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NMR Structure of a Parallel Stranded DNA Duplex at Atomic Resolution
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 COSY, NOESY, TOCSY 5 mM concentration of each dodecamer strand, 0.05 M deuterated sodium acetate buffer and 0.1 M NaCl 90% H2O/10% D2O 100mM NaCl 5.5 ambient 303
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Varian UNITY 600
NMR Refinement Method Details Software simulated annealing,
molecular dynamics Structure was calculated using 78 nOe constraints, 28 hydrogen bond constraints, and 162 dihedral angle constraints. Discover
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 200 Conformers Submitted Total Number 20 Representative Model 20 (fewest violations,lowest energy)
Additional NMR Experimental Information Details Structure was determined using 2D homonuclear experiments.
Computation: NMR Software # Classification Version Software Name Author 1 structure solution Discover 3.1 MSI 2 refinement Discover 3.1 MSI