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J Bacteriol. 1979 June; 138(3): 923-932

Transient growth inhibition of Escherichia coli K-12 by ion chelators: "in vivo" inhibition of ribonucleic acid synthesis.

ABSTRACT

The ion chelators picolinic acid, quinaldic acid, 1,10-phenanthroline, and 8-hydroxyquinoline, but not ethylenediaminetetraacetate, ethyleneglycol-bis-(beta-aminoethyl ether)-N,N-tetraacetate, or dipicolinic acid, rapidly but transiently arrest growth of Escherichia coli K-12. Cells adapt and become resistant to growth inhibition by these agents, a process which requires protein synthesis. Mn2+, at low concentrations, decreases the time required for resumption of growth. Proteins synthesized during the lag are quantitatively and qualitatively different from those synthesized during normal growth. Inhibition of growth can explained by an effect on RNA polymerase, a known metalloenzyme.

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