1QOR:
reference: Crystal structure of Escherichia coli QOR quinone oxidoreductase complexed with NADPH., Thorn JM, Barton JD, Dixon NE, Ollis DL, Edwards KJ, J Mol Biol. 1995 Jun 16;249(4):785-99. PMID: 7602590

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