6NMI
Cryo-EM structure of the human TFIIH core complex
ELECTRON MICROSCOPY
| Sample |
|---|
| Transcription factor IIH (TFIIH) |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | A thin film of continuous carbon was floated onto Protochips C-flat CF-4/2 holey carbon grids and glow discharged or plasma cleaned before application ... |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 138659 |
| Reported Resolution (Å) | 3.7 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (5OF4, 4ERN, 5OQJ, 1G25, 5O85, 2DII, 2JNJ) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | RIGID BODY FIT | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | Reference structures and homology models were docked and subsequently completely rebuilt according to the density. Parts of the structure were traced ... | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 50 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 500 |
| Maximum Defocus (nm) | 700 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.7 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
| Nominal Magnification | |
| Calibrated Magnification | 43478 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details | Residual beam tilt corrected in RELION 3. |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | SerialEM | |
| CTF CORRECTION | Gctf | |
| CTF CORRECTION | RELION | 3 |
| MODEL FITTING | UCSF Chimera | |
| MODEL FITTING | Coot | |
| MODEL FITTING | O | |
| INITIAL EULER ASSIGNMENT | RELION | 3 |
| FINAL EULER ASSIGNMENT | RELION | 3 |
| CLASSIFICATION | RELION | 3 |
| RECONSTRUCTION | RELION | 3 |
| MODEL REFINEMENT | PHENIX | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | CTF correction during 3D reconstruction in RELION 3. | |||
