The main regulator of HilD , thereby activates flhDC transcription .
The main regulator of HilD , binds upstream of the flhDC P5 transcriptional start site .
Posttranscriptional activation of flhDC occurs at the level of the flagellar regulator FliZ via regulation of HilD activity and repression of the antiFlhD4C2 factor YdiV .
Furthermore , HilD directly controls the expression of the flhDC operon encoding FlhDC .
Likewise , HilD binds the flhDC promoter to activate the flagellar regulon .