THE SOLUTION STRUCTURE OF A WELL-FOLDED PEPTIDE BASED ON THE 31-RESIDUE AMINO-TERMINAL SUBDOMAIN OF HUMAN GRANULIN A
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D NOESY | 0.5 mM HGA 1-31 (D1V, K3H, S9I, Q20P); 20 mM sodium acetate-d3 | 10% D2O, 90% H2O | 5.0 | ambient | 288 | ||
| 2 | 2D NOESY | 0.5 mM HGA 1-31 (D1V, K3H, S9I, Q20P); 20 mM sodium acetate-d3 | 10% D2O, 90% H2O | 5.0 | ambient | 298 | ||
| 3 | 2D NOESY | 0.5 mM HGA 1-31 (D1V, K3H, S9I, Q20P); 20 mM sodium acetate-d3 | 100% D2O | 5.0 | ambient | 288 | ||
| 4 | 2D NOESY | 0.5 mM HGA 1-31 (D1V, K3H, S9I, Q20P); 20 mM sodium acetate-d3 | 100% D2O | 5.0 | ambient | 298 | ||
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AVANCE | 500 |
| 2 | Bruker | DRX | 500 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| distance geometry and simulated annealing | The structures are based on a total of 241 restraints, 174 are unambiguous NOE-derived distance constraints, 47 ambiguous NOE-derived distance constraints, 8 dihedral angle restraints, 10 distance restraints from hydrogen bonds, 2 distance restraints from disulfide bonds. | X-PLOR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the least restraint violations |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 10 |
| Additional NMR Experimental Information | |
|---|---|
| Details | This structure was determined using standard 2D homonuclear techniques |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | refinement | X-PLOR | 3.1 | Brunger |
| 2 | structure solution | X-PLOR | 3.1 | Brunger |
