FIG. 2.

Induction of ResDE-dependent genes by SNP. Wild-type (A) and hmp mutant (B) strains carrying the various transcriptional lacZ fusions were grown aerobically in 2× yeast extract-tryptone medium. When cells reached early or mid-exponential growth (optical density at 600 nm of around 0.2), cells were treated with SNP at 100 or 500 μM. For a control, no SNP was added. The incubation was continued with shaking for 1 h before harvesting for measurement of β-galactosidase activity (β-gal. act.). The activities are averages from more than three experiments with standard errors.