2LUJ
Solution structure of a parallel-stranded oligoisoguanine DNA pentaplex formed by d(T(iG)4T) in the presence of Cs ions
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D 1H-1H NOESY | 0.7 mM DNA (5'-D(*TP*(IGU)P*(IGU)P*(IGU)P*(IGU)P*T)-3') | 90% H2O/10% D2O | 50 | 6.3 | ambient | 300 | |
| 2 | 2D 1H-1H NOESY | 0.7 mM DNA (5'-D(*TP*(IGU)P*(IGU)P*(IGU)P*(IGU)P*T)-3') | 100% D2O | 50 | 6.3 | ambient | 300 | |
| 3 | 2D 1H-1H TOCSY | 0.7 mM DNA (5'-D(*TP*(IGU)P*(IGU)P*(IGU)P*(IGU)P*T)-3') | 100% D2O | 50 | 6.3 | ambient | 300 | |
| 4 | 2D DQF-COSY | 0.7 mM DNA (5'-D(*TP*(IGU)P*(IGU)P*(IGU)P*(IGU)P*T)-3') | 100% D2O | 50 | 6.3 | ambient | 300 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | DRX | 500 |
| 2 | Bruker | DRX | 600 |
| 3 | Bruker | Avance | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | TOPSPIN | |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 16 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | TOPSPIN | Bruker Biospin | |
| 2 | chemical shift assignment | SPARKY | Goddard | |
| 3 | data analysis | SPARKY | Goddard | |
| 4 | peak picking | SPARKY | Goddard | |
| 5 | processing | xwinnmr | Bruker Biospin | |
| 6 | structure solution | X-PLOR_NIH | Schwieters, Kuszewski, Tjandra and Clore | |
| 7 | refinement | X-PLOR_NIH | Schwieters, Kuszewski, Tjandra and Clore | |
