3WQ7:
reference: A new crystal form of a hyperthermophilic endocellulase., Kataoka M, Ishikawa K, Acta Crystallogr F Struct Biol Commun. 2014 Jul;70(Pt 7):878-83. doi:, 10.1107/S2053230X14010930. Epub 2014 Jun 18. PMID: 25005081

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