X-ray diffraction
1.87Å resolution

The crystal structures of YKL-39 in the presence of chitooligosaccharides (GlcNAc4) were solved to resolutions of 1.9 angstrom


Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Chitinase-3-like protein 2 Chain: A
Molecule details ›
Chain: A
Length: 371 amino acids
Theoretical weight: 41.62 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
  • Canonical: Q15782 (Residues: 27-390; Coverage: 100%)
  • Best match: Q15782-6 (Residues: 17-380)
Gene name: CHI3L2
Structure domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: NDG, NAG
1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: NSRRC BEAMLINE BL13B1
Spacegroup: P41212
Unit cell:
a: 71.354Å b: 71.354Å c: 140.528Å
α: 90° β: 90° γ: 90°
R R work R free
0.188 0.186 0.236
Expression system: Escherichia coli BL21(DE3)