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Applied and Environmental Microbiology, May 2009, p. 3362-3365, Vol. 75, No. 10
0099-2240/09/$08.00+0     doi:10.1128/AEM.00336-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.

Cloning and In Situ Expression Studies of the Hydrogenobaculum Arsenite Oxidase Genes{triangledown}

Scott R. Clingenpeel,1 Seth D'Imperio,1 Harry Oduro,2 Greg K. Druschel,2 and Timothy R. McDermott1*

Thermal Biology Institute and Department of Land Resources and Environmental Sciences, Montana State University, Bozeman, Montana 59717,1 Department of Geology, University of Vermont, Burlington, Vermont 054052

Received 10 February 2009/ Accepted 12 March 2009

Novel arsenite [As(III)] oxidase structural genes (aoxAB) were cloned from Hydrogenobaculum bacteria isolated from an acidic geothermal spring. Reverse transcriptase PCR demonstrated expression throughout the outflow channel, and the aoxB cDNA clones exhibited distribution patterns relative to the physicochemical gradients in the spring. Microelectrode analyses provided evidence of quantitative As(III) transformation within the microbial mat.

* Corresponding author. Mailing address: Department of Land Resources & Environmental Sciences, Montana State University, Bozeman, MT 59717. Phone: (406) 994-2190. Fax: (406) 994-9333. E-mail: timmcder{at}montana.edu

{triangledown} Published ahead of print on 20 March 2009.

Applied and Environmental Microbiology, May 2009, p. 3362-3365, Vol. 75, No. 10
0099-2240/09/$08.00+0     doi:10.1128/AEM.00336-09
Copyright © 2009, American Society for Microbiology. All Rights Reserved.





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