8ZEQ | pdb_00008zeq

Molecular Architecture of Human Glycogen Debranching Enzyme: Insights into Glycogen Storage Disease III Pathogenesis


Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
PF14702Central domain of human glycogen debranching enzyme (hGDE_central)Central domain of human glycogen debranching enzymeThis is a central domain of the eukaryotic variant of the glycogen debranching enzyme (GDE). The eukaryotic GDE performs two functions: 4-alpha-D-glucanotransferase, EC:2.4.1.25, and Amylo-alpha-1,6-glucosidase, EC:3.2.1.33, performed by the, respect ...This is a central domain of the eukaryotic variant of the glycogen debranching enzyme (GDE). The eukaryotic GDE performs two functions: 4-alpha-D-glucanotransferase, EC:2.4.1.25, and Amylo-alpha-1,6-glucosidase, EC:3.2.1.33, performed by the, respectively N- and C- terminal halves of eukaryotic GDE enzyme This central domain follows the glucanotransferase domain and precedes the glucosidase (GDE_N) domain. It is very likely that the current definition contains two or more domains, by analogy with bacterial GDEs, this domain should be involved in substrate- binding either for the N-terminal glucanotransferase and/or the the C-terminal glucosidase (or both).
Domain
PF06202Amylo-alpha-1,6-glucosidase (GDE_C)Amylo-alpha-1,6-glucosidase- Repeat
PF14699N-terminal domain from the human glycogen debranching enzyme (hGDE_N)N-terminal domain from the human glycogen debranching enzyme- Family
PF14701Glycogen debranching enzyme, glucanotransferase domain (hDGE_amylase)Glycogen debranching enzyme, glucanotransferase domainThis is a glucanotransferase catalytic domain of the eukaryotic variant of the glycogen debranching enzyme (GDE). The eukaryotic GDEs performs two functions: 4-alpha-D-glucanotransferase, EC:2.4.1.25, and Amylo-alpha-1,6-glucosidase, EC:3.2.1.33, per ...This is a glucanotransferase catalytic domain of the eukaryotic variant of the glycogen debranching enzyme (GDE). The eukaryotic GDEs performs two functions: 4-alpha-D-glucanotransferase, EC:2.4.1.25, and Amylo-alpha-1,6-glucosidase, EC:3.2.1.33, performed by the, respectively N- and C- terminal halves of eukaryotic GDE enzymes. The domain is a catalytic domain responsible for the glucanotransferase function. It belongs to the alpha-amylase clan and is predicted to have a structure of a 8-stranded alpha/beta barrel (TIM barrel) where strands are interrupted by long loops and additional mini-domains. In most other amylases, the catalytic domain is followed by a beta- barrel substrate binding domain, but presence of such a domain cannot be verified in the human (and other eukaryotic) GDE enzymes.
Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
Glycogen debranching enzyme