FIG. 1.

Schematic representation of the frz region of Escherichia coli BEN2908. The frz region of E. coli BEN2908 was sequenced on both strands (EMBL accession no. FM253092). Open reading frames labeled consecutively from 1 to 8 (open arrows), a potential Fnr/Cap binding site (open ellipse), and ribosome (open rectangles) binding sites were identified with the DNA Strider program. Putative σ⁷⁰ transcriptional promoters (bent arrows) and transcriptional terminators (Ω) were predicted with the BPROM (SoftBerry, Inc.) and the mfold (www.bioinfo.rpi.edu/∼zukerm/rna/) programs, respectively. Direct repeats (DR) were identified with the RePuter program (http://bibiserv.techfak.uni-bielefeld.de/reputer/). Genomic regions belonging to the common conserved genomic backbone of E. coli are represented in gray, using symbols similar to those described above. The selC tRNA coding region is represented by a gray triangle. Predicted functions of the proteins encoded are indicated, and the avian pathogenic E. coli genomic island 3 (AGI-3) is represented by a black bold line.