Fig 6.

Nucleotide sequence of elrA promoter region. Lowercase letters indicate elrR and elrA coding sequences; the stop and start codons are in bold. The 50-bp inverted repeat is indicated by convergent arrows. Numbering refers to the translation start site of elrA (+1). The two transcriptional start sites t1 and t2 of elrA previously mapped are shown (6); t2 was not found under the conditions used in this work. The putative −35 and −10 boxes are underlined. The ribosome binding site for elrA is shown by italics. Shaded letters correspond to extremities of DNA probes used for EMSA (Fig. 4).