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Bacterial cellular protein S-nitrosylation profiles of wild-type and mutant strains of M. catarrhalis O35E. (A) Cell suspensions of the wild-type strain, the norB mutant, the aniA norB mutant, and the nsrR mutant were incubated with SNOB reagent in medium with (+) or without (−) added nitrite. S-nitrosylated proteins were visualized using streptavidin-HRP. (B) M. catarrhalis CopB was detected as a loading control.
