2bs9

X-ray diffraction
2.2Å resolution

Native crystal structure of a GH39 beta-xylosidase XynB1 from Geobacillus stearothermophilus

Released:

Function and Biology Details

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

Structure analysis Details

Assembly composition:
homo tetramer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-195634 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
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: 58.06 KDa
Source organism: Geobacillus stearothermophilus
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q9ZFM2 (Residues: 1-447, 448-504; Coverage: 100%)
Gene name: xynB
Sequence domains: Glycosyl hydrolases family 39
Structure domains:

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-2
Spacegroup: P212121
Unit cell:
a: 92.668Å b: 165.744Å c: 311.004Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.211 0.209 0.259
Expression system: Escherichia coli BL21(DE3)