PDBe 1iqb

X-ray diffraction
1.9Å resolution

Crystal Structure of Urtica dioica Agglutinin Isolectin I

Source organism: Urtica dioica

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

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Entry contents:
1 distinct polypeptide molecule
Lectin 1 Chains: A, B
Molecule details ›
Chains: A, B
Length: 89 amino acids
Theoretical weight: 9.41 KDa
Source organism: Urtica dioica
  • Canonical: P11218 (Residues: 24-112; Coverage: 26%)
Gene name: UDA1
Sequence domains: Chitin recognition protein

Ligands and Environments

1 bound ligand:

1 modified residue:

Experiments and Validation Details

Entry percentile scores
X-ray source: ENRAF-NONIUS FR571
Spacegroup: P21
Unit cell:
a: 30.71Å b: 42.11Å c: 62.59Å
α: 90° β: 101.55° γ: 90°
R R work R free
0.205 0.205 0.26