Figure 8. Competition co-cultures with CdiA^EC93 truncation and deletion variants.

Stain CH9591 (bamA^ECL) cells that express the indicated CdiA^EC93 variants were used as inhibitor cells in competition co-cultures with E. coli X90 target cells. Inhibitors were mixed at a 10:1 ratio with targets and incubated with shaking at 37 °C for four h. Viable target bacteria were enumerated as colony forming units per mL and counts are presented as the average ± SEM for two independent experiments.