3AJR:
reference: Crystal Structure of Binary and Ternary Complexes of Archaeal UDP-galactose 4-Epimerase-like L-Threonine Dehydrogenase from Thermoplasma volcanium., Yoneda K, Sakuraba H, Araki T, Ohshima T, J Biol Chem. 2012 Apr 13;287(16):12966-74. Epub 2012 Feb 28. PMID: 22374996

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