FIG 3.

CsgD and CpxR as intermediate repressors of bacterial motility. (A and B) Motility (B) and Congo red (B) phenotypes of the wild-type E. coli BW25113 strain and rpoS, csgD, and cpxR mutant strains derived from the WT strain. Stationary-phase cultures were inoculated on the top of the LB soft-agar (0.35%) plates for motility tests and onto LB agar (1.2%) plus Congo red (0.004%) for curli fimbria staining and incubated overnight or 2 days, respectively, at 30°C. (C) Known functions and interactions between RpoS, CsgD, and CpxR.