The Solution NMR Structure and Dynamics of a Recombinant Onconase with Altered N-terminal and Met23 residues
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | HNHA | 1.5 mM (M-1, Q1, M23L)rONC [U-15N; U-13C] | 50mM phosphate buffer pH4.1, 90% H2O, 10% D2O | 0.3 | 4.1 | ambient | 310 | |
| 2 | 3D_15N-separated_NOESY | 1.5 mM (M-1, Q1, M23L)rONC [U-15N; U-13C] | 50mM phosphate buffer pH4.1, 90% H2O, 10% D2O | 0.3 | 4.1 | ambient | 310 | |
| 3 | 3D_13C-separated_NOESY | 1.5 mM (M-1, Q1, M23L)rONC [U-15N; U-13C] | 50mM phosphate buffer pH4.1, 90% H2O, 10% D2O | 0.3 | 4.1 | ambient | 310 | |
| 4 | 2D TOCSY | 1.5 mM (M-1, Q1, M23L)rONC [U-15N; U-13C] | 50mM phosphate buffer pH4.1, 90% H2O, 10% D2O | 0.3 | 4.1 | ambient | 310 | |
| 5 | 2D NOESY | 1.5 mM (M-1, Q1, M23L)rONC [U-15N; U-13C] | 50mM phosphate buffer pH4.1, 90% H2O, 10% D2O | 0.3 | 4.1 | ambient | 310 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | DRX | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing, matrix relaxation, torsion angle dymanics | the structures are based on a total of 1802 restraints, 1550 are NOE-derived distance constraints, 4 disulfide bonds, 150 dihedral angle restraints, 98 distance restraints from hydrogen bonds. | ARIA |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 100 |
| Conformers Submitted Total Number | 20 |
| Representative Model | 1 (minimized average structure) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | structure solution | ARIA | 1.2 | Nilges |
| 2 | structure solution | CNS | 1.1 | Brunger |
| 3 | refinement | CNS | 1.1 | Brunger |
