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FEMS Microbiol Lett. 2013 Jan;338(1):86-94. doi: 10.1111/1574-6968.12032. Epub 2012 Nov 16.

Identification of type II toxin-antitoxin modules in Burkholderia pseudomallei.

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1
Department of Biosciences, College of Life and Environmental Sciences, University of Exeter, Exeter, UK.

Abstract

Type II toxin-antitoxin (TA) systems are believed to be widely distributed amongst bacteria although their biological functions are not clear. We have identified eight candidate TA systems in the genome of the human pathogen Burkholderia pseudomallei. Five of these were located in genome islands. Of the candidate toxins, BPSL0175 (RelE1) or BPSS1060 (RelE2) caused growth to cease when expressed in Escherichia coli, whereas expression of BPSS0390 (HicA) or BPSS1584 (HipA) (in an E. coli ΔhipBA background) caused a reduction in the number of culturable bacteria. The cognate antitoxins could restore growth and culturability of cells.

PMID:
23082999
DOI:
10.1111/1574-6968.12032
[Indexed for MEDLINE]
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