2KF7

Structure of a two-G-tetrad basket-type intramolecular G-quadruplex formed by human telomeric repeats in K+ solution (with G7-to-BRG substitution)


SOLUTION NMR
NMR Experiment
ExperimentTypeSample ContentsSolventIonic StrengthpHPressureTemperature (K)Spectrometer
12D 1H-13C HSQC0.5-2.5mM DNA (5'-D(*DGP*DGP*DGP*DTP*DTP*DAP*(BGM)P*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DT)-3')-4, 70mM potassium chloride-5, 20mM potassium phosphate-6100% D2O7298
22D 1H-1H TOCSY0.5-2.5mM DNA (5'-D(*DGP*DGP*DGP*DTP*DTP*DAP*(BGM)P*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DT)-3')-4, 70mM potassium chloride-5, 20mM potassium phosphate-6100% D2O7298
32D 1H-1H COSY0.5-2.5mM DNA (5'-D(*DGP*DGP*DGP*DTP*DTP*DAP*(BGM)P*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DT)-3')-4, 70mM potassium chloride-5, 20mM potassium phosphate-6100% D2O7298
42D 1H-1H NOESY0.5-2.5mM DNA (5'-D(*DGP*DGP*DGP*DTP*DTP*DAP*(BGM)P*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DT)-3')-1, 70mM potassium chloride-2, 20mM potassium phosphate-390% H2O/10% D2O7298
52D 1H-1H NOESY0.5-2.5mM DNA (5'-D(*DGP*DGP*DGP*DTP*DTP*DAP*(BGM)P*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DT)-3')-4, 70mM potassium chloride-5, 20mM potassium phosphate-6100% D2O7298
62D 1H-1H NOESY0.5-2.5mM DNA (5'-D(*DGP*DGP*DGP*DTP*DTP*DAP*(BGM)P*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DT)-3')-4, 70mM potassium chloride-5, 20mM potassium phosphate-6100% D2O5283
72D 1H-15N HSQC0.5-2.5mM DNA (5'-D(*DGP*DGP*DGP*DTP*DTP*DAP*(BGM)P*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DTP*DTP*DAP*DGP*DGP*DGP*DT)-3')-1, 70mM potassium chloride-2, 20mM potassium phosphate-390% H2O/10% D2O7298
NMR Spectrometer Information
SpectrometerManufacturerModelField Strength
1BrukerAVANCE600
2BrukerAVANCE700
3VarianINOVA600
NMR Refinement
MethodDetailsSoftware
matrix relaxation, molecular dynamics, DGSA-distance geometry simulated annealingFelix
NMR Ensemble Information
Conformer Selection Criteriaback calculated data agree with experimental NOESY spectrum
Conformers Calculated Total Number100
Conformers Submitted Total Number10
Representative Model1 (lowest energy)
Computation: NMR Software
#ClassificationVersionSoftware NameAuthor
1peak pickingFelix2007Felix NMR, Inc.
2processingTopSpinBruker Biospin
3structure solutionX-PLOR NIH2.21Schwieters, Kuszewski, Tjandra, Clore
4refinementX-PLOR NIH2.21Schwieters, Kuszewski, Tjandra, Clore