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Structure of the AAGU tetraloop
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 1mM RNA, 10mM phosphate buffer pH 6.4, 90% H2O, 10% D2O 90% H2O/10% D2O 10mM sodium phosphate 6.4 ambient 288 2 2D NOESY 1mM RNA; 10mM phosphate buffer pH 6.4 100% D2O 10mM sodium phosphate 6.4 ambient 303 3 2D TOCSY 1mM RNA; 10mM phosphate buffer pH 6.4 100% D2O 10mM sodium phosphate 6.4 ambient 303 4 DQF-COSY 1mM RNA; 10mM phosphate buffer pH 6.4 100% D2O 10mM sodium phosphate 6.4 ambient 303 5 2D HMQC 1mM RNA A-15N,13C; 10mM phosphate buffer pH 6.4 100% D2O 10mM sodium phosphate 6.4 ambient 303 6 3D HCCH-TOCSY 1mM RNA A-15N,13C; 10mM phosphate buffer pH 6.4 100% D2O 10mM sodium phosphate 6.4 ambient 303
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker DRX 800 2 Bruker DRX 600 3 Varian INOVA 500
NMR Refinement Method Details Software simulated annealing XwinNMR
NMR Ensemble Information Conformer Selection Criteria structures with the lowest energy Conformers Calculated Total Number 100 Conformers Submitted Total Number 20 Representative Model 1 (lowest energy)
Computation: NMR Software # Classification Version Software Name Author 1 collection XwinNMR 3.1 2 data analysis Gifa 4.0 M.A. DELSUC 3 data analysis Sparky 3.110 4 structure solution CNS 1.1 BRUNGER A 5 refinement CNS 1.1 BRUNGER A