Entry |
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Name |
dioscin glycosidase (diosgenin-forming);
dioscin glycosidase (aglycone-forming)
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Class |
Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
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Sysname |
3-O-[alpha-L-Rha-(1->4)-[alpha-L-Rha-(1->2)]-beta-D-Glc]diosgenin hydrolase (diosgenin-forming)
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Reaction(IUBMB) |
3-O-[alpha-L-Rha-(1->4)-[alpha-L-Rha-(1->2)]-beta-D-Glc]diosgenin + 3 H2O = D-glucose + 2 L-rhamnose + diosgenin [RN: R10581]
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Reaction(KEGG) |
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Substrate |
3-O-[alpha-L-Rha-(1->4)-[alpha-L-Rha-(1->2)]-beta-D-Glc]diosgenin [CPD: C08897];
H2O [CPD: C00001]
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Product |
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Comment |
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-[alpha-L-Ara-(1->4)-[alpha-L-Rha-(1->2)]-beta-D-Glc]diosgenin into diosgenin and free sugars as the final products. cf. EC 3.2.1.190, dioscin glycosidase (3-O-beta-D-Glc-diosgenin-forming).
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History |
EC 3.2.1.189 created 2013
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Reference |
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Authors |
Fu Y, Yu H, Tang SH, Hu X, Wang Y, Liu B, Yu C, Jin F |
Title |
New dioscin-glycosidase hydrolyzing multi-glycosides of dioscin from Absidia strain. |
Journal |
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Other DBs |
ExPASy - ENZYME nomenclature database: | 3.2.1.189 |
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