Salmonella typhimurium flhE, a conserved flagellar regulon gene required for swarming.

ABSTRACT: The Salmonella typhimurium gene flhE is located at the end of a large flagellar locus in at least 10 peritrichously flagellated Gram-negative bacterial genera, but it shares no significant similarity with other genes. This study shows that flhE is transcribed as part of an flhBAE flagellar operon, under the control of the flagellar master regulator FlhD(2)C(2). Deletion of the chromosomal flhE gene did not affect swimming motility, but it abolished swarming motility across solid agar. Swarming was restored to the DeltaflhE mutant by the 130 aa putative envelope protein FlhE, but not by a truncated version lacking the N-terminal signal peptidase I recognition sequence. The DeltaflhE mutant was indistinguishable from the wild-type parent in number and distribution of flagella, secretion of f

SUBMITTER: Stafford GP 

PROVIDER: S-EPMC2528295 | biostudies-literature | 2007 Feb

REPOSITORIES: biostudies-literature