Solution structure of the ribosome-associated cold shock response protein Yfia of Escherichia coli
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | HNHA | 0.8mM Yfia, U-15N-13C; 50mM phosphate buffer, 50mM LiCl | 90% H2O/10% D2O | 50mM LiCl, 50mM KH2PO4 | 6.5 | ambient | 300 | |
| 2 | 3D_15N-separated_NOESY | 0.5mM Yfia, U-15N; 50mM phosphate buffer, 50mM LiCl | 90% H2O/10% D2O | 50mM LiCl, 50mM KH2PO4 | 6.5 | ambient | 300 | |
| 3 | 3D_13C-separated_NOESY | 0.8mM Yfia, U-15N-13C; 50mM phosphate buffer, 50mM LiCl | 90% H2O/10% D2O | 50mM LiCl, 50mM KH2PO4 | 6.5 | ambient | 300 | |
| 4 | 2D NOESY | 0.8mM Yfia; 50mM phosphate buffer, 50mM LiCl | 90% H2O/10% D2O | 50mM LiCl, 50mM KH2PO4 | 6.5 | ambient | 300 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Varian | INOVA | 600 |
| 2 | Bruker | DRX | 500 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| Torsion angle dynamics and simulated annealing | XwinNMR | |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with acceptable covalent geometry, structures with the least restraint violations |
| Conformers Calculated Total Number | 50 |
| Conformers Submitted Total Number | 29 |
| Representative Model | 1 (lowest energy) |
| Additional NMR Experimental Information | |
|---|---|
| Details | Hydrogen bonds were extracted from a series of 15N-HSQC spectra recorded in D2O; Assignment was done using triple-resonance spectra |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | processing | XwinNMR | 3.2 | Bruker, Rheinstetten, Germany |
| 2 | data analysis | NDEE | 2.03 | SpinUp, Dortmund, Germany |
| 3 | collection | VNMR | 6.1B | Varian, Darmstadt, Germany |
| 4 | data analysis | AURELIA | 2.3 | Bruker, Rheinstetten, Germany |
| 5 | refinement | CNS | 1.0 | Axel Bruenger |














