regulator of diverse genes. Using a combination of genetics and biochemistry we show that
CsrA binds directly to the 5′ end of the transcript encoding AcrAB. Deletion of csrA or
mutagenesis of the CsrA binding sites reduced production of both AcrA and AcrB.
Nucleotide substitutions at the 5′ UTR of acrA mRNA that could potentially weaken the
inhibitory RNA secondary structure, allow for more efficient translation of the AcrAB proteins …