J Appl Bacteriol. 1991 Jun;70(6):507-11.

Decreased DNA damage by acid and increased repair of acid-damaged DNA in acid-habituated Escherichia coli.

Raja N, Goodson M, Smith DG, Rowbury RJ.

Source

Biology Department, University College London, UK.

Abstract

A study of the conjugal transfer of ColV,I-K94 tn 10 from acid-treated donors suggested that acid-habituated recipients repair acid-damaged plasmid DNA better than those that are not habituated. The presence of an increased repair activity for acid-damaged DNA in habituated cells was confirmed by isolating pBR322 from acid-treated organisms; habituated cells produced more transformants when transformed by it than did non-habituated ones. Additionally, agarose gel electrophoretic studies of pBR322 DNA isolated from acid-damaged cells and tests of its transforming activity both indicated that plasmid DNA in habituated cells is less damaged by extreme acidity than is that in non-habituated organisms.

PMID:: 1938675; [PubMed - indexed for MEDLINE]

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MeSH Terms

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DNA, Bacterial

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