Fig. 1

Toxicity of TtgABC expression. The pBbB8k-TtgABC plasmid was introduced into P. putida DOT-T1E and E. coli DP10, and efflux pump expression was induced using different concentrations of l-arabinose. Growth curves indicate a prolonged lag-phase when inducing expression with 100 mM l-arabinose in P. putida (a), while growth of E. coli is strongly affected starting from inducer concentrations of 1 µM (b)