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Your query returned 1 entry. Printable version
EC | 3.2.1.189 | ||
Accepted name: | dioscin glycosidase (diosgenin-forming) | ||
Reaction: | 3-O-[α-L-Rha-(1→4)-[α-L-Rha-(1→2)]-β-D-Glc]diosgenin + 3 H2O = D-glucose + 2 L-rhamnose + diosgenin | ||
For diagram of diosgenin catabolism, click here | |||
Glossary: | 3-O-[α-L-Rha-(1→4)-[α-L-Rha-(1→2)]-β-D-Glc]diosgenin = (3β,25R)-spirost-5-en-3-yl 6-deoxy-α-L-mannopyranosyl-(1→2)-[6-deoxy-α-L-mannopyranosyl-(1→4)]-β-D-glucopyranoside = dioscin diosgenin = (3β,25R)-spirost-5-en-3-ol |
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Other name(s): | dioscin glycosidase (aglycone-forming) | ||
Systematic name: | 3-O-[α-L-Rha-(1→4)-[α-L-Rha-(1→2)]-β-D-Glc]diosgenin hydrolase (diosgenin-forming) | ||
Comments: | The enzyme is involved in degradation of the steroid saponin dioscin by some fungi of the Absidia genus. The enzyme can also hydrolyse 3-O-[α-L-Ara-(1→4)-[α-L-Rha-(1→2)]-β-D-Glc]diosgenin into diosgenin and free sugars as the final products. cf. EC 3.2.1.190, dioscin glycosidase (3-O-β-D-Glc-diosgenin-forming). | ||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||
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