Solution structure of the C-terminal PABC domain of human poly(A)-binding protein in complex with the peptide from Paip1
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 3D_15N-separated_NOESY | 3mM 15N-labeled PABC; 3mM 15N-labeled peptide; 50mM phosphate buffer; 0.1M NaCl; 1mM NaN3; pH 6.3 | 90% H2O/10% D2O | 0.1M NaCl | 6.3 | ambient | 303 | |
| 2 | 2D NOESY | 3mM unlabeled PABC; 3mM unlabeled peptide; 50mM phosphate buffer; 0.1M NaCl; 1mM NaN3; pH 6.3 | 90% H2O/10% D2O | 0.1M NaCl | 6.3 | ambient | 303 | |
| 3 | 2D NOESY | 3mM unlabeled PABC; 3mM unlabeled peptide; 50mM phosphate buffer; 0.1M NaCl; 1mM NaN3; pH 6.3 | 100% D2O | 0.1M NaCl | 6.3 | ambient | 303 | |
| 4 | HNHA | 3mM unlabeled PABC; 3mM N15-labeled peptide; 50mM phosphate buffer; 0.1M NaCl; 1mM NaN3; pH 6.3 | 90% H2O/10% D2O | 0.1M NaCl | 6.3 | ambient | 303 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | DRX | 500 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | The structures are based on 1214 non-redundant NOE-derived distance constraints, 103 dihedral angle restraints, and 40 hydrogen bonds. | XwinNMR |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 30 |
| Representative Model | 1 (lowest energy) |
| Additional NMR Experimental Information | |
|---|---|
| Details | This structure was determined using standard triple-resonance and homonuclear techniques. |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | collection | XwinNMR | 2.1 | Bruker Spectrospin |
| 2 | processing | Gifa | 4.31 | Delsuc |
| 3 | data analysis | XEASY | 1.3.13 | Wuthrich |
| 4 | structure solution | ARIA | 0.9 | Nilges |
| 5 | refinement | CNS | 0.9 | Brunger |
