2HV1
HADDOCK structure of ARNT PAS-B Homodimer
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 15N/1H HSQC | 1mM down to 125 micro M (15N) ARNT PAS-B, 50mM Tris, 17mM NaCl, 5mM DTT | 50mM Tris, 17mM NaCl | 7.5 | 298 | |||
| 2 | 15N/1H HSQC | 75 micro M (15N) ARNT PAS-B, 400 micro M ARNT PAS-B with CMSTL spin label attached (to C358 or C451), 50mM Tris, 17mM NaCl | 50mM Tris, 17mM NaCl | 7.5 | 298 | |||
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Varian | INOVA | 500 |
| 2 | Varian | INOVA | 600 |
| 3 | Varian | INOVA | 800 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| simulated annealing | HADDOCK | |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | |
| Conformers Calculated Total Number | 50 |
| Conformers Submitted Total Number | 8 |
| Representative Model | 1 (lowest energy) |
| Additional NMR Experimental Information | |
|---|---|
| Details | 15N/1H HSQC was used to Monitor (a) chemical shift perturbation upon complex formation to identify interaction interface, and (b) to identify backbone amide resonances that are significantly broadened due to their proximity to a paramagnetic spin label attached to its natural abundance homodimeric interaction partner. |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | structure solution | HADDOCK | 1.2 | BONVIN |
| 2 | processing | NMRPipe | 2.3 | DELAGLIO |
| 3 | structure solution | CNS | 1.1 | BRUNGER |
| 4 | data analysis | NMRView | 5.0.4 | JOHNSON |
| 5 | refinement | CNS | 1.1 | BRUNGER |
