2QH3
Solution structure of the U64 H/ACA snoRNA 3' terminal hairpin loop
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D NOESY (11echo and watergate) | 1 mM unlabeled RNA, 10 mM sodium phosphate buffer, pH 6.3, 200 mM KCl, 50 uM EDTA, 0.2% sodium azide; 95% H2O, 5% D2O or 100% D2O | 95% H2O, 5% D2O or 100% D2O | 200 mM KCl | 6.3 | ambient | 283 | |
2 | 2D NOESY, 2D TOCSY, Natural abundance 2D 13C HSQC | 1 mM unlabeled RNA, 10 mM sodium phosphate buffer, pH 6.3, 200 mM KCl, 50 uM EDTA, 0.2% sodium azide; 95% H2O, 5% D2O or 100% D2O | 95% H2O, 5% D2O or 100% D2O | 200 mM KCl | 6.3 | ambient | 293 | |
3 | 2D 15N-HMQC, 2D 15N-CPMG-NOESY, 2D JNN-HNN-COSY | 1 mM 13C, 15N labeled RNA, 10 mM sodium phosphate buffer, pH 6.3, 200 mM KCl, 50 uM EDTA, 0.2% sodium azide; 95% H2O, 5% D2O or 100% D2O | 95% H2O, 5% D2O or 100% D2O | 200 mM KCl | 6.3 | ambient | 283 | |
4 | 2D 13C-HSQC, 2D HCCH-COCSY, 3D HCCH-TOCSY, 3D NOESY-HMQC, 2D 31P spin echo difference HCCH/HSQC/HMQC, 2D CT-CE-HSQC | 1 mM 13C, 15N labeled RNA, 10 mM sodium phosphate buffer, pH 6.3, 200 mM KCl, 50 uM EDTA, 0.2% sodium azide; 95% H2O, 5% D2O or 100% D2O | 95% H2O, 5% D2O or 100% D2O | 200 mM KCl | 6.3 | ambient | 293 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | DRX | 500 |
2 | Bruker | DRX | 600 |
3 | Bruker | AVANCE | 800 |
NMR Refinement | ||
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Method | Details | Software |
simulated annealing | Structures are based on 497 NOE-derived distance contraints, 83 dihedral angle restraints, 23 distance restraints from hydrogen bonds, and 16 H-C residual dipolar couplings | XwinNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with the lowest energy, no restraint violation, consistent with residual dipolar couplings |
Conformers Calculated Total Number | 200 |
Conformers Submitted Total Number | 20 |
Representative Model | 1 (lowest energy) |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | collection | XwinNMR | 2.6 | Bruker |
2 | processing | XwinNMR | 2.6 | Bruker |
3 | data analysis | AURELIA | 3.108 | Brunger |
4 | structure solution | X-PLOR | 3.851 | NIH |
5 | refinement | X-PLOR | 3.851 | NIH |