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Role of branched-chain fatty acids in pH stress tolerance in Listeria monocytogenes

Giotis, E S, McDowell, DA, Blair, I S and Wilkinson, B J (2007) Role of branched-chain fatty acids in pH stress tolerance in Listeria monocytogenes. Applied and Environmental Microbiology, 73 (3). pp. 997-1001. [Journal article]

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DOI: 10.1128/AEM.00865-06

Abstract

In alkaline conditions, Listeria monocytogenes cells develop higher proportions of branched-chain fatty acids (FAs), including more anteiso forms. In acid conditions, the opposite occurs. Reduced growth of pH-sensitive mutants at adverse pH (5.0/9.0) was alleviated by the addition of 2 -methylbutyrate (an anteiso-FA precursor), suggesting that anteiso-FAs are important in adaptation to adverse pH. The balance between anteiso- and iso-FAs may be more important than changes in the amounts and/or degrees of saturation of FAs in pH adaptation.

Item Type:Journal article
Keywords:membrane-lipid-composition streptococcus-mutans bacillus-subtilis escherichia-coli enhance survival low-temperatures growth adaptation resistance biosynthesis
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Health Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute
ID Code:27622
Deposited By: Professor David McDowell
Deposited On:24 Oct 2013 16:31
Last Modified:17 Oct 2017 16:11

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