FIG. 7.

Analysis of the cobinding of KdgR and PecS on the E. chrysanthemi 3937 pelD promoter-operator region by DNase I footprinting. Lanes 1 and 9, control digestions; lanes 2 and 3, reaction in the presence of 50 and 200 nM purified PecS, respectively; lane 4, digestion in the presence of 25 nM PecS and 20 nM KdgR; lane 5, reaction in the presence of 50 nM PecS and 20 nM KdgR; lanes 6 and 7, digestion in the presence of 20 and 200 nM KdgR, respectively; lane 8, reaction in the presence of PecS 200 nM and 100 nM KdgR.