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Journal of Bacteriology
Year: 2008  |  Volume: 190  |  Issue: 2  |  Page No.: 769 - 771

LuxS Affects Flagellar Phase Variation Independently of Quorum Sensing in Salmonella enterica Serovar Typhimurium

M. H. Karavolos, D. M. Bulmer, K. Winzer, M. Wilson, P. Mastroeni, P. Williams and C. M. A. Khan    

Abstract: LuxS catalyzes the synthesis of the quorum-sensing signaling molecule autoinducer 2. We show that in Salmonella enterica serovar Typhimurium, deletion of the luxS gene polarizes flagellar phase variation toward the more immunogenic phase 1 flagellin. This phenotype is complementable by luxS in trans but is independent of quorum-sensing signals.

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