KEGG   ENZYME: 3.2.1.94Help
Entry
EC 3.2.1.94                 Enzyme                                 

Name
glucan 1,6-alpha-isomaltosidase;
exo-isomaltohydrolase;
isomalto-dextranase;
isomaltodextranase;
G2-dextranase;
1,6-alpha-D-glucan isomaltohydrolase
Class
Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
BRITE hierarchy
Sysname
6-alpha-D-glucan isomaltohydrolase
Reaction(IUBMB)
Hydrolysis of (1->6)-alpha-D-glucosidic linkages in polysaccharides, to remove successive isomaltose units from the non-reducing ends of the chains
Comment
Optimum activity is on those 1,6-alpha-D-glucans containing 6, 7 and 8 glucose units; those containing 3, 4 and 5 glucose units are hydrolysed at slower rates.
History
EC 3.2.1.94 created 1976
Reference
1  [PMID:4826536]
  Authors
Sawai T, Toriyama K, Yano K.
  Title
A bacterial dextranase releasing only isomaltose from dextrans.
  Journal
J. Biochem. (Tokyo). 75 (1974) 105-12.
  Sequence
Reference
2
  Authors
Sawai, T. and Niwa, Y.
  Title
Transisomaltosylation activity of a bacterial isomaltodextranase.
  Journal
Agric. Biol. Chem. 39 (1975) 1077-1083.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
56467-68-6

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