X-ray diffraction
1.7Å resolution

Chitinase B from Serratia marcescens complexed with the catalytic intermediate mimic cyclic dipeptide CI4.


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:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Chitinase B Chains: A, B
Molecule details ›
Chains: A, B
Length: 499 amino acids
Theoretical weight: 55.52 KDa
Source organism: Serratia marcescens
Expression system: Escherichia coli BL21
  • Canonical: P11797 (Residues: 1-499; Coverage: 100%)
Gene name: chiB
Sequence domains: Glycosyl hydrolases family 18
Structure domains:

Ligands and Environments

3 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID29
Spacegroup: P212121
Unit cell:
a: 55.805Å b: 103.743Å c: 186.283Å
α: 90° β: 90° γ: 90°
R R work R free
0.17 0.17 0.195
Expression system: Escherichia coli BL21