FIG. 1.

(A) Desulfitobacterium hafniense chlorophenol reductive dehalogenase gene cluster. (B) Alignment of three D. hafniense intergenic regions containing 14-bp inverted repeats termed “dehaloboxes” (DB1 to DB3) with the corresponding cprE-cprB intergenic region from D. dehalogenans. Positions of dehaloboxes (boldfaced), putative Pribnow boxes (underlined), and the transcription start site previously mapped in D. dehalogenans are indicated with arrows above the DNA sequence alignment. The proposed consensus sequence for dehaloboxes is given below the sequence alignment.