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Permeability Changes in the Cytoplasmic Membrane of Escherichia Coli K-12 Early After Infection with Bacteriophage T1

Overview
Journal J Bacteriol
Specialty Microbiology
Date 1984 Oct 1
PMID 6384195
Citations 8
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Abstract

The nature of the bacteriophage T1-induced changes in the permeability of the cytoplasmic membrane of Escherichia coli K-12 was investigated. At 20 degrees C and with glucose as a substrate, the addition of one bacteriophage per cell induced a complete and irreversible loss of K+ ions (single-hit phenomenon). K+ loss was compensated by an uptake of Na+, Li+, or choline by the cell, depending on which of these ions was the major cation in the medium. T1 depolarized the cells and inhibited 86Rb+-K+ exchange across the cytoplasmic membrane. The loss of K+ occurred independently of the Mg2+ concentration in the medium. By contrast, at low but not at high Mg2+ concentrations, T1 caused efflux of Mg2+ which in turn caused inhibition of respiration and a decrease of delta pH.

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