M. BsaHI Sequence Alignment. MUSCLE sequence alignment of M. BsaHI and its homologues and M. HaeIII. Residues are coloured where the aligned sequences are completely conserved. Highly conserved motifs are labelled and the highly variable 'target recognition domain' is shaded in light blue. Dark blue shading indicates the proposed N-TL, TL and C-TL motifs.