FIG. 1.

Promoter structure of the FZB45 phyC gene. (A) Architecture of the phyC promoter of FZB45. Gray shading identifies the putative PhoP binding boxes. Transcriptional start site is indicated by a bent arrow. Consensus sequences (−35 and −10) are underlined. (B) Mapping of the 5′ end of the phyC transcript by primer extension. The CAGT sequence ladder corresponding to the nucleotide sequence of the noncoding strand is indicated at the right. The initiation of transcription (G) is marked by a bent arrow.