Confirmational analysis of the broad-spectrum antibacterial peptide, rantuerin-2csa: identification of a full length helix-turn-helix motif
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D 1H-1H TOCSY | 1.5-2.0 mM Peptide | 1:1 mixture of TFE-d3 and H2O | 3.2 | ambient | 298 | ||
| 2 | 2D 1H-1H NOESY | 1.5-2.0 mM Peptide | 1:1 mixture of TFE-d3 and H2O | 3.2 | ambient | 298 | ||
| 3 | 2D DQF-COSY | 1.5-2.0 mM Peptide | 1:1 mixture of TFE-d3 and H2O | 3.2 | ambient | 298 | ||
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | DRX | 500 |
| 2 | Bruker | DRX | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| torsion angle dynamics, simulated annealing, Conjugated gradient minimization, Powell minimization | XwinNMR | |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | target function |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 20 |
| Representative Model | 1 (fewest violations) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | XwinNMR | 3.5 | Bruker Biospin |
| 2 | processing | CYANA | 2.0 | Guntert, Mumenthaler and Wuthrich |
| 3 | refinement | SYBYL | 6.8.1 | Tripos |
