Diagram of the licT gene structure. The locations of the conserved co-antiterminator (CAT) domain and PTS regulatory domains (PRDs) are indicated by the boxed regions below the licT coding sequence. The asterisks indicate the positions of conserved histidine residues that are potentially phosphorylated to regulate the activity of the LicT protein. The start site of the bglP transcript is shown by the arrow. The RAT site is located between the start site of transcription and the coding region of the bglP gene.