PmrA has been shown to bind the promoters of other PmrA-regulated loci , including pmrCAB , pmrHFIJKLM , and pmrE ( ugd ) ( 1 , 56 ) .
PmrA has been shown to bind pmrCAB .
In addition , PmrA can autoregulate the pmrCAB operon to increase expression of th regulatory system in response to induction signals .