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J Bacteriol. 1973 October; 116(1): 257-262
Copyright © 1973 American Society for Microbiology. All Rights Reserved.

Effects of External Osmolarity on Phospholipid Metabolism in Escherichia coli B¹

^a Division of Research, National Jewish Hospital and Research Center, Denver, Colorado 80206
Department of Biophysics and Genetics, University of Colorado Medical Center, Denver, Colorado 80220

ABSTRACT

The turnover of total [³²P]phospholipids in Escherichia coli B is shown to be inversely related to the osmolarity of the medium and a reflection of the rates of turnover of the major phospholipid classes, phosphatidylglycerol and phosphatidylethanolamine. External osmolarity also affects the phosphatidylglycerol content of the culture. These results suggest that alterations in the metabolism of membrane phospholipids may be part of the process of adaptation to the external osmotic environment.

¹ This paper is publication 536 of the Department of Biophysics and Genetics, Univ. of Colorado Medical Center, Denver.