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Journal of Bacteriology, April 2004, p. 2200-2205, Vol. 186, No. 7
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.7.2200-2205.2003
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Evidence for Multiple Levels of Regulation of Oenococcus oeni clpP-clpL Locus Expression in Response to Stress

Charlotte Beltramo, Cosette Grandvalet, Fabrice Pierre,{dagger} and Jean Guzzo*

Laboratoire de Microbiologie, UMR-UB-INRA 1232, 21 000 Dijon, France

Received 13 November 2003/ Accepted 23 December 2003

A locus containing the clpP and clpL genes in the lactic acid bacterium Oenococcus oeni was studied. Real-time reverse transcription-PCR analysis revealed different induction factors involved in expression of these genes during stress. According to the conditions, clpP and clpL genes could be transcripted as two distinct transcripts or cotranscripted. The clpP promoter depended on the CtsR regulator, but surprisingly the clpL promoter did not. The amount of the clpL transcript depended on mRNA stability. This clp ATPase gene is at least controlled at the posttranscriptional level.

* Corresponding author. Mailing address: Laboratoire de Microbiologie, UMR-UB-INRA 1232, ENSBANA, 1 Esplanade Erasme, 21 000 Dijon, France. Phone: 33 3 80 39 66 75. Fax: 33 3 80 39 66 75. E-mail: jean.guzzo{at}u-bourgogne.fr.

{dagger} Present address: Equipe Aliment et Cancer, UMR INRA-ENVT 1089, Toulouse, France.

Journal of Bacteriology, April 2004, p. 2200-2205, Vol. 186, No. 7
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.7.2200-2205.2003
Copyright © 2004, American Society for Microbiology. All Rights Reserved.



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  • Grandvalet, C., Coucheney, F., Beltramo, C., Guzzo, J. (2005). CtsR Is the Master Regulator of Stress Response Gene Expression in Oenococcus oeni. J. Bacteriol. 187: 5614-5623 [Abstract] [Full Text]  
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