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(A) Nucleotide sequences of promoter and translation initiation regions in the cir gene cluster. Putative −35, −10, and ribosome-binding site (RBS) sequences are underlined. Deduced amino acid sequences are indicated below the nucleotide sequences, and gene names are given below the amino acid sequences. Putative start codons are indicated in boldface and are numbered when more than one possibility exists. Termination codons are underlined and in italic.
