2LP4
Solution structure of P1-CheY/P2 complex in bacterial chemotaxis
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D 1H-15N HSQC | 200 mM [U-15N; U-2H] CheY, 3000 mM [U-2H] CheA P1, 250 mM [U-2H] CheA P2 | 92% H2O/8% D2O | 0.05 | 6.5 | ambient | 298 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Varian | INOVA | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| torsion angle dynamics | THE AUTHORS STATE THAT THE STRUCTURE CALCULATION USED X-RAY STRUCTURES SALMONELLA TYPHIMURIUM P1 (1I5N) AND E. COLI CHEY/P2 (1EAY). THEY WERE CONFINED AS RIGID BODIES EXCEPT FOR THE DOMAIN LINKERS. THE PROGRAM XPLOR-NIH WAS USED TO REFINE THE STRUCTURES. | ANSIG3.3 |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 25 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | chemical shift assignment | ANSIG3.3 | Kraulis | |
| 2 | refinement | XPLOR-NIH | Schwieters, Kuszewski, Tjandra and Clore | |
