1S9L
NMR Solution Structure of a Parallel LNA Quadruplex
SOLUTION NMR
NMR Experiment | ||||||||
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Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
1 | 2D NOESY | 1.80 mM, 5'-((TLN)P*(LCG)P*(LCG)P*(LCG)P*(TLN))-3', 10 mM KH2PO4, 70 mM KCl, 0.2 mM EDTA | H2O/D2O 9:1 | 7.0 | ambient | 300 | ||
2 | 2D NOESY | 1.80 mM, 5'-((TLN)P*(LCG)P*(LCG)P*(LCG)P*(TLN))-3', 10 mM KH2PO4, 70 mM KCl, 0.2 mM EDTA | D2O | 7.0 | ambient | 300 | ||
3 | 2D TOCSY | 1.80 mM, 5'-((TLN)P*(LCG)P*(LCG)P*(LCG)P*(TLN))-3', 10 mM KH2PO4, 70 mM KCl, 0.2 mM EDTA | D2O | 7.0 | ambient | 300 | ||
4 | 1H-31P 2D COSY | 1.80 mM, 5'-((TLN)P*(LCG)P*(LCG)P*(LCG)P*(TLN))-3', 10 mM KH2PO4, 70 mM KCl, 0.2 mM EDTA | D2O | 7.0 | ambient | 300 |
NMR Spectrometer Information | |||
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Spectrometer | Manufacturer | Model | Field Strength |
1 | Bruker | AMX | 500 |
2 | Varian | INOVA | 750 |
3 | Varian | INOVA | 600 |
NMR Refinement | ||
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Method | Details | Software |
torsion angle dynamics | 292 (73 per strand) NOE-derived distance constraints, 48 hydrogen bonds constraints, 36 (9 per strand) dihedral angle restraints. The 20 structures with the lowest CYANA target functions were subjected energy minimization (with no angle constraints) using the conjugate gradient method and the CVFF force field | UXNMR |
NMR Ensemble Information | |
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Conformer Selection Criteria | target function |
Conformers Calculated Total Number | 20 |
Conformers Submitted Total Number | 20 |
Representative Model | 1 (lowest energy) |
Additional NMR Experimental Information | |
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Details | This structure was determined using standard 2D homonuclear techniques |
Computation: NMR Software | ||||
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# | Classification | Version | Software Name | Author |
1 | collection | UXNMR | 970101 | Bruker |
2 | collection | VNMR | 6.1/C | Varian |
3 | processing | Felix | 98 | Accelrys |
4 | structure solution | CYANA | 1.0.6 | Guentert |
5 | refinement | Discover | 98 | Accelrys |