3MF6:
reference: Computational design of an endo-1,4-{beta}-xylanase ligand binding site., Morin A, Kaufmann KW, Fortenberry C, Harp JM, Mizoue LS, Meiler J, Protein Eng Des Sel. 2011 Feb 24. PMID: 21349882

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