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An acceptor-dependent polyglycerolphosphate polymerase.

J Mauck, L Glaser

    Proceedings of the National Academy of Sciences of the United States of America
    |September 1, 1972
    PubMed
    Summary
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    Researchers isolated a heat-stable factor essential for polyglycerolphosphate polymerase activity from Bacillus subtilis membranes. This factor acts as a glycerolphosphate acceptor, aiding in enzyme function and purification.

    Area of Science:

    • Biochemistry
    • Microbiology
    • Enzymology

    Background:

    • Polyglycerolphosphate polymerase is crucial for cell wall synthesis in bacteria.
    • Enzyme activity is often regulated by cofactors or accessory proteins.
    • Bacillus subtilis is a model organism for studying bacterial physiology.

    Purpose of the Study:

    • To describe a method for extracting and purifying polyglycerolphosphate polymerase from Bacillus subtilis.
    • To identify and characterize the heat-stable factor required for enzyme activity.

    Main Methods:

    • Enzyme extraction from Bacillus subtilis cell membranes.
    • Purification using ion-exchange chromatography.
    • Isolation and partial characterization of a heat-stable cofactor.

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    Main Results:

    • A method for polyglycerolphosphate polymerase extraction was established.
    • An enzyme fraction dependent on a heat-stable factor was obtained.
    • The heat-stable factor, an acceptor of glycerolphosphate units, was isolated from cell membranes and found to contain glycerolphosphate, glucosamine, and fatty acids.

    Conclusions:

    • A heat-stable factor is essential for polyglycerolphosphate polymerase activity in Bacillus subtilis.
    • This factor functions as a glycerolphosphate acceptor.
    • The precise chemical structure of the acceptor requires further elucidation.