Fig. 4

Maximum butanol tolerance evaluation of E. coli harboring SecB and SecB_T10A. a Specific growth rate (μ). b Tolerance to butanol (T). Black bar: E. coli JM109/pQE80L; red bar: E. coli JM109/pQE80L–secB; green bar : E. coli JM109/pQE80L–secB_T10A. All experiments were carried out in triplicate