PDBe 3iwr

X-ray diffraction
2.57Å resolution

Crystal structure of class I chitinase from Oryza sativa L. japonica


Function and Biology Details

Reaction catalysed:
Random endo-hydrolysis of N-acetyl-beta-D-glucosaminide (1->4)-beta-linkages in chitin and chitodextrins
Biochemical function:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Chitinase 2 Chains: A, B
Molecule details ›
Chains: A, B
Length: 309 amino acids
Theoretical weight: 32.74 KDa
Source organism: Oryza sativa Japonica Group
Expression system: Escherichia coli
  • Canonical: Q7DNA1 (Residues: 33-340; Coverage: 100%)
Gene names: Cht2, LOC_Os05g33130, Os05g0399300, OsJ_18467, RC7
Sequence domains:
Structure domains:

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL38B1
Spacegroup: P65
Unit cell:
a: 117.082Å b: 117.082Å c: 77.971Å
α: 90° β: 90° γ: 120°
R R work R free
0.182 0.179 0.236
Expression system: Escherichia coli