Fig 1.

Disk diffusion susceptibility testing of the rocG mutant with several antibiotics affecting cell wall biosynthesis. (A) The rocG mutant is sensitive to fosfomycin and slightly sensitive to penicillin G and ampicillin. (B) Disruption of rocG markedly increases sensitivity to CEF (1 μg). Each bar represents the average zone of inhibition, expressed as total diameter minus diameter of the filter paper disk (6.5 mm). At least three assays were performed with three independent clones of each strain. Error bars indicate the standard deviations.