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. 2012 Mar 14;7(3):e32977. doi: 10.1371/journal.pone.0032977

Figure 1. A) Schematic representation of the S. lividans Antitoxin-Toxin bicistronic operon.

Figure 1

The overlap between the two genes is shown. The stop codon of the antitoxin and the start codon of the toxin are shown in bold. B) Clustal alignment of the predicted amino acid sequence of the putative S. lividans antitoxin (YefMsl) with E. coli YefM (YefMec) and the putative S. lividans toxin (YoeBsl) with E. coli YoeB (YoeBec). Identical amino acids are boxed in black and conservative amino acid substitutions are boxed in grey. Semi-conservative substitutions are shown with one dot. C) DNA sequence of the putative promoter of the S. lividans TA system. The putative -35 and -10 regions as well as the ribosome-binding site (SD) are underlined.