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. 2010 May 7;192(14):3565–3573. doi: 10.1128/JB.00290-10

FIG. 1.

FIG. 1.

Schematic representation of the mutually exclusive secondary structures formed by the 157-nucleotide leader of the trpRS1 transcript. The start codon (GUG), tryptophan codon (UGG), and stop codon (UGA) of the trpRS1 leader peptide ORF are in boldface. (A) The proposed terminator structure of the wild-type trpRS1 leader peptide attenuator. An S. coelicolor strain harboring the reporter construct with the wild-type promoter/leader fails to grow on medium containing only kanamycin (growth is indolmycin dependent). (B) The proposed antiterminator structure of the trpRS1 leader peptide attenuator. An S. coelicolor strain harboring the wild-type reporter construct grows on medium containing kanamycin and indolmycin.