The Enzyme Database

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Accepted name: glucan 1,6-α-isomaltosidase
Reaction: Hydrolysis of (1→6)-α-D-glucosidic linkages in polysaccharides, to remove successive isomaltose units from the non-reducing ends of the chains
Other name(s): exo-isomaltohydrolase; isomalto-dextranase; isomaltodextranase; G2-dextranase; 1,6-α-D-glucan isomaltohydrolase
Systematic name: 6-α-D-glucan isomaltohydrolase
Comments: Optimum activity is on those 1,6-α-D-glucans containing 6, 7 and 8 glucose units; those containing 3, 4 and 5 glucose units are hydrolysed at slower rates.
Links to other databases: BRENDA, EXPASY, Gene, KEGG, MetaCyc, CAS registry number: 56467-68-6
1.  Sawai, T., Toriyama, K. and Yano, K. A bacterial dextranase releasing only isomaltose from dextrans. J. Biochem. (Tokyo) 75 (1974) 105–112. [PMID: 4826536]
2.  Sawai, T. and Niwa, Y. Transisomaltosylation activity of a bacterial isomaltodextranase. Agric. Biol. Chem. 39 (1975) 1077–1083.
[EC created 1976]

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