while transcription of acrAB is activated by bile , this activation is independent of marRAB , as well as Rob , RpoS or PhoP -- PhoQ
Bile-mediated activation of the mar operon occurs independently of Rob Rob , a known activator of marRAB in E. coli , was examined for its role in bile activation of the mar operon in S. typhimurium .
Rob activate marRAB transcription .