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Information on EC 3.2.1.156 - oligosaccharide reducing-end xylanase

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IUBMB Comments
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.
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Word Map
The enzyme appears in viruses and cellular organisms
Synonyms
GH8 xylanase, More, PhXyl, reducing end xylose-releasing exo-oligoxylanase, reducing-end xylose-releasing exo-oligoxylanase, reducing-end xylose-releasing exooligoxylanase, Rex, Rex8A, RexA, rXyn8, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
Hydrolysis of (1->4)-beta-D-xylose residues from the reducing end of oligosaccharides
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