Figure 1: 1H NMR spectrum of VK1.
From: A tetrahelical DNA fold adopted by tandem repeats of alternating GGG and GCG tracts
The assignment of imino protons of guanine residues and C14 H2′, C6 H2″, A12 H2″ and A8 H2″ protons is indicated. A signal of unknown impurity is labelled with *. The spectrum was recorded at 2.8 mM oligonucleotide concentration per strand, 100 mM LiCl, pH 6 and 0 °C on an 800 MHz spectrometer.
