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Specific phosphorothioate substitution within domain 6 of a group II intron ribozyme leads to changes in local structure and metal ion binding
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D 1H-1H NOESY 2 mM alpha-thio-D6-27 100% D2O 50 mM 6.7 1 atm 303 Bruker AVANCE 600 2 2D 1H-1H TOCSY 2 mM alpha-thio-D6-27 100% D2O 50 mM 6.7 1 atm 303 Bruker AVANCE 600 3 2D 1H-13C HSQC aliphatic 2 mM alpha-thio-D6-27 100% D2O 50 mM 6.7 1 atm 303 Bruker AVANCE 600 4 2D 1H-13C HSQC aromatic 2 mM alpha-thio-D6-27 100% D2O 50 mM 6.7 1 atm 303 Bruker AVANCE 600 5 2D 1H-1H NOESY 0.7 mM na alpha-thio-D6-27 90% H2O/10% D2O 50 mM 6.7 1 atm 275 Bruker AVANCE 600
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker AVANCE 600
NMR Refinement Method Details Software simulated annealing Xplor-NIH
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 200 Conformers Submitted Total Number 20 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 refinement Xplor-NIH Schwieters, Kuszewski, Tjandra and Clore 2 structure calculation Xplor-NIH Schwieters, Kuszewski, Tjandra and Clore 3 chemical shift assignment Sparky Goddard 4 peak picking Sparky Goddard