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Sequences and β-galactosidase activities of wild-type VII site-lacZ fusions and mutants eliminating ATG codons in the gene VII reading frame. The SD sequence is underlined, and ATG and mutant CTG codons are in boldface type. The gene V stop codon is shaded in the sequences of plasmids in which gene V is present. The out-of-frame GTG changed to CAG is indicated by a wavy line.
