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Article

A thermophilic bacterial origin and subsequent constraints by redox, light and salinity on the evolution of the microbial mercuric reductase.

Environmental microbiology - 1 Nov 2010

Barkay Tamar, Kritee K, Boyd Eric, Geesey Gill

Abstract excerpt

Mercuric reductase (MerA) is central to the mercury (Hg) resistance (mer) system, catalyzing the reduction of ionic Hg to volatile Hg(0). A total of 213 merA homologues were identified in sequence databases, the majority of which belonged to microbial lineages that occupy oxic environments. merA was absent among phototrophs and in lineages that inhabit anoxic environments. Phylogenetic reconstructions of MerA...

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Identifiers

PMID: 20545753
DOI: 10.1111/j.1462-2920.2010.02260.x

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