2K67

NMR solution structure of modified DNA containing imidazole nucleosides at acidic pH


SOLUTION NMR
NMR Experiment
ExperimentTypeSample ContentsSolventIonic StrengthpHPressureTemperature (K)Spectrometer
12D 1H-1H NOESY0.5 mM DIH DNA 17-mer, 120 mM sodium perchlorate100% D2O120 mM4.7ambient298
22D 1H-1H TOCSY0.5 mM DIH DNA 17-mer, 120 mM sodium perchlorate100% D2O120 mM4.7ambient298
32D 1H-13C HSQC0.5 mM DIH DNA 17-mer, 120 mM sodium perchlorate100% D2O120 mM4.7ambient298
42D 1H-1H NOESY0.5 mM DIH DNA 17-mer, 120 mM sodium perchlorate90% H2O/10% D2O120 mM4.7ambient278
NMR Spectrometer Information
SpectrometerManufacturerModelField Strength
1BrukerAVANCE700
NMR Refinement
MethodDetailsSoftware
torsion angle dynamics, simulated annealingTopSpin
NMR Ensemble Information
Conformer Selection Criteriastructures with the lowest energy
Conformers Calculated Total Number200
Conformers Submitted Total Number20
Representative Model1 (lowest energy)
Computation: NMR Software
#ClassificationVersionSoftware NameAuthor
1processingTopSpin1.3, 2.0, 2.1Bruker Biospin
2chemical shift assignmentSparky3.1Goddard
3data analysisSparky3.1Goddard
4peak pickingSparky3.1Goddard
5structure solutionDYANA1.5Guntert, Braun and Wuthrich
6refinementX-PLOR NIH2.15Schwieters, Kuszewski, Tjandra and Clore