Sequence alignment of M.SsuMA, M.DpnII, and M.LlaA (A); M.SsuMB, M.DpnA, and M.LlaB (B); and R.SsuRA, R.DpnII, R.SsuRB, and R.LlaC (LlaDCHI) (C). Black background, amino acids identical among all the sequences aligned; dashes, gaps in the aligned sequences. DDBJ/EMBL/GenBank accession numbers of the sequences are given in Table 3.