Regulation of Expression of Oxacillin-Inducible Methionine Sulfoxide Reductases in Staphylococcus aureus

Figure 1

Regulation of msrA1/msrB locus in a methicillin-sensitive S. aureus strain SH1000. The msrA1/msrB promoter-lacZ reporter strains were cultured in TSB and growth was measured as OD₆₀₀ (a). β-galactosidase activity levels were measured in wild-type S. aureus strain SH1000 (open triangles) and its derivatives msrA1 (open circles), msrB (closed triangles), and msrA1-msrB (open square) mutants during different stages of growth (b). Values indicate averages of data from at least three independent experiments ± standard error (SE) ( significant at ).

(a)

(b)