Int Microbiol. 2000 Jun;3(2):113-6.

Changes in protein synthesis and acid tolerance in Clostridium perfringens type A in response to acid shock.

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Faculty of Biological Sciences, Autonomous University of Nuevo León, San Nicolás, México.

Abstract

The induction of acid-shock proteins and the degree of acid resistance conferred on Clostridium perfringens by acid shock, and the kinetics of this resistance were determined. A sublethal acid shock at pH 4.5 for 20 min increased the acid tolerance of cells at least fifteenfold. The acquired tolerance was maintained for 3 h after acid treatment. The response of the microorganism to acid shock was also examined by analysis of pulse-labeled proteins. Five acid-shock proteins (molecular weights 120, 84, 58, 45 and 17 kDa) were identified by polyacrylamide gel electrophoresis.

PMID:: 11001541; [PubMed - indexed for MEDLINE]

Publication Types, MeSH Terms, Substances

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Research Support, Non-U.S. Gov't

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Bacterial Proteins

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