STRUCTURE OF SYNTHETIC 26-MER PEPTIDE CONTAINING 145-169 SHEEP PRION PROTEIN SEGMENT AND C-TERMINAL CYSTEINE IN TFE SOLUTION
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D NOESY | 4.5mM | 87/13 (v/v), CF3CD2OH / 10mM sodium phosphate buffer, pH 6.5 | 1mM | 6.5 | 1 atm | 278 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AMX | 500 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing using torsion angle dynamics as implemented in the program CNS | the structures are based on a total of 252 interresidual NOE-derived distance constraints, 22 dihedral angle restraints, 25 CSI restraints from Ha, Ca, Cb. | XwinNMR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | back calculated data agree with experimental NOESY spectrum,structures with the lowest energy |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 20 |
| Representative Model | 2 (lowest energy, without noe violations) |
| Additional NMR Experimental Information | |
|---|---|
| Details | This structure was determined using standard 2D homonuclear techniques. |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | XwinNMR | 2.1 | Bruker |
| 2 | refinement | CNS | 0.9 | Brunger |
| 3 | structure solution | CNS | 0.9 | Brunger |
