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Journal of Bacteriology, December 2006, p. 8662-8665, Vol. 188, No. 24
0021-9193/06/$08.00+0     doi:10.1128/JB.01312-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

BadM Is a Transcriptional Repressor and One of Three Regulators That Control Benzoyl Coenzyme A Reductase Gene Expression in Rhodopseudomonas palustris{triangledown}

Caroline M. Peres1 and Caroline S. Harwood2*

Department of Microbiology, University of Washington, Seattle, Washington 98195-7242,2 Danisco Genencor, 925 Page Mill Road, Palo Alto, California 943041

Received 17 August 2006/ Accepted 4 October 2006

The rate-limiting enzyme of anaerobic benzoate degradation by Rhodopseudomonas palustris, benzoyl coenzyme A (CoA) reductase, is highly sensitive to oxygen, and its synthesis is tightly regulated. We determined that a previously unknown gene in the benzoate gene cluster, badM, encodes a transcriptional repressor of benzoyl-CoA reductase gene expression. BadM controls gene expression from the benzoyl-CoA reductase promoter in concert with two previously described transcriptional activators.

* Corresponding author. Mailing address: Department of Microbiology, Box 357242, 1959 N. E. Pacific Street, University of Washington, Seattle, WA 98195-7242. Phone: (206) 221-2848. Fax: (206) 221-5041. E-mail: csh5{at}u.washington.edu.

{triangledown} Published ahead of print on 13 October 2006.

Journal of Bacteriology, December 2006, p. 8662-8665, Vol. 188, No. 24
0021-9193/06/$08.00+0     doi:10.1128/JB.01312-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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