The Structure of the Cyclin T-binding domain of Hexim1 reveals the molecular basis for regulation of transcription elongation
SOLUTION NMR
| NMR Experiment | ||||||||
|---|---|---|---|---|---|---|---|---|
| Experiment | Type | Sample Contents | Solvent | Ionic Strength | pH | Pressure | Temperature (K) | Spectrometer |
| 1 | 3D_13C-separated_NOESY | 0.6 mM U-15N,13C, 20 mM potassium phosphate buffer, pH 7.2, 50 mM NaCl, 10mM TCEP/HCl, 1 mM DTE, 0.02% Na-azide | 100% D2O | 50 mM NaCl, 20 mM KPi | 7.2 | ambient | 308 | |
| 2 | 3D_15N-separated_NOESY | 1.2 mM U-15N, 20 mM potassium phosphate buffer, pH 7.2, 50 mM NaCl, 10mM TCEP/HCl, 1 mM DTE, 0.02% Na-azide, 95% H2O, 5% D2O | 95% H2O/5% D2O | 50 mM NaCl, 20 mM KPi | 7.2 | ambient | 308 | |
| 3 | 3D 13C-filter-edit-NOESY | 0.5 mM U-15N,13C, 0.5 mM unlabeled, 20 mM potassium phosphate buffer, pH 7.2, 50 mM NaCl, 10mM TCEP/HCl, 1 mM DTE, 0.02% Na-azide, 95% H2O, 5% D2O | 95% H2O/5% D2O | 50 mM NaCl, 20 mM KPi | 7.2 | ambient | 308 | |
| 4 | 3D HNHA, 3D HNHB | 1.2 mM U-15N, 20 mM potassium phosphate buffer, pH 7.2, 50 mM NaCl, 10mM TCEP/HCl, 1 mM DTE, 0.02% Na-azide, 95% H2O, 5% D2O | 95% H2O/5% D2O | 50 mM NaCl, 20 mM KPi | 7.2 | ambient | 308 | |
| 5 | 3D HACAHB-COSY | 0.6 mM U-15N,13C, 20 mM potassium phosphate buffer, pH 7.2, 50 mM NaCl, 10mM TCEP/HCl, 1 mM DTE, 0.02% Na-azide | 100% D2O | 50 mM NaCl, 20 mM KPi | 7.2 | ambient | 308 | |
| 6 | 2D 15N-IPAP-HSQC, 3D HNCACO | 0.6 mM U-15N,13C, 20 mM potassium phosphate buffer, pH 7.2, 50 mM NaCl, 10mM TCEP/HCl, 1 mM DTE, 0.02% Na-azide | 95% H2O, 5% D2O, 16 mg/ml PF1 phage | 50 mM NaCl, 20 mM KPi | 7.2 | ambient | 308 | |
| NMR Spectrometer Information | |||
|---|---|---|---|
| Spectrometer | Manufacturer | Model | Field Strength |
| 1 | Bruker | DRX | 800 |
| 2 | Bruker | DRX | 600 |
| NMR Refinement | ||
|---|---|---|
| Method | Details | Software |
| torsion angle dynamics and cartesian coordinate simulated annealing | The structures are based on a total of 2592 NOE distance restraints, 163 dihedral angle restraints, 102 hydrogen bonds distance restraints, and 80 RDC restraints per monomer. | NMRPipe |
| NMR Ensemble Information | |
|---|---|
| Conformer Selection Criteria | structures with the lowest energy |
| Conformers Calculated Total Number | 200 |
| Conformers Submitted Total Number | 20 |
| Representative Model | 1 (lowest energy) |
| Additional NMR Experimental Information | |
|---|---|
| Details | The structure was determined using triple-resonance NMR spectroscopy in solution. |
| Computation: NMR Software | ||||
|---|---|---|---|---|
| # | Classification | Version | Software Name | Author |
| 1 | processing | NMRPipe | F.Delaglio | |
| 2 | data analysis | NMRView | 5.0.4 | B.A.Johnson |
| 3 | structure solution | X-PLOR-NIH | 2.9.9 | A.T.Bruenger, C.D.Schwieters |
| 4 | refinement | X-PLOR-NIH | 2.9.9 | A.T.Bruenger, C.D.Schwieters |
