Transcriptomic analysis reveals the gene expression profiles and cellular functions regulated by the RcsB in Yersinia enterocolitica

A total of 132 differentially expressed genes (DEGs) regulated by the RcsB have been identified, of which 114 were up-regulated and 18 were down-regulated. Analyses of the GO annotation and KEGG enrichment led us to focus on the role of RcsB in the inhibition of chemotactic behavior, flagella biosynthesis and bacterial infection in Y. enterocolitica. Overall, the information provided in this study complements our understanding of Rcs phosphorelay in the regulation of Y. enterocolitica pathogenicity, and, simultaneously, provides clues to additional roles of the Rcs system in other members of family Enterobacteriaceae. Gene expression profiles of wild-type and ΔrcsB mutants were compared by RNA-Seq.