1I2U
NMR SOLUTION STRUCTURES OF ANTIFUNGAL HELIOMICIN
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D 1H DQF-COSY; TQF-COSY; TOCSY; NOESY | 4 mM heliomicin ; 40mM sodium acetate buffer | 90% H2O/10% D2O | 40mM sodium acetate buffer | 4.3 | ambient | 293 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AMX | 500 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| torsion angle dynamics (DYANA) and energy minimisation (XPLOR) | the structures are based on a total of 130 intra-residue, 163 sequential, 105 medium range, 198 long range NOE-derived distance restraints, 9 distances restraints corresponding to the 3 disulfide bridge, 85 dihedral angle restraints, and 14 distance restraints for hydrogen bonds | UXNMR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with acceptable covalent geometry, structures with favorable non-bond energy, structures with the least restraint violations, structures with the lowest energy, target function |
| Conformers Calculated Total Number | 40 |
| Conformers Submitted Total Number | 18 |
| Representative Model | 1 (lowest target function) |
| Additional NMR Experimental Information | |
|---|---|
| Details | This structure was determined using standard 2D homonuclear techniques. |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | UXNMR | ||
| 2 | data analysis | XEASY | Bartels | |
| 3 | refinement | DYANA | Guentert | |
| 4 | refinement | X-PLOR | Brunger | |
