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NMR structures of small molecules bound to a model of an RNA CAG repeat expansion.
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H NOESY 0.7 mM RNA (5'-R(*GP*AP*CP*AP*GP*CP*AP*GP*CP*UP*GP*UP*C)-3'), 5 mM potassium phosphate, 0.25 mM EDTA 100% D2O 5 mM 6.0 1 atm 298 Bruker AVANCE III HD 700 2 2D DQF-COSY 0.7 mM RNA (5'-R(*GP*AP*CP*AP*GP*CP*AP*GP*CP*UP*GP*UP*C)-3'), 5 mM potassium phosphate, 0.25 mM EDTA 100% D2O 5 mM 6.0 1 atm 298 Bruker AVANCE III HD 700 3 2D 1H-1H NOESY 0.7 mM RNA (5'-R(*GP*AP*CP*AP*GP*CP*AP*GP*CP*UP*GP*UP*C)-3'), 5 mM potassium phosphate, 0.25 mM EDTA 95% H2O/5% D2O 5 mM 6.0 1 atm 278 Bruker AVANCE III HD 700
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE III HD 700
NMR Refinement Method Details Software simulated annealing Amber
NMR Ensemble Information Conformer Selection Criteria structures with the least restraint violations Conformers Calculated Total Number 100 Conformers Submitted Total Number 20 Representative Model 1 (fewest violations)
Computation: NMR Software # Classification Version Software Name Author 1 chemical shift assignment NMRFAM-SPARKY 1.47 National Magnetic
Resonance Facility At Madison 2 structure calculation Amber Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, and Kollman 4 collection TopSpin Bruker Biospin