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Intramolecular higher-order packing of parallel quadruplexes comprising a G:G:G:G tetrad and a G(:A):G(:A):G(:A):G heptad of GGA triplet repeat DNA
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 1mM DNA; 10mM sodium phosphate buffer; 30mM KCl 95% H2O/5% D2O 6.5 ambient 275 2 2D NOESY 1mM DNA; 10mM sodium phosphate buffer; 30mM KCl 100% D2O 6.5 ambient 298 3 2D TOCSY 1mM DNA; 10mM sodium phosphate buffer; 30mM KCl 100% D2O 6.5 ambient 298 4 DQF-COSY 1mM DNA; 10mM sodium phosphate buffer; 30mM KCl 100% D2O 6.5 ambient 298
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker DRX 800 2 Bruker DRX 600
NMR Refinement Method Details Software simulated annealing X-PLOR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 100 Conformers Submitted Total Number 20 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 structure solution X-PLOR 3.851 Brunger 2 refinement X-PLOR 3.851