Fig. 2. Amino acid sequences of cMDHs from Mytilus trossulus (M. t.), M. galloprovincialis (M. g.) and M. californianus (M. c.), deduced from the nucleotide sequences given in Fig. 1. Dashes represent identity with the M. trossulus sequence. The single non-conservative substitution at position 114 between M. trossulus and the other two congeners is indicated by the arrows. The catalytic loop region of cMDH (see Discussion) is highlighted in black.