Differences and Similarities in Solution Structures of Angiotensin I & II: Implication for Structure-Function Relationship
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | DQF-COSY | 2.5 mM; DMSO-d6 | DMSO-d6 | ambient | 298 | |||
| 2 | 2D TOCSY | 2.5 mM; DMSO-d6 | DMSO-d6 | ambient | 298 | |||
| 3 | 2D NOESY | 2.5 mM; DMSO-d6 | DMSO-d6 | ambient | 298 | |||
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | DPX | 400 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing, torsion angle dynamics | This structure is based on a 225 NOE-derived distance constraints, 7 dihedral angle restraints, 1 distance restraint from hydrogen bond | XwinNMR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | target function for models 1-20, mean energy minimized for model 21 |
| Conformers Calculated Total Number | 300 |
| Conformers Submitted Total Number | 21 |
| Representative Model | 21 (n/a) |
| Additional NMR Experimental Information | |
|---|---|
| Details | This structure was determined using standard 2D homonuclear techniques. Models 1-20 are the family ensemble, while model 21 is the minimized average structure derived from that ensemble. |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | XwinNMR | 2.6 | |
| 2 | processing | XwinNMR | 2.6 | |
| 3 | data analysis | XEASY | 1.3 | Tai-he Xia, Christian Bartels, Kurt Wuthtrich |
| 4 | structure solution | DYANA | 1.5 | Peter Guntert, Christian Mumenthaler, Kurt Wuthrich |
| 5 | refinement | Amber | 5.0 | KOLLMAN, CASE, MERZ, CHEATHAM, SIMMERLING, DARDEN, PEARLMAN |
