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Overview of organohalide-respiring bacteria and a proposal for a classification system for reductive dehalogenases.


ABSTRACT: Organohalide respiration is an anaerobic bacterial respiratory process that uses halogenated hydrocarbons as terminal electron acceptors during electron transport-based energy conservation. This dechlorination process has triggered considerable interest for detoxification of anthropogenic groundwater contaminants. Organohalide-respiring bacteria have been identified from multiple bacterial phyla, and can be categorized as obligate and non-obligate organohalide respirers. The majority of the currently known organohalide-respiring bacteria carry multiple reductive dehalogenase genes. Analysis of a curated set of reductive dehalogenases reveals that sequence similarity and substrate specificity are generally not correlated, making functional prediction from sequence information difficult. In this article, an orthologue-based classification system for the reductive dehalogenases is proposed to aid integration of new sequencing data and to unify terminology.

SUBMITTER: Hug LA 

PROVIDER: S-EPMC3638463 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature

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Overview of organohalide-respiring bacteria and a proposal for a classification system for reductive dehalogenases.

Hug Laura A LA   Maphosa Farai F   Leys David D   Löffler Frank E FE   Smidt Hauke H   Edwards Elizabeth A EA   Adrian Lorenz L  

Philosophical transactions of the Royal Society of London. Series B, Biological sciences 20130311 1616


Organohalide respiration is an anaerobic bacterial respiratory process that uses halogenated hydrocarbons as terminal electron acceptors during electron transport-based energy conservation. This dechlorination process has triggered considerable interest for detoxification of anthropogenic groundwater contaminants. Organohalide-respiring bacteria have been identified from multiple bacterial phyla, and can be categorized as obligate and non-obligate organohalide respirers. The majority of the curr  ...[more]

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