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. 2005 Jan 19;33(2):497–510. doi: 10.1093/nar/gki192

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© 2005, the authors Nucleic Acids Research, Vol. 33 No. 2 © Oxford University Press 2005; all rights reserved

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Aromatic (H6/H8) region from ¹H NMR spectra of Fe²⁺ titrations of modified duplexes. All samples were in 90% H₂O/10% D₂O and contained 130 mM NaCl. Fe²⁺ concentrations are indicated at the right of the spectra. Filled arrows indicate preferential broadening, asterisks (*) indicate shifting among aromatic proton resonances, and non-filled arrows indicate the Z H8 proton resonances. (A) 0.68 mM AZGG duplex. (B) 0.3 mM AGZG duplex. (C) 0.5 mM AGGZ duplex. (D) 1.15 mM AGGT duplex.

Aromatic (H6/H8) region from ¹H NMR spectra of Fe²⁺ titrations of modified duplexes. All samples were in 90% H₂O/10% D₂O and contained 130 mM NaCl. Fe²⁺ concentrations are indicated at the right of the spectra. Filled arrows indicate preferential broadening, asterisks (*) indicate shifting among aromatic proton resonances, and non-filled arrows indicate the Z H8 proton resonances. (A) 0.68 mM AZGG duplex. (B) 0.3 mM AGZG duplex. (C) 0.5 mM AGGZ duplex. (D) 1.15 mM AGGT duplex.