isomaltase
Sign in to saveIsomaltase () is an enzyme that breaks the bonds linking saccharides, which cannot be broken by amylase or maltase. It digests polysaccharides at the alpha 1-6 linkages. Its substrate, alpha-limit dextrin, is a product of amylopectin digestion that retains its 1-6 linkage (its alpha 1-4 linkages having already been broken down by amylase). The product of the enzymatic digestion of alpha-limit dextrin by isomaltase is maltose.
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Within Vinony's link graph, isomaltase is referenced by 7 other articles, and connects out to PubMed, PubMed Central and enzyme.
It is catalogued under the topic Hydrolases.
Its subject is documented across 6 Wikipedia language editions.
Wikidata facts
- Subclass of
- alpha-glucosidase
Show 1 more fact
- EC enzyme number
- 3.2.1.10
Sources (1)
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Encyclopedic overview
4 sectionsContents
- Nomenclature
- Mechanism
- External links
- References
Isomaltase () is an enzyme that breaks the bonds linking saccharides, which cannot be broken by amylase or maltase. It digests polysaccharides at the alpha 1-6 linkages. Its substrate, alpha-limit dextrin, is a product of amylopectin digestion that retains its 1-6 linkage (its alpha 1-4 linkages having already been broken down by amylase). The product of the enzymatic digestion of alpha-limit dextrin by isomaltase is maltose.
Isomaltase helps amylase to digest alpha-limit dextrin to produce maltose. The human sucrase-isomaltase is a dual-function enzyme with two GH31 domains, one serving as the isomaltase, the other as a sucrose alpha-glucosidase.
Excerpted from Wikipedia’s “isomaltase” article, available under the CC BY-SA 4.0 licence.