FIG. 1.
Nucleotide sequence of hemZ and deduced protein sequence. The putative translational start and stop codon of hemZ and the stop codon of the upstream-located yhaX are shown in boldface. The stem-loop structures upstream of hemZ and at its 3′ end are indicated by arrowheads above the sequence. The potential hemZ promoter is shown in boldface, and the −35 and −10 regions of the potential ςA promoter are indicated above the sequence. The mapped transcriptional start point (S) and the G residue at position 657, that is absent in the published genome sequence are underlined and in boldface. The hemZ region replaced by a cat cassette in various mutants is underlined.