KEGG   ENZYME: 3.2.1.156Help
Entry
EC 3.2.1.156                Enzyme                                 

Name
oligosaccharide reducing-end xylanase;
Rex;
reducing end xylose-releasing exo-oligoxylanase
Class
Hydrolases;
Glycosylases;
Glycosidases, i.e. enzymes that hydrolyse O- and S-glycosyl compounds
BRITE hierarchy
Sysname
beta-D-xylopyranosyl-(1->4)-beta-D-xylopyranose reducing-end xylanase
Reaction(IUBMB)
Hydrolysis of (1->4)-beta-D-xylose residues from the reducing end of oligosaccharides
Comment
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.
History
EC 3.2.1.156 created 2005
Orthology
K15531  oligosaccharide reducing-end xylanase
Genes
PSU: Psesu_1642
PSUW: WQ53_15240
PBW: D172_007475 D172_007575
PEA: PESP_a2206
LAL: AT746_17515
TTU: TERTU_4506
SCL: sce3034(xynA1) sce3220(xynB1)
SCU: SCE1572_01605 SCE1572_33355
SPAN: AWL63_12905
BLH: BaLi_c13740
BHA: BH2105
BGY: BGLY_2144
AXL: AXY_02640
PMW: B2K_23280
PRI: PRIO_5053
LLK: LLKF_1370
LLS: lilo_1253
LLC: LACR_1432
LLM: llmg_1166
LLW: kw2_1262
LLJ: LG36_1096
HSC: HVS_07865
BPB: bpr_I1513(xyn8A)
BFI: CIY_10200
BHU: bhn_I1756
RIX: RO1_26360
RIM: ROI_37850
CPY: Cphy_3207
HSD: SD1D_1946
ERT: EUR_20710
ERA: ERE_20750
BLL: BLJ_1599
BAD: BAD_0300
BADL: BADO_0309
BANG: BBAG_0150
BCAT: BBCT_0289
ATM: ANT_28570
OTE: Oter_4314
FSC: FSU_0613
PRU: PRU_1268
DORI: FH5T_02230
CHU: CHU_1240
SLI: Slin_1409
FAE: FAES_2330
FLM: MY04_4897
FJO: Fjoh_3868
 » show all
Taxonomy
Reference
1  [PMID:15491996]
  Authors
Honda Y, Kitaoka M.
  Title
A family 8 glycoside hydrolase from Bacillus halodurans C-125 (BH2105) is a reducing end xylose-releasing exo-oligoxylanase.
  Journal
J Biol Chem 279:55097-103 (2004)
DOI:10.1074/jbc.M409832200
  Sequence
[bha:BH2105]
Reference
2  [PMID:15718242]
  Authors
Fushinobu S, Hidaka M, Honda Y, Wakagi T, Shoun H, Kitaoka M.
  Title
Structural basis for the specificity of the reducing end xylose-releasing exo-oligoxylanase from Bacillus halodurans C-125.
  Journal
J Biol Chem 280:17180-6 (2005)
DOI:10.1074/jbc.M413693200
  Sequence
[bha:BH2105]
Other DBs
ExplorEnz - The Enzyme Database: 3.2.1.156
IUBMB Enzyme Nomenclature: 3.2.1.156
ExPASy - ENZYME nomenclature database: 3.2.1.156
BRENDA, the Enzyme Database: 3.2.1.156
CAS: 879497-03-7

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