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. 1985 Aug;28(2):200–206. doi: 10.1128/aac.28.2.200

Membrane permeability changes associated with DNA gyrase inhibitors in Escherichia coli.

T J Dougherty, J J Saukkonen
PMCID: PMC180219  PMID: 3010837

Abstract

Inhibition of DNA synthesis in Escherichia coli B/r by a DNA gyrase inhibitor results in cell death after a 50-min lag period. Examination of the cells under phase-contrast and electron microscopes revealed that they appeared to undergo plasmolysis coincident with the onset of cell death. The inhibited cells were also found to become susceptible to low levels of detergent at this time. With a fluorescent membrane probe, the level of membrane permeability was assessed and found to increase concurrently with the decrease in culture viability. Analysis of the cell envelope constituents revealed that, other than a shift in the protein/lipid ratio, the compositions of the cell membranes were unperturbed.

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Selected References

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