Cryo-EM structure of the regulatory linker of ALC1 bound to the nucleosome's acidic patch: nucleosome class.
ELECTRON MICROSCOPY
| Sample |
|---|
| Crosslinked complex of ALC1 regulatory linker and the nucleosome |
| Sample Components |
| Histones |
| DNA |
| Chromodomain-helicase-DNA-binding protein 1-like |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Blot time 2.5 s, blot force 0. Two sample applications and blots were performed before vitrification. |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 636544 |
| Reported Resolution (Å) | 2.5 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (3LZ0, 3LZ0, 3LZ0, 3LZ0, 3LZ0, 3LZ0, 3LZ0, 3LZ0, 3LZ0, 3LZ0, 1ZLA) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | Real-space CC between model and map | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 BIOQUANTUM (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 50.4 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | TFS KRIOS |
| Minimum Defocus (nm) | |
| Maximum Defocus (nm) | |
| 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 | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | EPU | 2.6.1 |
| CTF CORRECTION | Gctf | 1.18b2 |
| MODEL FITTING | UCSF Chimera | 0.93 |
| INITIAL EULER ASSIGNMENT | RELION | 3.1 |
| FINAL EULER ASSIGNMENT | RELION | 3.1 |
| CLASSIFICATION | RELION | 3.1 |
| RECONSTRUCTION | RELION | 3.1 |
| MODEL REFINEMENT | ISOLDE | 1.0b5 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 2968853 | Particles were picked with Warp's neural network picker, using model BoxNet2Mask_20180918. | ||
