FIG. 7.

Alignment of verified and putative PhoR binding sites. Binding sites 1 and 2 were identified in this work, and binding site 3 is an artificial binding site with the currently highest affinity for PhoR∼P. It represents an 8-bp direct repeat separated by 3 bp. Sequences 4 to 15 were identified by visual inspection of the promoter regions to which PhoR binds in vitro. Positions are relative either to the transcriptional start site (TS) or, if this is not known, to the proposed translational start site (TL).