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Guanine-rich oligonucleotide with 5'- and 3'-GC ends form G-quadruplex with A(GGGG)A hexad, GCGC- and G-quartets and two symmetric GG and AA base pair
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 1 mM GCnCG, 175 mM sodium chloride, 10 mM sodium phosphate buffer 90% H2O/10% D2O 175 mM 6.8 1 atm 298 Agilent Agilent Technologies VNMRS 800 MHz NMR spectrometer 800 2 2D NOESY 1 mM GCnCG, 175 mM sodium chloride, 10 mM sodium phosphate buffer 90% H2O/10% D2O 175 mM 6.8 1 atm 298 Agilent Agilent Technologies DD2 600 MHz NMR spectrometer 600 3 2D NOESY 1 mM GCnCG, 175 mM sodium chloride, 10 mM sodium phosphate buffer 100% D2O 175 mM 6.8 1 atm 298 Agilent Agilent Technologies VNMRS 800 MHz NMR spectrometer 800 4 2D NOESY 1 mM GCnCG, 175 mM sodium chloride, 10 mM sodium phosphate buffer 100% D2O 175 mM 6.8 1 atm 298 Agilent Agilent Technologies DD2 600 MHz NMR spectrometer 600 5 2D TOCSY 1 mM GCnCG, 175 mM sodium chloride, 10 mM sodium phosphate buffer 100% D2O 175 mM 6.8 1 atm 298 Agilent Agilent Technologies DD2 600 MHz NMR spectrometer 600 6 2D DQF-COSY 1 mM GCnCG, 175 mM sodium chloride, 10 mM sodium phosphate buffer 90% H2O/10% D2O 175 mM 6.8 1 atm 298 Agilent Agilent Technologies DD2 600 MHz NMR spectrometer 600 7 2D 1H-31P COSY 1 mM GCnCG, 175 mM sodium chloride, 10 mM sodium phosphate buffer 100% D2O 175 mM 6.8 1 atm 298 Agilent Agilent Technologies DD2 600 MHz NMR spectrometer 600 8 2D 1H-13C HSQC aromatic 1 mM 8% 13C, 8% 15N GCnCG, 175 mM sodium chloride, 10 mM sodium phosphate buffer 90% H2O/10% D2O 175 mM 6.8 1 atm 298 Agilent Agilent Technologies DD2 600 MHz NMR spectrometer 600
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Agilent Agilent Technologies VNMRS 800 MHz NMR spectrometer 800 2 Agilent Agilent Technologies DD2 600 MHz NMR spectrometer 600
NMR Refinement Method Details Software simulated annealing Amber
NMR Ensemble Information Conformer Selection Criteria structures with the least restraint violations Conformers Calculated Total Number 200 Conformers Submitted Total Number 10 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 collection VNMR Varian 2 processing VNMR Varian 3 chemical shift assignment VNMR Varian 4 peak picking Sparky Goddard 5 structure calculation Amber 14 Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman 6 refinement Amber 14 Case, Darden, Cheatham III, Simmerling, Wang, Duke, Luo, ... and Kollman