MetaCyc Reaction:

Superclasses: Reactions Classified By Conversion Type Simple Reactions Chemical Reactions
Reactions Classified By Substrate Small-Molecule Reactions

EC Number:

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the direction in which it was curated.

Mass balance status: Balance undetermined; a substrate lacks a chemical formula

Enzyme Commission Primary Name: limit dextrinase

Enzyme Commission Synonyms: R-enzyme, amylopectin-1,6-glucosidase, dextrin α-1,6-glucanohydrolase

Taxonomic Range: Viridiplantae

Enzyme Commission Summary:
This enzyme catalyzes hydrolysis of (1->6)-α-D-glucosidic linkages in α- and β-limit dextrins of amylopectin and glycogen, and in amylopectin and pullulan.

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.

Citations: [Gordon75, Manners97]

Relationship Links: BRENDA:EC: , ENZYME:EC: , IUBMB-ExplorEnz:EC:


Gordon75: Gordon, R.W, Manners, D.J., Stark, J.R. (1975). "The limit dextrinase of the broad bean (Vicia faba)." Carbohydr. Res.

Manners97: Manners, D.J. (1997). "Observations on the specificity and nomenclature of starch debranching enzymes." J. Appl. Glycosci.

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Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
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