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  • Title: Effect of phenoxyethanol on the permeability of Escherichia coli NCTC 5933 to inorganic ions.
    Author: Gilbert P, Beveridge EG, Crone PB.
    Journal: Microbios; 1977; 19(75):17-26. PubMed ID: 357929.
    Abstract:
    Concentrations of phenoxyethanol which retarded the growth rate of Escherichia coli NCTC 5933 in nutrient broth, stimulated the rates of respiration and total oxygen uptake of cell suspensions with glucose as carbon source, and were able to dissipate artificially induced membrane proton gradients. In cells with repressed oxidative phosphorylating activity, no stimulation of respiration was observed. These actions were characteristic of uncouples of oxidative phosphorylation. Similar concentrations of the drug caused additional increased permeability of the cytoplasmic membrane to K+ but not to Li+, Na+, Ca++, Mg++, NO-3, Cl-, So--4, or PO---4. Drug induced permeability of the membrane to protons and potassium ions were not found to be directly coupled.
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