7TPT
Single-particle Cryo-EM structure of Arp2/3 complex at branched-actin junction.
ELECTRON MICROSCOPY
| Sample |
|---|
| Complex consisting of Arp2/3 complex-mediated branched actin junction |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | HOMEMADE PLUNGER |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 127093 |
| Reported Resolution (Å) | 3.9 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Point Symmetry | C1 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | |||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | FEI FALCON III (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 41.97 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TALOS ARCTICA |
| Minimum Defocus (nm) | 800 |
| Maximum Defocus (nm) | 1200 |
| 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 | 92000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details | Data were collected by shifting of stage to targeted exposure position. Stage was tilted to different angles: including 40 degree, 36 degree, 30 degree, 25 degree, 15 degree, 0 degree, -20 degree, and -33 degree during data collection. |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| PARTICLE SELECTION | cryoSPARC | version 2 |
| IMAGE ACQUISITION | EPU | 2.1 |
| CTF CORRECTION | cryoSPARC | version 2 |
| MODEL FITTING | NAMD | |
| MODEL FITTING | Coot | |
| MODEL FITTING | UCSF Chimera | |
| FINAL EULER ASSIGNMENT | cryoSPARC | Version 2 |
| RECONSTRUCTION | cryoSPARC | version 2 |
| MODEL REFINEMENT | PHENIX | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | Particles were CTF-corrected during projection matching and back projection | 2290562 | ||
