FIG. 2.

Core promoter region of the fimA gene. (A) Schematic map of the fimA promoter region fused with the lacZ reporter gene. (B) Sequences of the core promoter region of fimA with and without mutations. UPF represents wild-type promoter sequence; the sequences subsequently mutated are underlined and in boldface. The sequences of eight mutated promoters are also shown. Base substitutions are represented by underlined and bolded letters and deletion mutations are shown by the symbol ▵, with the number representing deleted base pairs.