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Applied and Environmental Microbiology, March 2008, p. 1954-1958, Vol. 74, No. 6
0099-2240/08/$08.00+0     doi:10.1128/AEM.02294-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.

The ygaVP Genes of Escherichia coli Form a Tributyltin-Inducible Operon{triangledown} ,{dagger}

Hervé Gueuné,1,3 Marie-José Durand,1 Gérald Thouand,1 and Michael S. DuBow2*

Université de Nantes, CNRS UMR 6144, GEPEA, ERT CBAC, Département Génie Biologique, 18 Bd. Gaston Defferre, 85035 La Roche sur Yon, France,1 Université Paris-Sud 11, CNRS UMR 8621, Institut de Génétique et Microbiologie, Bâtiment 409, 91405 Orsay, France,2 Biolumine SA, Site Universitaire de la Courtaisière, Département Génie Biologique,18 Bd. Gaston Defferre, 85035 La Roche sur Yon, France3

Received 9 October 2007/ Accepted 16 January 2008

A tributyltin (TBT) luxAB transcriptional fusion in Escherichia coli revealed that a TBT-activated promoter is located upstream of two cotranscribed orphan genes, ygaV and ygaP. We demonstrate that transcription from the promoter upstream of ygaVP is constitutive in a ygaVP mutant, suggesting that YgaV is an autoregulated, TBT-inducible repressor.

* Corresponding author. Mailing address: Université Paris-Sud 11, CNRS UMR 8621, Institut de Génétique et Microbiologie, Bâtiment 409, 91405 Orsay, France. Phone: (33) 1 69 15 46 12. Fax: (33) 1 69 15 78 08. E-mail: michael.dubow{at}igmors.u-psud.fr

{triangledown} Published ahead of print on 1 February 2008.

{dagger} Supplemental material for this article may be found at http://aem.asm.org/.

Applied and Environmental Microbiology, March 2008, p. 1954-1958, Vol. 74, No. 6
0099-2240/08/$08.00+0     doi:10.1128/AEM.02294-07
Copyright © 2008, American Society for Microbiology. All Rights Reserved.





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