KEGG ENZYME: 3.2.1.142

ENZYME: 3.2.1.142

Entry

EC 3.2.1.142                Enzyme

Name

limit dextrinase;
R-enzyme;
amylopectin-1,6-glucosidase;
dextrin alpha-1,6-glucanohydrolase

Class

Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds

Sysname

dextrin 6-alpha-glucanohydrolase

Reaction(IUBMB)

Hydrolysis of (1->6)-alpha-D-glucosidic linkages in alpha- and beta-limit dextrins of amylopectin and glycogen, and in amylopectin and pullulan

Comment

Plant enzymes with little or no action on glycogen. Action on amylopectin is incomplete, but action on alpha-limit dextrins is complete. Maltose is the smallest sugar it can release from an alpha-(1->6)-linkage.

History

EC 3.2.1.142 created 2000

Reference

Authors

Gordon RW, Manners DJ, Stark JR.

Title

The limit dextrinase of the broad bean (Vicia faba).

Journal

Carbohydr Res 42:125-134 (1975)

Reference

Authors

Manners DJ.

Title

Observations on the specificity and nomenclature of starch debranching enzymes.

Journal

J Appl Glycosci 44:83-85 (1997)

Other DBs

ExplorEnz - The Enzyme Database:

3.2.1.142

IUBMB Enzyme Nomenclature:

3.2.1.142

ExPASy - ENZYME nomenclature database:

3.2.1.142

BRENDA, the Enzyme Database:

3.2.1.142

LinkDB

DBGET integrated database retrieval system