5EJ0:
reference: The Vaccinia Virus H3 Envelope Protein, a Major Target of Neutralizing Antibodies, Exhibits a Glycosyltransferase Fold and Binds UDP-Glucose., Singh K, Gittis AG, Gitti RK, Ostazeski SA, Su HP, Garboczi DN, J Virol. 2016 Apr 29;90(10):5020-30. doi: 10.1128/JVI.02933-15. Print 2016 May, 15. PMID: 26937025

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