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Accepted name: limit dextrinase
Reaction: Hydrolysis of (1→6)-α-
D-glucosidic linkages in α- and β-limit dextrins of amylopectin and glycogen, and in amylopectin and pullulan
Glossary: pullulan = a linear polymer of (1→6)-linked maltotriose units
R-enzyme; amylopectin-1,6-glucosidase; dextrin α-1,6-glucanohydrolase
Systematic name: dextrin 6-α-glucanohydrolase
Comments: Plant enzymes with little or no action on glycogen. Action on amylopectin is incomplete, but action on α-limit dextrins is complete. Maltose is the smallest sugar it can release from an α-(1→6)-linkage.
Links to other databases:
BRENDA, EXPASY, KEGG, MetaCyc
Gordon, R.W., Manners, D.J. and Stark, J.R. The limit dextrinase of the broad bean (
Vicia faba). Carbohydr. Res. 42 (1975) 125–134.
Manners, D.J. Observations on the specificity and nomenclature of starch debranching enzymes.
J. Appl. Glycosci. 44 (1997) 83–85.
[EC 220.127.116.11 created 2000]
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