FIG. 1.
fla/che promoter region. The intergenic region between codY and flgB has been defined as the fla/che promoter region. Two promoter elements were found to function in vivo: a ςA-dependent promoter (fla/che PA, present study) and PD-3, a previously identified ςD-dependent promoter (11). The −10 and −35 sequences for both of these promoters are underlined, and the +1 transcription initiation sites appear in boldface type. The 29 bp that were deleted in the fla/che PAΔ strain and replaced with the EcoRI restriction site (GAATTC) are indicated by asterisks.