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. 2018 May 31;19(6):1633. doi: 10.3390/ijms19061633

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Characterization of the DNA assemblies and ATP aptamer structure. (A) Characterization of Y-scaffold and B-linker by 20% native PAGE. Three ssDNAs Y1 (Lane 1), Y2 (Lane 2), and Y3 (Lane 3) hybridized to form the Y-scaffold (Lane 4), and two ssDNAs B1 (Lane 5) and B2 (Lane 6) assembled into the linear B-linker (Lane 7); (B) CD spectra to characterize the conformation of the aptamer sequence in DNA strand B1 with or without ATP; and (C) Isothermal titration calorimetry (ITC) data (left) and fitting curve (right) of binding strength between B1 and ATP.