2G2Q:
reference: The structure of G4, the poxvirus disulfide oxidoreductase essential for virus maturation and infectivity., Su HP, Lin DY, Garboczi DN, J Virol. 2006 Aug;80(15):7706-13. PMID: 16840349

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