5UFV:
reference: The Role of the Secondary Coordination Sphere in a Fungal Polysaccharide Monooxygenase., Span EA, Suess DL, Deller MC, Britt RD, Marletta MA, ACS Chem Biol. 2017 Mar 3. doi: 10.1021/acschembio.7b00016. PMID: 28257189

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