CATH Classification

Domain Context

CATH Clusters

Superfamily 1.50.10.10
Functional Family

Enzyme Information

3.2.1.156
Oligosaccharide reducing-end xylanase.
based on mapping to UniProt Q9KB30
Hydrolysis of (1->4)-beta-D-xylose residues from the reducing end of oligosaccharides.
-!- The enzyme, originally isolated from the bacterium Bacillus halodurans C-125, releases the xylose unit at the reducing end of oligosaccharides ending with the structure beta-D-xylopyranosyl- (1->4)-beta-D-xylopyranosyl-(1->4)-beta-D-xylopyranose, leaving the new reducing end in the alpha configuration. -!- It is specific for the beta anomers of xylooligosaccharides whose degree of polymerization is equal to or greater than 3. -!- The penultimate residue must be beta-D-xylopyranose, but replacing either of the flanking residues with glucose merely slows the rate greatly.

UniProtKB Entries (1)

Q9KB30
REOX_BACHD
Bacillus halodurans C-125
Reducing end xylose-releasing exo-oligoxylanase

PDB Structure

PDB 1WU6
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Structural Basis for the Specificity of the Reducing End Xylose-releasing Exo-oligoxylanase from Bacillus halodurans C-125
Fushinobu, S., Hidaka, M., Honda, Y., Wakagi, T., Shoun, H., Kitaoka, M.
J.Biol.Chem.