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NMR solution structure of modified DNA containing imidazole nucleosides at acidic pH
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H NOESY 0.5 mM DIH DNA 17-mer, 120 mM sodium perchlorate 100% D2O 120 mM 4.7 ambient 298 2 2D 1H-1H TOCSY 0.5 mM DIH DNA 17-mer, 120 mM sodium perchlorate 100% D2O 120 mM 4.7 ambient 298 3 2D 1H-13C HSQC 0.5 mM DIH DNA 17-mer, 120 mM sodium perchlorate 100% D2O 120 mM 4.7 ambient 298 4 2D 1H-1H NOESY 0.5 mM DIH DNA 17-mer, 120 mM sodium perchlorate 90% H2O/10% D2O 120 mM 4.7 ambient 278
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 700
NMR Refinement Method Details Software torsion angle dynamics, simulated annealing TopSpin
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 200 Conformers Submitted Total Number 20 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 processing TopSpin 1.3, 2.0, 2.1 Bruker Biospin 2 chemical shift assignment Sparky 3.1 Goddard 3 data analysis Sparky 3.1 Goddard 4 peak picking Sparky 3.1 Goddard 5 structure solution DYANA 1.5 Guntert, Braun and Wuthrich 6 refinement X-PLOR NIH 2.15 Schwieters, Kuszewski, Tjandra and Clore