Glucan 1,6-α-isomaltosidase explained

Glucan 1,6-α-isomaltosidase
Ec Number:3.2.1.94
Cas Number:56467-68-6

Glucan 1,6-α-isomaltosidase (exo-isomaltohydrolase, isomalto-dextranase, isomaltodextranase, G2-dextranase, 1,6-α-D-glucan isomaltohydrolase) is an enzyme with systematic name 6-α-D-glucan isomaltohydrolase.[1] [2] It catalyses hydrolysis of (1→6)-β-D-glucosidic linkages in polysaccharides, to remove successive isomaltose units from the non-reducing ends of the chains

Optimum activity is on those 1,6-α-D-glucans containing 6, 7 and 8 glucose units.

Notes and References

  1. Sawai T, Toriyama K, Yano K . A bacterial dextranase releasing only isomaltose from dextrans . Journal of Biochemistry . 75 . 1 . 105–12 . January 1974 . 4826536 .
  2. Transisomaltosylation activity of a bacterial isomaltodextranase . Sawai T, Niwa Y . Agric. Biol. Chem. . 1975 . 39 . 1077–1083 . 10.1271/bbb1961.39.1077. free .