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Solution structure for the 1:1 complex of a platinum(II)-based tripod bound to a hybrid-1 human telomeric G-quadruplex
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H NOESY 1.0 mM G-quadruplex DNA (26-MER), 1.0 mM Pt-tripod, 70 mM potassium chloride, 25 mM potassium phosphate 90% H2O/10% D2O 95 mM 7.0 AMBIENT MBAR mbar 298 Bruker AVIII 700 2 2D 1H-1H TOCSY 1.0 mM G-quadruplex DNA (26-MER), 1.0 mM Pt-tripod, 70 mM potassium chloride, 25 mM potassium phosphate 90% H2O/10% D2O 95 mM 7.0 AMBIENT MBAR mbar 298 Bruker AVIII 700 3 2D 1H-1H COSY 1.0 mM G-quadruplex DNA (26-MER), 1.0 mM Pt-tripod, 70 mM potassium chloride, 25 mM potassium phosphate 90% H2O/10% D2O 95 mM 7.0 AMBIENT MBAR mbar 298 Bruker AVIII 700 4 2D 1H-1H NOESY 1.0 mM G-quadruplex DNA (26-MER), 1.0 mM Pt-tripod, 70 mM potassium chloride, 25 mM potassium phosphate 90% H2O/10% D2O 95 mM 7.0 AMBIENT MBAR mbar 288 Bruker AVIII 600 5 2D 1H-1H TOCSY 1.0 mM G-quadruplex DNA (26-MER), 1.0 mM Pt-tripod, 70 mM potassium chloride, 25 mM potassium phosphate 90% H2O/10% D2O 95 mM 7.0 AMBIENT MBAR mbar 288 Bruker AVIII 600 6 2D 1H-1H COSY 1.0 mM G-quadruplex DNA (26-MER), 1.0 mM Pt-tripod, 70 mM potassium chloride, 25 mM potassium phosphate 90% H2O/10% D2O 95 mM 7.0 AMBIENT MBAR mbar 288 Bruker AVIII 600
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVIII 600 2 Bruker AVIII 700
NMR Refinement Method Details Software simulated annealing Sparky DGSA-distance geometry simulated annealing X-PLOR molecular dynamics Discover
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 Bruker Biospin 2 chemical shift assignment Sparky Goddard 3 structure calculation X-PLOR Brunger 4 peak picking Sparky Goddard 5 refinement X-PLOR Brunger 6 refinement Discover Accelrys Software Inc.