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Double-ion dependent DNA quadruplex structure formed by C.elegans telomeric sequence
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H NOESY 0.5 mM / DNA (5'-D(*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*C)-3') 90% H2O/10% D2O 145 mM 7.5 1 atm 298 Bruker AVANCE NEO 950 2 2D 1H-1H NOESY 0.5 mM / DNA (5'-D(*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*C)-3') 100% D2O 145 mM 7.5 1 atm 298 Bruker AVANCE NEO 950 3 2D 1H-1H TOCSY 0.5 mM / DNA (5'-D(*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*C)-3') 90% H2O/10% D2O 145 mM 7.5 1 atm 298 Bruker AVANCE NEO 850 4 2D 1H-1H TOCSY 0.5 mM / DNA (5'-D(*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*C)-3') 100% D2O 145 mM 7.5 1 atm 298 Bruker AVANCE NEO 850 5 2D 1H-13C HSQC aromatic 0.5 mM / DNA (5'-D(*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*CP*TP*TP*AP*GP*GP*C)-3') 100% D2O 145 mM 7.5 1 atm 298 Bruker AVANCE NEO 850
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE NEO 950 2 Bruker AVANCE NEO 850
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 chemical shift assignment NMRFAM-SPARKY Lee, Tonelli, Markley 2 structure calculation Amber Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman 3 refinement Amber Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman