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. 2016 Jul 18;7(8):562–570. doi: 10.1007/s13238-016-0293-2

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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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The ATPase and RNA unwinding activities of ZIKV helicase. (A) Determination of ATP hydrolysis activity of ZIKV helicase. The ATPase assay was carried out with 20 nmol/L of enzyme in the presence of the indicated concentrations of ATP for 20 min at 25°C. The double-reciprocal plot was fitted according to the Michaelis-Menten equation. (B) Measurement of dsRNA unwinding activity of ZIKV helicase. RNA unwinding activity of ZIKV helicase was assayed using a radiolabeled dsRNA substrate. The first lane is the positive control (heat-denatured duplex) and the second lane is the negative control (without ZIKV helicase)