Figure 4.
Steady-State Expression of AcrA and Mutants
Western blotting analysis with anti-AcrA antibodies of total cell protein (1 μg per lane) separated on an SDS-polyacrylamide (12%) gel. AcrA was expressed along with AcrB under control of the native acrAB promoter from various derivatives of pAHisB plasmid in E. coli AG100AX (ΔacrAB::kan ΔacrEF::spe). Steady-state expression of intact AcrA(1-397) (WT), AcrA L287M/L288M, AcrA F223M/L224M, AcrA F223M/L224M/L287M/L288M, and AcrA(1-312) is shown.