FIG 2 .

Inactivation of cydB and qoxB reduces the growth of S. aureus. (A) Wild-type (WT) and respective mutant strains of S. aureus were grown overnight, subcultured into fresh medium, and incubated at 37°C. The growth of the strains was monitored over time by measuring optical density at 600 nm. The average from three independent experiments is shown. Error bars represent one standard deviation from the mean. (B) Wild-type (WT) S. aureus and the qoxB cydB mutant harboring a plasmid control (pOS) or a plasmid containing the cydAB operon (pcydAB) were grown overnight, subcultured into fresh medium, and incubated at 37°C. The growth of the strains was monitored over time by measuring optical density at 600 nm. The average from three independent experiments is shown. Error bars represent one standard deviation from the mean.