FIG. 3.

Relevant features of the B. abortus dhbCEBA promoter region. Transcript start sites are marked by +1, and the corresponding −35 and −10 regions are underlined. Putative Shine-Dalgarno (S.D.) sequences are also indicated. Oligonucleotides CStrt1 (P1) and CStrt2 (P2) used for primer extension analysis are indicated by arrows. Shaded boxes highlight predicted start codons, and large arrows indicate translated regions with amino acid sequence. Predicted Fur binding sites (15) are designated by boxed areas.