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J Bacteriol. 1972 December; 112(3): 1193-1200
Copyright © 1972 American Society for Microbiology. All Rights Reserved.

Lipids of Thermoplasma acidophilum

Thomas A. Langworthy, Paul F. Smith and William R. Mayberry

Department of Microbiology, School of Medicine, University of South Dakota, Vermillion, South Dakota 57069

ABSTRACT

Cells of Thermoplasma acidophilum contain about 3% total lipid on a dry weight basis. Total lipid was found to contain 17.5% neutral lipid, 25.1% glycolipid, and 56.6% phospholipid by chromatography on silicic acid. The lipids contain almost no fatty acid ester groups but appear to have long-chain alkyl groups in ether linkages to glycerol. The phospholipid fraction includes a major component which represents about 80% of the lipid phosphorus and 46% of the total lipids. We believe this component to be a long-chain isopranol glycerol diether analogue of glycerolphosphoryl monoglycosyl diglyceride. The glycolipids appear to contain isopranol diether analogues. Several components of the complex, neutral lipid fraction have been identified as hydrocarbons, vitamin K2-7, and isopranol glycerol diether analogues. Sterols are present in the neutral lipids but do not appear to be synthesized by the organism.

J Bacteriol. 1972 December; 112(3): 1193-1200
Copyright © 1972 American Society for Microbiology. All Rights Reserved.



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