AraC has previously been shown to repress its own transcription by binding to a region overlapping the araC promoter elements ( 32 ) .
In the absence-of-arabinose , AraC represses transcription of araC by forming a repression loop .
Unlike AraC-dependent repression of araC , repression of ydeN occurs only in the presence of arabinose .
Unlike AraC-dependent repression of araC , repression of ydeN occurs only in the presence of arabinose .