FIG. 1.
yqfS region of the B. subtilis chromosome and DNA sequences lying upstream of the yqfS ORF. (A) Genetic organization of the yqfS locus between indicated coordinates of the B. subtilis chromosome (filled box). Dashed lines above the ORFs (arrows) show the DNA fragments cloned into the indicated plasmids. Downstream of yqfU ORF a putative transcriptional terminator is shown (stem-loop structure). (B) Sequence of the intergenic region between yqfR and yqfS. The in vivo-mapped transcriptional start site of yqfS is indicated by an asterisk immediately downstream of the −10 and −35 sequences that might function as a promoter for RNA polymerase-σG. RBS (putative ribosome-binding site).