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A tetrahelical DNA fold adopted by alternating GGG and GCG tracts
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H NOESY 2.8 mM DNA, 1 mM partial residue specific 15N DNA, 1 mM residue specific 2H DNA 90% H2O/10% D2O 100 6 ambient 273 2 2D DQF-COSY 2.8 mM DNA, 1 mM partial residue specific 15N DNA, 1 mM residue specific 2H DNA 90% H2O/10% D2O 100 6 ambient 273 3 2D 1H-1H TOCSY 2.8 mM DNA, 1 mM partial residue specific 15N DNA, 1 mM residue specific 2H DNA 90% H2O/10% D2O 100 6 ambient 273 4 2D 1H-31P COSY 2.8 mM DNA, 1 mM partial residue specific 15N DNA, 1 mM residue specific 2H DNA 90% H2O/10% D2O 100 6 ambient 273 5 2D 1H-15N HSQC 2.8 mM DNA, 1 mM partial residue specific 15N DNA, 1 mM residue specific 2H DNA 90% H2O/10% D2O 100 6 ambient 273
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Agilent VNMRS 800 2 Agilent VNMRS 600 3 Agilent DD2 600
NMR Refinement Method Details Software simulated annealing Amber
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 100 Conformers Submitted Total Number 10 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 structure solution Amber 11 Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, ... and Kollman 2 refinement Amber Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, ... and Kollman