Fig. 1.

Nucleotide sequence of the pcnB promoter region. The previously reported (or proposed) transcription start sites from particular promoters (pS1, p1, pB and p2) are marked, with first transcribed nucleotides indicated by large bold letters and arrows showing the direction of transcription, and −35 and −10 boxes are shown in frames. The Shine–Dalgarno (S.D.) sequences are underlined, and translation initiation codons (ATT and ATG, called +1(a) and +1(b), respectively) are indicated by bold letters