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Journal of Bacteriology, June 2004, p. 4014-4018, Vol. 186, No. 12
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.12.4014-4018.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.

Cross-Regulation in Vibrio parahaemolyticus: Compensatory Activation of Polar Flagellar Genes by the Lateral Flagellar Regulator LafK

Yun-Kyeong Kim and Linda L. McCarter*

Department of Microbiology, The University of Iowa, Iowa City, Iowa 52242

Received 26 November 2003/ Accepted 17 March 2004

Gene organization and hierarchical regulation of the polar flagellar genes of Vibrio parahaemolyticus, Vibrio cholerae, and Pseudomonas aeruginosa appear highly similar, with one puzzling difference. Two {sigma}54-dependent regulators are required to direct different classes of intermediate flagellar gene expression in V. cholerae and P. aeruginosa, whereas the V. parahaemolyticus homolog of one of these regulators, FlaK, appears dispensable. Here we demonstrate that there is compensatory activation of polar flagellar genes by the lateral flagellar regulator LafK.

* Corresponding author. Mailing address: Department of Microbiology, The University of Iowa, Iowa City, IA 52242. Phone: (319) 335-9721. Fax: (319) 335-7679. E-mail: linda-mccarter{at}uiowa.edu.

Journal of Bacteriology, June 2004, p. 4014-4018, Vol. 186, No. 12
0021-9193/04/$08.00+0     DOI: 10.1128/JB.186.12.4014-4018.2004
Copyright © 2004, American Society for Microbiology. All Rights Reserved.





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