(A) Comparison of luciferase activity of pYC082 (solid bars) and pYC077 (open bars) in K. pneumoniae CG43S3 (wild type) and R2035 (ΔrmpA2). (B) Luciferase activity of pYC082 in strains CG43S3, R2035, B2202 (ΔrcsB), L2117 (Δlon), RB01 (ΔrmpA2 ΔrcsB), and RL01 (ΔrmpA2 Δlon) was measured in the presence (striped bars) or absence (solid bars) of pYC084. Error bars, standard deviations; RLU, relative light units.