FIGURE 8.

Genetic organization and expression of rpoS genes in some Gram-negative bacteria. The genetic organization of rpoS and its upstream genes (nlpD, pcm, and surE) of V. vulnificus were compared with those of E. coli (14), S. enterica serovar Typhimurium (11), and P. putida (12). The transcription start sites for each rpoS gene are designated with arrows, and the binding site locations for transcription factors are designated by vertical lines with the name of each transcription factor. In the case of E. coli and S. enterica, CRP-binding sites are putative and are thus designated with question marks.