› 1en2

X-ray diffraction
1.4Å resolution

UDA TETRASACCHARIDE COMPLEX. CRYSTAL STRUCTURE OF URTICA DIOICA AGGLUTININ, A SUPERANTIGEN PRESENTED BY MHC MOLECULES OF CLASS I AND CLASS II

Released:
DOI: 10.2210/pdb1en2/pdb
PDB entry 1en2 coloured by chain, front view.
PDB entry 1en2 coloured by chain, side view.
PDB entry 1en2 coloured by chain, top view.
Source organism: Urtica dioica
Primary publication:
Crystal structure of Urtica dioica agglutinin, a superantigen presented by MHC molecules of class I and class II.
Saul FA, Rovira P, Boulot G, Damme EJ, Peumans WJ, Truffa-Bachi P, Bentley GA
Structure 8 593-603 (2000)
PMID: 10873861

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
Sequence domains:
Structure domain:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-145715 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Lectin 1 Chain: A
Molecule details ›
Chain: A
Length: 89 amino acids
Theoretical weight: 9.35 KDa
Source organism: Urtica dioica
UniProt:
  • Canonical: P11218 (Residues: 24-112; Coverage: 26%)
Gene name: UDA1
Sequence domains: Chitin recognition protein

Ligands and Environments

Carbohydrate polymer : NEW Components: NAG
Carbohydrate polymer
No bound ligands
1 modified residue:
Ligand PCA 1 x PCA

Experiments and Validation Details

Entry percentile scores
X-ray source: LURE BEAMLINE D41A
Spacegroup: P212121
Unit cell:
a: 31.82Å b: 39.6Å c: 63.64Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.198 0.189 0.203

Quick links

Citations

7 review citations

Inhibition of HIV entry by carbohydrate-binding proteins.
Balzarini J. (2006)
6 more

7 mentions without citation

Carbohydrate-binding modules: fine-tuning polysaccharide recognition.
Boraston et al. (2004)
6 more