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Structure of a (3+1) G-quadruplex formed by hTERT promoter sequence
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H NOESY 0.5-2.0 mM DNA-2 100% D2O 90mM K+ 7 ambient 298 2 2D 1H-1H JR NOESY 0.5-2.0 mM DNA-1 90% H2O/10% D2O 90mM K+ 7 ambient 298 3 2D 1H-1H COSY 0.5-2.0 mM DNA-2 100% D2O 90mM K+ 7 ambient 298 4 2D 1H-1H TOCSY 0.5-2.0 mM DNA-2 100% D2O 90mM K+ 7 ambient 298 5 2D 1H-13C HSQC 0.5-2.0 mM DNA-2 100% D2O 90mM K+ 7 ambient 298 6 2D 1H-13C JR HMBC 0.5-2.0 mM DNA-1 90% H2O/10% D2O 90mM K+ 7 ambient 298 7 H-D EXCHANGE 0.5-2.0 mM DNA-2 100% D2O 90mM K+ 7 ambient 298 8 15N-FILTERED 0.5-2.0 mM [U-2% 15N] DNA-3 90% H2O/10% D2O 90mM K+ 7 ambient 298 9 D-LABELED 0.5-2.0 mM [U-100% 2H] DNA-4 90% H2O/10% D2O 90mM K+ 7 ambient 298
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 600 2 Bruker AVANCE 700
NMR Refinement Method Details Software DGSA-distance geometry simulated annealing, distance-restrained molecular dynamics TopSpin
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 processing TopSpin 2.1 Bruker Biospin 2 peak picking Felix 2007 Felix NMR, Inc. 3 structure solution X-PLOR NIH 2.24 Schwieters, Kuszewski, Tjandra and Clore 4 refinement X-PLOR NIH 2.24 Schwieters, Kuszewski, Tjandra and Clore