3K7Q:
reference: Crystal Structure Analysis of Free and Substrate-Bound 6-Hydroxy-l-Nicotine Oxidase from Arthrobacter nicotinovorans., Kachalova GS, Bourenkov GP, Mengesdorf T, Schenk S, Maun HR, Burghammer M, Riekel C, Decker K, Bartunik HD, J Mol Biol. 2009 Dec 16. PMID: 20006620

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