Glycogen Debranching Enzyme (AGL) Antibody – Rabbit Polyclonal

This gene encodes the glycogen debrancher enzyme which is involved in glycogen degradation. This enzyme has two independent catalytic activities which occur at different sites on the protein: a 4-alpha-glucotransferase activity and a amylo-1,6-glucosidase activity. Mutations in this gene are associated with glycogen storage disease although a wide range of enzymatic and clinical variability occurs which may be due to tissue-specific alternative splicing. Alternatively spliced transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

GDE: Multifunctional enzyme acting as 1,4-alpha-D-glucan:1,4- alpha-D-glucan 4-alpha-D-glycosyltransferase and amylo-1,6- glucosidase in glycogen degradation. Defects in AGL are the cause of glycogen storage disease type 3 (GSD3); also known as Forbes disease. GSD3 is a metabolic disorder associated with an accumulation of abnormal glycogen with short outer chains. Three GSD3 types are recognized: GSD type 3A patients lack glycogen debrancher enzyme activity in both liver and muscle, while GSD type 3B patients are enzyme- deficient in liver only. In rare cases, selective loss of only 1 of the 2 debranching activities, glucosidase or transferase, results in GSD type 3C or type 3D, respectively. GSD3 is clinically characterized by hepatomegaly, hypoglycemia, short stature, and variable myopathy. Belongs to the glycogen debranching enzyme family. 3 isoforms of the human protein are produced by alternative splicing.

Protein type: Carbohydrate Metabolism - starch and sucrose; EC 2.4.1.25; EC 3.2.1.33; Hydrolase; Transferase; Ubiquitin conjugating system

Chromosomal Location of Human Ortholog: 1p21.2

Cellular Component: cytoplasm; cytosol; extracellular region; ficolin-1-rich granule lumen; inclusion body; isoamylase complex; nucleus; sarcoplasmic reticulum; secretory granule lumen

Molecular Function: 4-alpha-glucanotransferase activity; amylo-alpha-1,6-glucosidase activity; glycogen debranching enzyme activity; polysaccharide binding; polyubiquitin modification-dependent protein binding; protein binding

Biological Process: glycogen biosynthetic process; glycogen catabolic process; neutrophil degranulation; response to glucocorticoid stimulus; response to nutrient

Disease: Glycogen Storage Disease Iii