Figure 1.
Overall structure of BmSUH. A, ribbon model of the BmSUH monomer. The catalytic (β/α)8 barrel A-domain is shown in red, domain B is green, domain B′ is cyan, and domain C is yellow. Calcium and magnesium ions are indicated as slate blue and light green spheres, respectively, and glucose at subsite −1 is shown as a black stick model. The N and C termini are indicated as Nt and Ct, respectively. B, molecular surface and ribbon models of BmSUH dimer. One protomer is shown in the same colors in A, and the other is shown in gray.