4EIS:
reference: Structural Basis for Substrate Targeting and Catalysis by Fungal Polysaccharide Monooxygenases., Li X, Beeson WT 4th, Phillips CM, Marletta MA, Cate JH, Structure. 2012 May 9. PMID: 22578542

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