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Solution structure of the 3'E topology of the i-motif tetramer of d(CCCCAA)
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY pH 4.5 H2O/D2O no added salt 4.5 normal 273 2 2D TOCSY pH 4.5 H2O/D2O no added salt 4.5 normal 273 3 HMBC pH 4.5 H2O/D2O no added salt 4.5 normal 273
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian INOVA 500
NMR Refinement Method Details Software simulated annealing 54 NOE-derived distance constraints and 12 distances constraints for H-bonding 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 standard 2 D methods
Computation: NMR Software # Classification Version Software Name Author 1 structure solution X-PLOR Brunger, A.T. 2 refinement X-PLOR Brunger, A.T.