Fig. 6.

exoR expression in different genetic backgrounds with or without the wild-type ExoR and mutated ExoR without its native signal peptide (ΔSP). The exoR promoter–gfp fusion, P_exoRgfp, was expressed from plasmid pP_exoRgfp (pHC514) to monitor levels of exoR expression. The wild-type ExoR protein was expressed from the lac promoter on plasmid pP_lacexoR (pHC530) and the mutated ExoRΔSP was expressed from the lac promoter on plasmid pP_lacexoRΔsp (pHC556). Data represent means±ranges from two independent experiments.