5LTF:
reference: Crystal structures of Lymphocytic choriomeningitis virus endonuclease domain complexed with diketo-acid ligands., Saez-Ayala M, Yekwa EL, Carcelli M, Canard B, Alvarez K, Ferron F, IUCrJ. 2018 Feb 22;5(Pt 2):223-235. doi: 10.1107/S2052252518001021. eCollection, 2018 Mar 1. PMID: 29765612

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