<p>This domain is found at the N terminus of a subset of sigma54-dependent transcriptional activators that are involved in regulation of flagellar motility e.g. FleQ in <taxon tax_id="287">Pseudomonas aeruginosa</taxon>. It is clearly related to <db_xref db="INTERPRO" dbkey="IPR001789"/>, but lacks the conserved aspartate residue that undergoes phosphorylation in the classic two-component system response regulator (<db_xref db="INTERPRO" dbkey="IPR001789"/>).</p> Flagellar regulatory FleQ