1F5V:
reference: Structure and site-directed mutagenesis of a flavoprotein from Escherichia coli that reduces nitrocompounds: alteration of pyridine nucleotide binding by a single amino acid substitution., Kobori T, Sasaki H, Lee WC, Zenno S, Saigo K, Murphy ME, Tanokura M, J Biol Chem 2001 Jan 26;276(4):2816-23. PMID: 11034992

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