NMR studies of a channel protein without membrane: structure and dynamics of water-solubilized KcsA
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 2D 1H-15N HSQC | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| 2 | 3D CBCA(CO)NH | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| 3 | 3D HNCO | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| 4 | 3D HNCA | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| 5 | 3D HNCACB | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| 6 | 3D HCCH-TOCSY | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| 7 | T1, T2, hetNOE | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| 8 | R2 dispersion | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| 9 | diffusion measurement | 0.2 mM [U-15N] WSK3_15N, 55 M [U-2H] D2O, 0.2 mM DSS | 95% H2O/5% D2O | no salt | 4.5 | ambient | 293 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | AVANCE | 800 |
| 2 | Bruker | AVANCE | 700 |
| 3 | Bruker | AVANCE | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | CYANA | |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 100 |
| Conformers Submitted Total Number | 20 |
| Representative Model | 1 (lowest energy) |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | structure solution | CYANA | 2.1 | Guntert, Mumenthaler and Wuthrich |
| 2 | structure solution | X-PLOR NIH | 2.15.0 | Schwieters, Kuszewski, Tjandra and Clore |
| 3 | collection | TopSpin | 1.3 | Bruker Biospin |
| 4 | chemical shift assignment | Sparky | 3.110 | Goddard |
| 5 | peak picking | Sparky | 3.110 | Goddard |
| 6 | data analysis | Sparky | 3.110 | Goddard |
| 7 | processing | NMRPipe | 2.4 | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax |
| 8 | data analysis | NMRPipe | 2.4 | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax |
| 9 | peak picking | NMRPipe | 2.4 | Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax |
| 10 | refinement | X-PLOR NIH | 2.15.0 | Schwieters, Kuszewski, Tjandra and Clore |
