2D4V:
reference: Structure and quantum chemical analysis of NAD+-dependent isocitrate dehydrogenase: hydride transfer and co-factor specificity., Imada K, Tamura T, Takenaka R, Kobayashi I, Namba K, Inagaki K, Proteins. 2008 Jan 1;70(1):63-71. PMID: 17634983

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