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Chimeric hairpin with 2',5'-linked RNA loop and DNA stem
NMR Experiment Experiment Type Sample Contents Solvent Ionic Strength pH Pressure Temperature (K) Spectrometer 1 2D NOESY 1.5 mM hairpin D2O, H2O/D2O 7.0 1 atm 288 2 DQF-COSY 1.5 mM hairpin D2O, H2O/D2O 7.0 1 atm 288
NMR Spectrometer Information Spectrometer Manufacturer Model Field Strength 1 Bruker DRX 500
NMR Refinement Method Details Software simulated annealing Structures were refined by NMR-restrained molecular dynamics (12 ps, 300-1000 K) with final energy minimization X-PLOR
NMR Ensemble Information Conformer Selection Criteria structures with the least restraint violations,structures with the lowest energy Conformers Calculated Total Number 20 Conformers Submitted Total Number 10 Representative Model 1 (closest to the average, lowest energy)
Additional NMR Experimental Information Details Structure was determined using standard 2D homo- and heteronuclear techniques: 2D-NOESY, DQF-COSY, TOCSY, H,C-HMQC, H,P-HetCOSY
Computation: NMR Software # Classification Version Software Name Author 1 refinement X-PLOR 3.851 Brunger 2 data analysis X-PLOR Brunger