CATH Classification

Domain Context

CATH Clusters

Superfamily 2.60.120.200
Functional Family

Enzyme Information

3.2.1.81
Beta-agarase.
based on mapping to UniProt Q9RGX8
Hydrolysis of (1->4)-beta-D-galactosidic linkages in agarose, giving the tetramer as the predominant product.
-!- Also acts on porphyran, but more slowly. -!- Cleaves the beta-(1->4) linkages of agarose in a random manner with retention of the anomeric-bond configuration, producing beta-anomers that give rise progressively to alpha-anomers when mutarotation takes place. -!- The end products of hydrolysis are neoagarotetraose and neoagarohexaose in the case of AgaA from the marine bacterium Zobellia galactanivorans, and neoagarotetraose and neoagarobiose in the case of AgaB.

UniProtKB Entries (1)

Q9RGX8
AGAB_ZOBGA
Zobellia galactanivorans
Beta-agarase B

PDB Structure

PDB 1O4Z
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
The Three-dimensional Structures of Two {beta}-Agarases.
Allouch, J., Jam, M., Helbert, W., Barbeyron, T., Kloareg, B., Henrissat, B., Czjzek, M.
J.Biol.Chem.
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