2AXK
Solution structure of discrepin, a scorpion venom toxin blocking K+ channels.
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D NOESY | 3 mM discrepin 10% D2O | 90% H2O/10% D2O | 5 | 4 | ambient | 308 | |
| 2 | 2Q-COSY | 3 mM discrepin 100% D2O | 100% D2O | 5 | 4 | ambient | 308 | |
| 3 | 2D NOESY | 3 mM discrepin 10% D2O | 90% H2O/10% D2O | 5 | 4 | ambient | 308 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Varian | INOVA | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| torsion angle dynamics | structures based on total of 565 meaningful distance constraints, 22 dihedral angle constraints and three hydrogen bonds. Three disulfide bridges (8-29, 14-34, 18-36) were also included in caclulation. | VNMR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy and best secondary structure |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 10 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | VNMR | 6.1C | Varian Inc. |
| 2 | data analysis | XEASY | 3.1 | Bartels et al. |
| 3 | structure solution | ARIA | 1.2 | Nilges et al. |
| 4 | structure solution | CNS | 1.1 | Brunger |
| 5 | refinement | CNS | 1.1 | Brunger |
