FIG 6.
(A) XylR binds the ParaC/ParaB promoter in a xylose-dependent manner, as determined in an electrophoretic mobility shift assay. The PxylA promoter was included as a positive control, and the PflgB promoter was included as a negative control. (B) Nucleotide sequence of the ParaC/ParaB promoter region. The −10/−35 regions of ParaC and ParaB promoters are shown with straight and wavy underlines, respectively. The AraC binding sites are shown in boldface. These annotations were taken from RegulonDB (28). The putative XylR binding sites, as determined through sequence analysis, are boxed.