Effects of (a) n- octane and (b) 1-octanol on the growth rates of JA300A/pMW119 (∆) and JA300A/pAcrB (○). In (a), cell growth in the absence of n- octane are represented by dotted lines. Dashed lines depict cell growth in the presence of n- octane without IPTG induction. Solid lines illustrate the growth of IPTG-induced cells in the presence of n- octane. In (b), all cells were induced with IPTG. Cell growth in the presence of 0, 0.025 and 0.050% 1-octanol are shown in solid, dotted and dashed lines, respectively. Growth of mutants 1G1 (□) and 1G2 (◊) in 0.050% 1-octanol are overlaid.