Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
The marRAB operon. The MarR dimer binds marO at two different sites, site 1 and site 2, while MarA activates marRAB transcription by interacting with the marbox. MarA also activates the transcription of micF, acrAB, and tolC, leading to multiple-antibiotic resistance. The role of MarB is unknown.
