3WQO:
reference: Structure of D-tagatose 3-epimerase-like protein from Methanocaldococcus jannaschii., Uechi K, Takata G, Yoneda K, Ohshima T, Sakuraba H, Acta Crystallogr F Struct Biol Commun. 2014 Jul;70(Pt 7):890-5. doi:, 10.1107/S2053230X14011005. Epub 2014 Jun 18. PMID: 25005083

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