Files in this Data Supplement:

• Supplemental file 1 - Figure S1. Schematic illustration of the procedure for construction of the Pspac-regulated yhcS mutant SASJ104 and Southern blot analysis of the mutant. Figure S2. Schematic illustration of the procedure for construction of the Pspac-regulated yhcR mutant SASJ204 and Southern blot analysis of the mutant.
  PowerPoint presentation, 300K.
• Supplemental file 2 - Table S1. Primers used in this study. Figure S1 and S2 legends.
  MS Word document, 36K.