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Multiple-sequence alignment of amino acid sequences of Ruegeria Mobilis Marine Lactonase (RmmL) and other representative AHL lactonases (MomL, AidC, AiiA, AttM, and AiiB). Sequence alignment was performed by the MUSCLE program in the MEGA 7.0 software. RmmL harbors an N-terminal signal peptide and the predicted cleavage site was marked by arrow. RmmL shares the “HXHXDH” motif with other AHL lactonases. The conserved sites are marked by a black background.
