3A9G:
reference: Catalytic properties and crystal structure of quinoprotein aldose sugar dehydrogenase from hyperthermophilic archaeon Pyrobaculum aerophilum., Sakuraba H, Yokono K, Yoneda K, Watanabe A, Asada Y, Satomura T, Yabutani T, Motonaka J, Ohshima T, Arch Biochem Biophys. 2010 Oct 15;502(2):81-8. Epub 2010 Aug 6. PMID: 20692227

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