1QAF:
reference: The active site base controls cofactor reactivity in Escherichia coli amine oxidase: x-ray crystallographic studies with mutational variants., Murray JM, Saysell CG, Wilmot CM, Tambyrajah WS, Jaeger J, Knowles PF, Phillips SE, McPherson MJ, Biochemistry 1999 Jun 29;38(26):8217-27. PMID: 10387067

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