Fig. 3.

Sensitivity of the E. coli sbmA mutant and S. meliloti ΔbacA mutant to BCR peptides. After a treatment with 3 μM BCRs for 3 h, the colony-forming units of each strain were estimated relative to the BSA control. The dataset shown is representative of three independent experiments. (A) E. coli BW25113 (wild type) and JW0368 (sbmA mutant). (B) S. meliloti 1021 and ΔbacA mutant. Each value is the mean±SE of three independent experiments. Asterisks indicate a significant difference between the wild type and mutant (P<0.01, the Student’s t-test).