σA-dependence of the esxA promoter. Luciferase activities of plasmids pesxAp-luc+ (wt), pesxApΔσA-luc+ (ΔσA) and pesxApΔσB-luc+ (ΔσB) in S. aureus Newman. The strains were grown in LB broth at 37°C and 180 rpm for 3 h. Data shown are the means ± SD of four independent experiments. Statistical significances between the different strains were assessed with a paired, two-tailed Student's t-test (* p < 0.01).
Schulthess et al. BMC Microbiology 2012 12:17 doi:10.1186/1471-2180-12-17