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Appl Environ Microbiol. 2011 Jul;77(13):4685-92. doi: 10.1128/AEM.02884-10. Epub 2011 May 13.

Unsuspected diversity of arsenite-oxidizing bacteria as revealed by widespread distribution of the aoxB gene in prokaryotes.

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1
Laboratoire de Génétique Moléculaire, Génomique, Microbiologie, Département Microorganismes, Génomes, Environnement, UMR7156 Université de Strasbourg/CNRS, 28 Rue Goethe, 67083 Strasbourg Cedex, France.

Abstract

In this study, new strains were isolated from an environment with elevated arsenic levels, Sainte-Marie-aux-Mines (France), and the diversity of aoxB genes encoding the arsenite oxidase large subunit was investigated. The distribution of bacterial aoxB genes is wider than what was previously thought. AoxB subfamilies characterized by specific signatures were identified. An exhaustive analysis of AoxB sequences from this study and from public databases shows that horizontal gene transfer has likely played a role in the spreading of aoxB in prokaryotic communities.

PMID:
21571879
PMCID:
PMC3127681
DOI:
10.1128/AEM.02884-10
[Indexed for MEDLINE]
Free PMC Article

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