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Solution structure of a parallel-stranded oligoisoguanine DNA pentaplex formed by d(T(iG)4T) in the presence of Cs ions
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H NOESY 0.7 mM DNA (5'-D(*TP*(IGU)P*(IGU)P*(IGU)P*(IGU)P*T)-3') 90% H2O/10% D2O 50 6.3 ambient 300 2 2D 1H-1H NOESY 0.7 mM DNA (5'-D(*TP*(IGU)P*(IGU)P*(IGU)P*(IGU)P*T)-3') 100% D2O 50 6.3 ambient 300 3 2D 1H-1H TOCSY 0.7 mM DNA (5'-D(*TP*(IGU)P*(IGU)P*(IGU)P*(IGU)P*T)-3') 100% D2O 50 6.3 ambient 300 4 2D DQF-COSY 0.7 mM DNA (5'-D(*TP*(IGU)P*(IGU)P*(IGU)P*(IGU)P*T)-3') 100% D2O 50 6.3 ambient 300
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker DRX 500 2 Bruker DRX 600 3 Bruker AVANCE 800
NMR Refinement Method Details Software simulated annealing TopSpin
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 200 Conformers Submitted Total Number 16 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 collection TopSpin Bruker Biospin 2 chemical shift assignment Sparky Goddard 3 data analysis Sparky Goddard 4 peak picking Sparky Goddard 5 processing XwinNMR Bruker Biospin 6 structure solution X-PLOR NIH Schwieters, Kuszewski, Tjandra and Clore 7 refinement X-PLOR NIH Schwieters, Kuszewski, Tjandra and Clore