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Alignment between the overlapping ends of genes ECs4695 and ECs4696 in Escherichia coli O157:H7 (top strand) and genes rbsR (SDY_3994) and yieO (SDY_3993) in Shigella dysenteriæ. Shading indicates coding regions, arrows indicate direction of gene transcription, and stop codons are underlined. The single-base mutation between the 2 organisms that is the site of a potential overlap-repair event is boxed.
