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Alignment of the amino acid sequences for the RelA-like element from M. avium subsp. paratuberculosis (M. ptb) and RelA from M. tuberculosis (M. tb) (relA gene accession no. Rv2583c, TubercuList Web Server, http://genolist.pasteur.fr/TubercuList/). Symbols: bar, identical; colon, highly related; period, more distantly related; no symbol, unrelated.
