Autogenous regulation of the Bacillus subtilis glnRA operon

Purified Bacillus subtilis GlnR was shown to bind with high affinity to a specific region that overlaps with the glnRA promoter site. The GlnR binding site includes four copies of a repeated sequence that may be the recognition site for the protein. GlnR inhibited transcription from the glnRA promoter in vitro.