5EDD:
reference: Structural Characterization of Arginine Fingers: Identification of an Arginine Finger for the Pyrophosphatase dUTPases., Nagy GN, Suardiaz R, Lopata A, Ozohanics O, Vekey K, Brooks BR, Leveles I, Toth J, Vertessy BG, Rosta E, J Am Chem Soc. 2016 Oct 14. PMID: 27740761

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