... picture of GH-57. In our alignment, in certain cases the extra N - and C-terminal ends were omitted. In the case of Q9Y8I8_THEHY, the excised sequence corresponds to three regionsthat were originally ... domain(SLD2), a threonine-rich region and a putative transmem-brane domain [22]. Interestingly, the 3D structure of aprotein domain, which is clearly homologous to SLD1 and -2 of Q9Y8I8_THEHY, ... (W120, W221 and W357, highlighted), as well as the residues in the corresponding positions in other GH-57 members, could be of interest. The glucose molecule (in the middle) is also shown. The PDB...