1EN2:
reference: 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. 2000 Jun 15;8(6):593-603. PMID: 10873861

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).