1SPU:
reference: Catalytic mechanism of the quinoenzyme amine oxidase from Escherichia coli: exploring the reductive half-reaction., Wilmot CM, Murray JM, Alton G, Parsons MR, Convery MA, Blakeley V, Corner AS, Palcic MM, Knowles PF, McPherson MJ, Phillips SE, Biochemistry 1997 Feb 18;36(7):1608-20. PMID: 9048544

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