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Journal of Bacteriology, April 2006, p. 3130-3133, Vol. 188, No. 8
0021-9193/06/$08.00+0     doi:10.1128/JB.188.8.3130-3133.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Sigma L Is Important for Cold Shock Adaptation of Bacillus subtilis

Frank Wiegeshoff,1 Carsten L. Beckering,1 Michel Debarbouille,2 and Mohamed A. Marahiel1*

Philipps-Universität Marburg, FB Chemie-Biochemie, Hans-Meerwein-Str., D-35032 Marburg, Germany,1 Biologie des bacteries pathogenes a gram positif, Departement de Microbiologie fondamentale et Medicale (CNRS, URA 2172) Institut Pasteur, Paris 75724, France2

Received 28 November 2005/ Accepted 23 January 2006

Although sigma factor-dependent transcriptional regulation was shown to be essential for adaptation to different environmental stimuli, no such sigma factor has been related to the regulation of the cold shock response in Bacillus subtilis. In this study, we present genetic evidence for participation of {sigma}L ({sigma}54) and the two {sigma}L-dependent transcriptional enhancers BkdR and YplP in the cold shock response of Bacillus subtilis JH642. Single-gene deletion of either sigL, bkdR, or yplP resulted in a cold-sensitive phenotype.

* Corresponding author. Mailing address: Philipps-Universität Marburg, FB Chemie-Biochemie, Hans-Meerwein-Str., D-35032 Marburg, Germany. Phone: 49 6421 282 5722. Fax: 49 6421 282 2191. E-mail: marahiel{at}chemie.uni-marburg.de.

Journal of Bacteriology, April 2006, p. 3130-3133, Vol. 188, No. 8
0021-9193/06/$08.00+0     doi:10.1128/JB.188.8.3130-3133.2006
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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