FIG 1.
(A) Map of the genetic elements of the chiB upstream region (altered according to Fig. 4 in reference 21). The transcription start site (TSS) is indicated as +1. The locations of the dre site and cre site are labeled. Gray regions in the minimal promoter represent the −10 box and the −35 box. SD, Shine-Dalgarno sequence. (B) Synteny of the yvoABt locus in Bacillus thuringiensis HD-789. Gene organization was deduced from the complete genome sequences retrieved from the NCBI database. Black rectangles upstream of the nagA ortholog represent identified dre-like sequences.