FIG. 1.
(A) Genetic organization of the lpf gene clusters from strains of E. coli and S. enterica serovar Typhimurium showing the approximate sizes and number of ORFs of the gene clusters and the E. coli K-12 gene adjacent to the chromosomal insertion site. (B) Analysis of the region upstream from the lpfO113 gene cluster. Putative −10 and −35 promoter sites are underlined, and a putative ribosome binding site is shaded. The amino acid translation is shown above the nucleotide sequence. A potential transcription start point is in bold type and uppercase, and the coding region of lpfA is in bold type. The promoter region was analyzed with the NNPP program for prokaryotes.