FIG 6.

BamB and BamD have redundant functions. Depletion of BamD from an arabinose-inducible P_BAD promoter in bamB null backgrounds expressing the wild-type bamA or the bamA suppressor alleles in the presence or absence of RcsF. The red line indicates growth in medium supplemented with arabinose, and the black line indicates growth in medium supplemented with fucose. bamA⁺ (A), bamA_E470K (B), bamA_A496P (C), or bamA_A499S (D) strains in the presence or absence of rcsF. Cells were inoculated into medium supplemented with arabinose (inducer) or fucose (repressor). Cultures were back-diluted at an OD₆₀₀ of ∼0.5. Depletions were performed at 37°C.