FIG. 1.

Amino acid sequences for the SarA family of proteins. (A) Comparison of SarT with SarA, SarR (32), and SarS (13, 42). Con, consensus (shaded with black or gray). SarS, a 250-residue protein, has two 125-residue SarA-like modules; the C-terminal half (SarS2, 126 to 250 amino acids) shows homology with the N-terminal half (SarS1) and with other SarA homologs. (B) Promoter and termination regions of sarT. The putative −35 and −10 promoter recognition sites are underlined. The ribosomal binding site 7 bp upstream of the predicted translation start is underlined, and typical start (ATG) and termination (TAA) codons are bold. The putative terminator region consists of a T-rich region containing two potential base-paired stem-loop sequences (underlined).