inhibitors compared to mammalian esterases.
    • No direct correlation was found between lipolytic activity and key pathogenicity markers.

    Conclusions:

    • The flexible lipolytic mechanism of staphylococci contributes to their persistence in lipid-rich skin environments.
    • Lipolysis is a key adaptation for staphylococcal survival, independent of virulence factors.

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