TABLE 2.
Invertases and glycoside hydrolases that catalyze α1,2-glycosidic bonds with a non-reducing α-glucose
| Enzyme | EC number | Substrates | Glycosidic bonds | GH families | Structures |
|---|---|---|---|---|---|
| A/N-Inv | Sucrose | α1,2-Linkage | 100 | (α/α)6 Barrel | |
| β-Fructofuranosidase | 3.2.1.26 | Sucrose and other β-d-fructofuranosides | Terminal non-reducing β-d-fructofuranoside residues | 32, 68 | 5-Fold β-propeller |
| Sucrose α-glucosidase/sucrase | 3.2.1.48 | Terminal starch/glycogen digestion products and α1, 2-linked oligosaccharides | Linkages of α1,2 (sucrase subunit), α1,6/α1,1 (isomaltase subunit), α1,4 (both) | 13, 31 | (β/α)8 Barrel |
| Mannosyl-oligosaccharide glucosidase | 3.2.1.106 | Glc3Man9GlcNAc2 | Terminal α1,2-linkage | 63 | (α/α)6 Barrel |
| Glucosyl-galactosyl-hydroxylysine glucosidase | 3.2.1.107 | α-d-Glucosyl-1,2-β-d-galactosyl-l-hydroxylysine | α1,2-linkage | 65 | (α/α)6 Barrela |
| Branched-dextran exo-1,2-α-glucosidase | 3.2.1.115 | Branch points of dextrans and related polysaccharides | α1,2-Linkage |
a Structures of members in GH65 but not a member in EC 3.2.1.107.