5Y5Q:
reference: The dUTPase of white spot syndrome virus assembles its active sites in a noncanonical manner., Zang K, Li F, Ma Q, J Biol Chem. 2017 Nov 29. pii: M117.815266. doi: 10.1074/jbc.M117.815266. PMID: 29187596

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