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J Bacteriol. 1965 May; 89(5): 1387-1392
Copyright © 1965 American Society for Microbiology. All Rights Reserved.

Lysis of Bacterial Protoplasts and Spheroplasts by Staphylococcal {alpha}-Toxin and Streptolysin S

Alan W. Bernheimer and Lois L. Schwartz

Department of Microbiology, New York University School of Medicine, New York, New York

ABSTRACT

BERNHEIMER, ALAN W. (New York University School of Medicine, New York, N.Y.), AND LOIS L. SCHWARTZ. Lysis of bacterial protoplasts and spheroplasts by staphylococcal {alpha}-toxin and streptolysin S. J. Bacteriol. 89:1387–1392. 1965.—Protoplasts of Bacillus megaterium, Sarcina lutea, and Streptococcus pyogenes, and spheroplasts of Escherichia coli were lysed by staphylococcal {alpha}-toxin, whereas spheroplasts of Vibrio metschnikovii and V. comma were not. In the spectrum of its lytic action, streptolysin S qualitatively resembled staphylococcal {alpha}-toxin except for failure to lyse S. pyogenes protoplasts. In contrast to the two foregoing agents, streptolysin O did not lyse protoplasts and spheroplasts. The observations are interpreted in relation to similarities and differences in lipid composition of bacterial and mammalian cell membranes.

J Bacteriol. 1965 May; 89(5): 1387-1392
Copyright © 1965 American Society for Microbiology. All Rights Reserved.



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