Figure 2

Induction kinetics of three CWSS promoters in response to varying concentrations of oxacillin. Luciferase activities and growth curves of strain BB255 containing: A, psas016-luc+; B, psa0908-luc+; and C, ptcaA-luc+; after addition of 0, 0.5, 1, 2 or 5-fold the MIC of oxacillin at time point zero.