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. 2013 Aug 5;41(19):9077–9089. doi: 10.1093/nar/gkt674

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© The Author(s) 2013. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — P/T sequences used in this study. (A) P/T sequences used in chemical quench experiments. (B) P/T sequence used in the fluorescence titration assay. 2AP is 2-amino purine, and _ddC is dideoxy-dC. (C) P/T sequences used in tC^o-tC_nitro FRET assay. (D) P/T sequences used for X-ray crystallography. _ddT and _ddG are dideoxy-dT and dideoxy-dG, respectively.