4A8V:
reference: Crystallographically Mapped Ligand Binding Differs in High and Low IgE Binding Isoforms of Birch Pollen Allergen Bet v 1., Kofler S, Asam C, Eckhard U, Wallner M, Ferreira F, Brandstetter H, J Mol Biol. 2012 Sep 7;422(1):109-23. Epub 2012 May 23. PMID: 22634284

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