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. 2004 Feb;186(4):938–948. doi: 10.1128/JB.186.4.938-948.2004

FIG. 7.

FIG. 7.

Alignment of ECF σ factor-dependent promoter regions. The promoters of known ECF σ factor-dependent genes are aligned. The transcriptional start site of each gene is underlined. The −10 and −35 promoter elements are indicated by underlined lowercase letters. (A) Genes (GenBank accession numbers): bhuR, B. pertussis heme receptor (AY032627); fecA, E. coli ferric citrate receptor (S79758); dagAP2, Streptomyces coelicolor agarase promoter 2 (X05811); rpoHP3, E. coli heat shock σ factor promoter 3 (AF127104); algD, P. aeruginosa alginate (M28683); pvdF, P. aeruginosa pyoverdin biosynthesis (U07359); carQ, Myxococcus xanthus transcriptional regulator (X71062). (B) Alignment of B. pertussis bhuR and P. putida pupB pseudobactin receptor gene (X73598) promoter regions. Putative −10 and −35 elements are indicated by underlined lowercase letters. The start codons and the B. pertussis +1 position are underlined.