Ensemble solution structure of the phosphoenolpyruvate-Enzyme I complex from the bacterial phosphotransferase system
SOLUTION NMR - SOLUTION SCATTERING
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | ARTSY | 0.4 mM [U-13C; U-15N; U-2H] EIA, 20 mM TRIS, 1 mM EDTA, 100 mM sodium chloride, 2 mM DTT | 90% H2O/10% D2O | 0.1 | 7.4 | ambient | 310 | |
| 2 | 2D 1H-15N HSQC | 0.4 mM [U-13C; U-15N; U-2H] EIA, 20 mM TRIS, 1 mM EDTA, 100 mM sodium chloride, 2 mM DTT | 90% H2O/10% D2O | 0.1 | 7.4 | ambient | 310 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AVANCE | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | The deposited structures represent two-membered ensembles with varying weights which must be considered together to properly reproduce the RDC and SAXS data. The first members of 10 ensembles are reported in models 1-10 which were allowed rigid-body motion of subunits, arbitrary motion of linker regions and torsion degrees of freedom for sidechains. The second member of each ensemble is represented in model 11, which was fixed in the calculations. The ten pairs of weights for the ten ensemble members are Ensemble 1: MODEL 1, weight: 0.503 MODEL 11, weight: 0.497 Ensemble 2: MODEL 2, weight: 0.518 MODEL 11, weight: 0.482 Ensemble 3: MODEL 3, weight: 0.526 MODEL 11, weight: 0.474 Ensemble 4: MODEL 4, weight: 0.520 MODEL 11, weight: 0.480 Ensemble 5: MODEL 5, weight: 0.508 MODEL 11, weight: 0.492 Ensemble 6: MODEL 6, weight: 0.531 MODEL 11, weight: 0.469 Ensemble 7: MODEL 7, weight: 0.498 MODEL 11, weight: 0.501 Ensemble 8: MODEL 8, weight: 0.524 MODEL 11, weight: 0.476 Ensemble 9: MODEL 9, weight: 0.514 MODEL 11, weight: 0.486 Ensemble 10: MODEL 10, weight: 0.526 MODEL 11, weight: 0.474 | Xplor-NIH |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 11 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | chemical shift assignment | Sparky | Goddard | |
| 2 | refinement | Xplor-NIH | Schwieters, Kuszewski, Tjandra and Clore | |
| 3 | processing | NMRPipe | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax | |
| 4 | collection | TopSpin | Bruker Biospin | |
