ENTRY       EC 3.2.1.68
NAME        Isoamylase
            Debranching enzyme
CLASS       Hydrolases
            Glycosidases
            Hydrolysing O-glycosyl compounds
SYSNAME     Glycogen 6-glucanohydrolase
REACTION    Hydrolysis of 1,6-alpha-D-glucosidic branch linkages in glycogen,
            amylopectin and thier beta-limit dextrins
SUBSTRATE   Glycogen
            Amylopectin
            beta-Limit dextrin
            H2O
PRODUCT     D-Glucose
COMMENT     Distinguished from alpha-dextrin endo-1,6-alpha-glucosidase
            (EC 3.2.1.41) by the inability of isoamylase to attack pullulan,
            and by limited action on alpha-limit dextrins. Action on
            glycogen however is complete in contrast to limited action by
            alpha-dextrin glucanohydrolase. 1,6-Linkage hydrolysed only if at
            a branch point.
DBLINKS     University of Geneva ENZYME DATA BANK: 3.2.1.68
            WIT (What Is There) Metabolic Reconstruction: 3.2.1.68
///