of the RcsC/YojN/RcsB regulatory system due to the rcsC11 allele in the sensor RcsC renders Salmonella that inactivation of the response regulator gene rcsB restores full virulence to the rcsC11 mutant , indicative that its attenuated phenotype results from aberrant expression of RcsB-regulated genes .
rcsB overexpression represses PrcsDB activity RESULTS RcsB overproduction represses rcsD transcription We have previously demonstrated that rcsB overexpression from plasmid prcsB results in strong repression of rcsD gene expression , while its own expression is not affected .