5K9H:
reference: The structure of a glycoside hydrolase 29 family member from a rumen bacterium reveals unique, dual carbohydrate-binding domains., Summers EL, Moon CD, Atua R, Arcus VL, Acta Crystallogr F Struct Biol Commun. 2016 Oct 1;72(Pt 10):750-761. Epub 2016, Sep 22. PMID: 27710940

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