FIG 4.

Expression of PafR in UPEC affects biofilm formation and motility. (A) An array of biofilm-related genes is upregulated in PafR-expressing CFT073 cells compared to results for ΔpafRP cells, as indicated by oligonucleotide-based microarray analysis. (B) Biofilm formation by wild-type CFT073 and PafR-expressing cells, assessed by the crystal violet coloration assay. (C) Average diameters of CFT073 and PafR-expressing colonies on soft agar plates. (D) Colonies of CFT073 and PafR-expressing cells grown for 12 h on soft agar plates.