5K8I:
reference: Molecular mechanism of divalent-metal-induced activation of NS3 helicase and insights into Zika virus inhibitor design., Cao X, Li Y, Jin X, Li Y, Guo F, Jin T, Nucleic Acids Res. 2016 Dec 1;44(21):10505-10514. doi: 10.1093/nar/gkw941. Epub, 2016 Oct 19. PMID: 27915293

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