1GWM:
reference: Promiscuity in ligand-binding: The three-dimensional structure of a Piromyces carbohydrate-binding module, CBM29-2, in complex with cello- and mannohexaose., Charnock SJ, Bolam DN, Nurizzo D, Szabo L, McKie VA, Gilbert HJ, Davies GJ, Proc Natl Acad Sci U S A 2002 Oct 29;99(22):14077-82. Epub 2002 Oct 21. PMID: 12391332

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