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NMR structure of the i-motif tetramer of d(AACCCC)
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY pH 4.5 to 6 H2O/D2O solution no added salt 4.5 ambient 273 2 2D TOCSY
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 500
NMR Refinement Method Details Software simulated annealing 96 NOE-derived distances constraints and 12 distance restraints for hydrogen bonds derived from proton exchange measurements X-PLOR
NMR Ensemble Information Conformer Selection Criteria back calculated data agree with experimental NOESY spectrum Conformers Calculated Total Number 10 Conformers Submitted Total Number 1 Representative Model 1 (fewest violations)
Additional NMR Experimental Information Details This structure was determined using standard 2D homonuclear techniques
Computation: NMR Software # Classification Version Software Name Author 1 structure solution X-PLOR 3.851 Brunger A.T. 2 refinement X-PLOR 3.851 Brunger A.T.