Solution structure of Pi6, a low affinity blocking kappa-K+-channel peptide from the scorpion Pandinus imperator
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D 1H-1H TOCSY | 0.19 mM pi6 | 90% H2O/10% D2O | 0 mM | 4 | 1 atm | 298.15 | Bruker AVANCE NEO 800 |
| 2 | 2D 1H-1H COSY | 0.19 mM pi6 | 90% H2O/10% D2O | 0 mM | 4 | 1 atm | 298.15 | Bruker AVANCE NEO 800 |
| 3 | 2D 1H-1H NOESY | 0.19 mM pi6 | 90% H2O/10% D2O | 0 mM | 4 | 1 atm | 298.15 | Bruker AVANCE NEO 800 |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AVANCE NEO | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| torsion angle dynamics | The structure ensemble is based on a total of 332 restraints, of which 309 are NOE derived distance restraints, 11 are hydrogen bonds and 12 are phi angle dihedral restraints | CNS |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 10 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | structure calculation | CNS | Brunger, Adams, Clore, Gros, Nilges and Read | |
| 2 | structure calculation | ARIA | Linge, O'Donoghue and Nilges | |
| 3 | chemical shift assignment | CcpNmr Analysis | 2.4.2 | CCPN |
| 4 | peak picking | CcpNmr Analysis | 2.4.2 | CCPN |
| 5 | collection | TopSpin | 4.1 | Bruker Biospin |
