PDBe 2bnj

X-ray diffraction
1.6Å resolution

The xylanase TA from Thermoascus aurantiacus utilizes arabinose decorations of xylan as significant substrate specificity determinants.


Function and Biology Details

Reaction catalysed:
Endohydrolysis of (1->4)-beta-D-xylosidic linkages in xylans
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Endo-1,4-beta-xylanase Chain: A
Molecule details ›
Chain: A
Length: 303 amino acids
Theoretical weight: 32.85 KDa
Source organism: Thermoascus aurantiacus
  • Canonical: P23360 (Residues: 27-329; Coverage: 100%)
Gene name: XYNA
Sequence domains: Glycosyl hydrolase family 10
Structure domains: Glycosidases

Ligands and Environments

3 bound ligands:

1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU
Spacegroup: C2
Unit cell:
a: 88.224Å b: 49.462Å c: 77.384Å
α: 90° β: 125.38° γ: 90°
R R work R free
0.117 0.115 0.147