6ADX:
reference: Crystallographic Snapshots of the Zika Virus NS3 Helicase Help Visualize the Reactant Water Replenishment., Fang J, Jing X, Lu G, Xu Y, Gong P, ACS Infect Dis. 2019 Feb 8;5(2):177-183. doi: 10.1021/acsinfecdis.8b00214. Epub, 2019 Jan 28. PMID: 30672289

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