Fig. 6.

Colonization level of bacteroidetocin B-producing and bacteroidetocin B mutant strain (BtCL15Δ1844) in the gnotobiotic mouse gut. a Colonization levels of gnotobiotic mice monoassociated with BtCL15 or BtCL15Δ1844. Fecal samples were collected after 6 days. The mean cfu/ml recovered from groups of three mice of each sex is plotted with the SEM as error bars; P value > 0.9999 for both groups of mice. The statistical analysis was performed using a two-tailed Mann–Whitney test as calculated by Prism version 8.0.1 for 64-bit Windows (GraphPad Software, San Diego, CA). b Western immunoblots of feces of mice monoassociated with BtCL15 or BtCL15Δ1844 for 6 days using 1844 (bacteroidetocin B) antiserum. M1–M3 and M7–M9 were monoassociated with wild-type BtCL15 and M4–M6 were monoassociated with BtCL15Δ1844. Source data are provided as a Source Data File