2J6X:
reference: The 2.1 A structure of Aerococcus viridans L-lactate oxidase (LOX)., Leiros I, Wang E, Rasmussen T, Oksanen E, Repo H, Petersen SB, Heikinheimo P, Hough E, Acta Crystallograph Sect F Struct Biol Cryst Commun. 2006 Dec 1;62(Pt, 12):1185-90. Epub 2006 Nov 4. PMID: 17142893

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