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Fig. 6 | BMC Microbiology

Fig. 6

From: Architecture of divergent flagellar promoters controlled by CtrA in Rhodobacter sphaeroides

Fig. 6

CtrA binding sites for the fliI-flgB divergent promoters from different species. Intercistronic regions between flgB and fliI of six different species of Rhodobacteraceae and one species of the Hyphomonadaceae family. These genes show a similar arrangement as that observed for flgB2 and fliI2 of R. sphaeroides. The fliI gene is represented in orange and flgB in violet. Below, the complete intercistronic region is shown and the sequences predicted as possible CtrA binding sites are indicated as follows: highlighted in yellow for the reverse strand, and underlined for the direct strand. For Hyphomonas neptunium two different sites are underlined given that the highest score (4) corresponds to a predicted site that is five nucleotides upstream the initiation codon of FlgB; the other possible site has a lower score (3.8) but from this localization it is likely that CtrA could activate the RNA polymerase

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