1NA2
Solution structure of the p2b hairpin from human telomerase RNA
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D NOESY | 1mM human telomerase RNA p2b hairpin U-15N,13C labeled, unlabeled. | 100% D2O, 200mM KCl, 0.2% NaN3, 50uM EDTA, 10mM Na phosphate, pH=6.3 | 200 mM KCl | 6.3 | 1 atm | 293 | |
2 | DQF-COSY | 1mM human telomerase RNA p2b hairpin U-15N,13C labeled, unlabeled. | 100% D2O, 200mM KCl, 0.2% NaN3, 50uM EDTA, 10mM Na phosphate, pH=6.3 | 200 mM KCl | 6.3 | 1 atm | 293 | |
3 | 3D_13C-separated_NOESY | 1mM human telomerase RNA p2b hairpin U-15N,13C labeled, unlabeled. | 100% D2O, 200mM KCl, 0.2% NaN3, 50uM EDTA, 10mM Na phosphate, pH=6.3 | 200 mM KCl | 6.3 | 1 atm | 293 | |
4 | 3D 13C NOESY-HMQC | 1mM human telomerase RNA p2b hairpin U-15N,13C labeled, unlabeled. | 100% D2O, 200mM KCl, 0.2% NaN3, 50uM EDTA, 10mM Na phosphate, pH=6.3 | 200 mM KCl | 6.3 | 1 atm | 293 | |
5 | 2D NOESY | 1mM human telomerase RNA p2b hairpin U-15N,13C labeled, unlabeled. | 95% H2O, 5% D2O, 200mM KCl, 0.2% NaN3, 50uM EDTA, 10mM Na phosphate, pH=6.3 | 200 mM KCl | 6.3 | 1 atm | 278 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | DRX | 600 |
2 | Bruker | DRX | 500 |
NMR Refinement | ||
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Method | Details | Software |
simulated annealing | 266 intranucleotide NOEs, 318 internucleotide NOEs, 117 dihedral angles, 29 hydrogen bonds, 24 RDCs | XwinNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | structures with acceptable covalent geometry,structures with the least restraint violations,structures with the lowest energy |
Conformers Calculated Total Number | 200 |
Conformers Submitted Total Number | 18 |
Representative Model | 1 (fewest violations,lowest energy) |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | processing | XwinNMR | 2.6 | Bruker |
2 | data analysis | AURELIA | 3.108 | Bruker |
3 | structure solution | X-PLOR | 3.851 | Brunger |
4 | refinement | X-PLOR | 3.851 | Brunger |