Figure 5From: Investigating the genetic regulation of the ECF sigma factor σS in Staphylococcus aureus LacR does not directly regulate sigS expression. Electrophoretic mobility shift mobility assays were performed using purified LacR, the lac promoter region (positive control), and the promoter region of sigS (test). LacR was added at increasing concentrations of 0.01, 0.1 and 1 μM in all panels.Back to article page