Effect of Preirradiation Ribonucleic Acid Synthesis Inhibition on Resistance to Ultraviolet Light with Resistant and Sensitive Strains of Escherichia Coli B-r

Overview

Journal J Bacteriol

Publisher American Society for Microbiology

Specialty Microbiology

Date 1974 Jul 1

PMID 4600696

Citations 1

Authors

J M Rude

C O DOUDNEY

Affiliations

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Abstract

The ultraviolet resistance of a streptolydigin-susceptible strain of Escherichia coli B/r hcr(-) increased during preirradiation treatment with streptolydigin (an inhibitor of deoxyribonucleic acid-dependent ribonucleic acid polymerase) for 20 min and then remained constant. During preirradiation treatment with chloramphenicol (an inhibitor of protein synthesis), resistance to ultraviolet light increased for 1 to 2 h, and reached a maximal level significantly above that attained in streptolydigin-containing medium. These results suggest that there are two mechanisms that function in Hcr(-) cells during chloramphenicol treatment which contribute to the concomitant ultraviolet resistance enhancement. One is ribonucleic acid dependent and is inhibited by streptolydigin. This ribonucleic acid-dependent mechanism appears to be absent in wild-type and RecA E. coli B/r strains.

Citing Articles

tif-Stimulated deoxyribonucleic acid repair in Escherichia coli K-12.

Castellazzi M, Jacques M, George J J Bacteriol. 1980; 143(2):703-9.

PMID: 6451614 PMC: 294344. DOI: 10.1128/jb.143.2.703-709.1980.

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