Fig. 1From: A trehalase from Zunongwangia sp.: characterization and improving catalytic efficiency by directed evolutionAmino acid sequence alignment of TreZ with other characterized trehalases. TreZ, TreZ investigated in this study; Tre37, trehalase from E.coli (EDU65093); SfTre1, trehalase from Spodoptera frugiperda (ABE27189). The two red rectangular boxes Signature 1 and Signature 2 represent two highly conserved sequence segments which belonging to GH37 family. Asterisks indicate the catalytic sites of Asp306 and Glu494 Back to article page