Structural and Functional Characterization of TM IX of the NHE1 Isoform of the Na+/H+ Exchanger
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D 1H-13C HSQC | 0.8-1.0 mM TMIX peptide | 95% H2O/5% D2O | 5.05 | ambient | 303.15 | ||
| 2 | 2D 1H-1H TOCSY | 0.8-1.0 mM TMIX peptide | 95% H2O/5% D2O | 5.05 | ambient | 303.15 | ||
| 3 | 2D 1H-1H NOESY | 0.8-1.0 mM TMIX peptide | 95% H2O/5% D2O | 5.05 | ambient | 303.15 | ||
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Varian | INOVA | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | 21 rounds of structural refinement in XPLOR-NIH by simulated annealing, then an additional 6 rounds were performed with dihedral angle potential scaling factors of 5, 50, 100, 100, 50 and 25. 15,000 cooling steps. | X-PLOR NIH |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 100 |
| Conformers Submitted Total Number | 40 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | structure solution | X-PLOR NIH | 2.18 | Schwieters, Kuszewski, Tjandra and Clore |
| 2 | peak picking | Sparky | 3.112 | Goddard |
| 3 | processing | NMRPipe | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax | |
| 4 | processing | NMRDraw | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax | |
| 5 | refinement | X-PLOR NIH | 2.18 | Schwieters, Kuszewski, Tjandra and Clore |
