CATH Classification

Domain Context

CATH Clusters

Superfamily Glycosidases
Functional Family 1,4-alpha-glucan branching enzyme

Enzyme Information

2.4.1.18
1,4-alpha-glucan branching enzyme.
based on mapping to UniProt Q04446
Transfers a segment of a (1->4)-alpha-D-glucan chain to a primary hydroxy group in a similar glucan chain.
-!- Converts amylose into amylopectin. -!- The description (official name) requires a qualification depending on the product, glycogen or amylopectin, e.g. glycogen branching enzyme, amylopectin branching enzyme. -!- The latter has frequently been termed Q-enzyme.

UniProtKB Entries (1)

Q04446
GLGB_HUMAN
Homo sapiens
1,4-alpha-glucan-branching enzyme

PDB Structure

PDB 5CLW
External Links
Method X-RAY DIFFRACTION
Organism
Primary Citation
Crystal structure of human glycogen branching enzyme (GBE1) in complex with maltoheptaose
Krojer, T., Froese, D.S., Goubin, S., Strain-Damerell, C., Mahajan, P., Burgess-Brown, N., von Delft, F., Bountra, C., Arrowsmith, C.H., Edwards, A., Yue, W., Structural Genomics Consortium (SGC)
To be published