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  • Title: Extraction, characterization, and cellular localization of the lipids of Staphylococcus aureus.
    Author: White DC, Frerman FE.
    Journal: J Bacteriol; 1967 Dec; 94(6):1854-67. PubMed ID: 4965365.
    Abstract:
    Satisfactory extraction and assay procedures have been developed for the lipids of Staphylococcus aureus. The following lipids have been characterized in detail: the vitamin K(2), which is shown to exist as isoprenologues with side chains of 35, 40, and 45 carbon atoms; monoglucosyldiglyceride and diglucosyldiglyceride, which account for all the carbohydrate in the lipid extracts; the lysyl ester of phosphatidyl glycerol, phosphatidyl glycerol, and cardiolipin, which account for 98% of the phosphate in the lipid extract. The extraction procedure removes 98% of the total bacterial fatty acids. Acidification of the medium before harvest and refluxing in isopropanol are critical in the extraction procedure for the maximal recovery of lysyl-phosphatidyl glycerol and the glucolipids. The lipids have been shown to be a part of the same membrane as the respiratory pigments.
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