1887

Abstract

The genome of contains genes coding for the sigma factors RpoD, RpoN, RpoH1, RpoH2, RpoE1 and RpoE2. Previously published data show that is flagellated and that an mutant overexpresses the flagellar protein FlgE. In this study, we demonstrate that mutation of causes an overexpression of the flagellar genes , , , and , correlating with the production of a longer filament and thereby demonstrating that RpoE1 acts as a flagellar repressor. Moreover, mutation of increases the promoter activity of the flagellar master regulator , suggesting that RpoE1 acts upstream of Together, these data show that RpoE1 represses the flagellar synthesis and filament length in .

Funding
This study was supported by the:
  • , Fonds Adrien Bauchau
  • , Fonds National de la Recherche Scientifique
  • , Fonds pour la Formation à la Recherche dans l’Industrie et dans lAgriculture
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2011-05-01
2021-02-26
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