1YBL
NMR structure of the i-motif tetramer of d(AACCCC)
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D NOESY | pH 4.5 to 6 | H2O/D2O solution | no added salt | 4.5 | ambient | 273 | |
| 2 | 2D TOCSY | |||||||
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Varian | INOVA | 500 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | 96 NOE-derived distances constraints and 12 distance restraints for hydrogen bonds derived from proton exchange measurements | X-PLOR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | back calculated data agree with experimental NOESY spectrum |
| Conformers Calculated Total Number | 10 |
| Conformers Submitted Total Number | 1 |
| Representative Model | 1 (fewest violations) |
| Additional NMR Experimental Information | |
|---|---|
| Details | This structure was determined using standard 2D homonuclear techniques |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | structure solution | X-PLOR | 3.851 | Brunger A.T. |
| 2 | refinement | X-PLOR | 3.851 | Brunger A.T. |
