FIG. 4.

Primary amino acid sequence alignments of translated B. pertussis DNA alcR sequences with selected high-scoring AraC family members identified in BLAST database searches. The partial sequences shown represent the highest-scoring carboxy-terminal segments of similarity. The helix-turn-helix DNA binding and AraC signature motifs (lines), amino acid positions in the protein sequences as reported in GenBank (numbers), and residues which match the consensus (boxes) are indicated. The GenBank accession numbers are as follows: B. pertussis AlcR, AF018255; P. aeruginosa PchR, L11657; Y. pestis YbtA, U50452; P. putida XylS, M10143, M15819, and M20635; Y. pestis LcrF, M86690; and E. coli K-12 AraC, V00259.