7BXT
The cryo-EM structure of CENP-A nucleosome in complex with CENP-C peptide and CENP-N N-terminal domain
ELECTRON MICROSCOPY
| Sample |
|---|
| CENP-A nucleosome in complex with CENP-C peptide and CNEP-N N-terminal domain |
| Sample Components |
| Histone H3,Histone H3-like centromeric protein A |
| Histone H4 |
| Histone H2A type 1-B/E |
| Histone H2B type 2-E |
| DNA |
| CENP-C |
| Maltodextrin-binding protein,Centromere protein N |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 118294 |
| Reported Resolution (Å) | 4.2 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C2 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | |||||
| Refinement Protocol | |||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 SUMMIT (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 1.2 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | JEOL CRYO ARM 200 |
| Minimum Defocus (nm) | -1000 |
| Maximum Defocus (nm) | -3500 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 1.4 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | JEOL CRYOSPECPORTER |
| Nominal Magnification | 50000 |
| Calibrated Magnification | 45454 |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | RELION | 3.08 |
| CTF CORRECTION | Gctf | |
| INITIAL EULER ASSIGNMENT | RELION | 3.08 |
| FINAL EULER ASSIGNMENT | RELION | 3.08 |
| CLASSIFICATION | RELION | 3.08 |
| RECONSTRUCTION | RELION | 3.08 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 421635 | |||
