X-ray diffraction
2.2Å resolution

crystal structure of 1,4-BETA-D-XYLAN XYLOHYDROLASE solve using anomalous signal from Seleniomethionine

Entry authors: Jakoncic J, Shoham G, Stojanoff V

Function and Biology Details

Reaction catalysed:
Hydrolysis of (1->4)-beta-D-xylans, to remove successive D-xylose residues from the non-reducing termini
Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo tetramer (preferred)
Entry contents:
1 distinct polypeptide molecule
Beta-xylosidase Chains: A, B, C, D, E, F, G, H
Molecule details ›
Chains: A, B, C, D, E, F, G, H
Length: 503 amino acids
Theoretical weight: 58.15 KDa
Source organism: Geobacillus stearothermophilus
Expression system: Not provided
  • Canonical: Q9ZFM2 (Residues: 1-448, 449-504; Coverage: 100%)
Gene name: xynB
Sequence domains: Glycosyl hydrolases family 39
Structure domains:

Ligands and Environments

No bound ligands
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE BM14
Spacegroup: P212121
Unit cell:
a: 93.698Å b: 166.024Å c: 313.063Å
α: 90° β: 90° γ: 90°
R R work R free
0.177 0.174 0.242
Expression system: Not provided