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Appl Environ Microbiol. 2008 Jan;74(2):535-9. Epub 2007 Nov 26.

The BaeSR two-component regulatory system mediates resistance to condensed tannins in Escherichia coli.

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1
Department of Animal Sciences and Division of Nutritional Sciences, Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA.

Abstract

The gene expression profiles of Escherichia coli strains grown anaerobically with or without Acacia mearnsii (black wattle) extract were compared to identify tannin resistance strategies. The cell envelope stress protein gene spy and the multidrug transporter-encoding operon mdtABCD, both under the control of the BaeSR two-component regulatory system, were significantly up-regulated in the presence of tannins. BaeSR mutants were more tannin sensitive than their wild-type counterparts.

PMID:
18039828
PMCID:
PMC2223256
DOI:
10.1128/AEM.02271-07
[Indexed for MEDLINE]
Free PMC Article
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