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. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: Biochim Biophys Acta Gen Subj. 2017 Dec 28;1862(4):846–854. doi: 10.1016/j.bbagen.2017.12.011

Fig. 2.

Fig. 2.

(A) The extended PDGFR-β NHE 3′-end sequence and the minimal 3′-end sequences Pu18 and Pu19 used in the previous studies [26,29]. The G-runs are underlined and numbered. (B) Schematic drawing of the proposed parallel-stranded G-quadruplex formed in Pu18 and Pu19 with a G:G:G:A 3′-external tetrad (G = red, A = green, C = yellow, T = blue). (C) Imino regions of 1D NMR spectra of Pu18 (top) and Pu19 (bottom) at 25 °C in 50 mM K+ solution at pH 7. (D) Schematic drawing of a G-tetrad.