1DW4
NMR STRUCTURE OF OMEGA-CONOTOXIN MVIIA: CONSTRAINTS ON DISULPHIDE BRIDGES
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D NOESY | 1 | H2O (10% D2O) | 0 | 3.5 | ambient | 283 | |
| 2 | 2D COSY | 1 | H2O (10% D2O) | 0 | 3.5 | ambient | 283 | |
| 3 | 2D HOHAHA | 1 | H2O (10% D2O) | 0 | 3.5 | ambient | 283 | |
| 4 | 2D 13C-1H HSQC | 1 | H2O (10% D2O) | 0 | 3.5 | ambient | 283 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AMX | 500 |
| 2 | Bruker | DRX | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | substructure embedding by distance geometry, simulated annealing regularisation of full structure, simulated annealing refinement | XwinNMR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 500 |
| Conformers Submitted Total Number | 32 |
| Representative Model | 1 (lowest energy) |
| Additional NMR Experimental Information | |
|---|---|
| Details | temperature dependence of chemcial shifts, NH exchange into D2O, relaxation measurements at 500 and 600 MHz |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | XwinNMR | 1.2 | Bruker |
| 2 | processing | Felix | 2.10 | D. Hare |
| 3 | structure solution | X-PLOR | 3.1 | A. Bruenger |
| 4 | refinement | X-PLOR | 3.1 | A. Bruenger |
