2BGO:
reference: Structure of a mannan-specific family 35 carbohydrate-binding module: evidence for significant conformational changes upon ligand binding., Tunnicliffe RB, Bolam DN, Pell G, Gilbert HJ, Williamson MP, J Mol Biol. 2005 Mar 25;347(2):287-96. PMID: 15740741

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