7QP7
Structure of the human 48S initiation complex in closed state (h48S AUG closed)
ELECTRON MICROSCOPY
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details |
| experimental model | PDB | 6ZMW | |
| Sample |
|---|
| Human 48S initiation complex 40S-eIF1-eIF1A-eIF2-eIF3-tRNA-Met-mRNA |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | PARTICLE |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | Cryo-EM grids were prepared by floating home-made continuous carbon on 40 ul sample in the wells of teflon block (custom-made). The sample-covered car ... |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | SINGLE PARTICLE |
| Number of Particles | 364950 |
| 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 (6ZMW) | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | FLEXIBLE FIT | ||||
| Refinement Target | RSCC | ||||
| Overall B Value | |||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | FEI FALCON III (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 48 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | 1500 |
| Maximum Defocus (nm) | 4000 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 0.01 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
| Nominal Magnification | 59000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details | Aberration corrections performed using Cs image corrector (CEOS company) |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| MODEL FITTING | Coot | 0.9.4 |
| MODEL FITTING | UCSF ChimeraX | 1.2 |
| INITIAL EULER ASSIGNMENT | RELION | 3.1 |
| FINAL EULER ASSIGNMENT | RELION | |
| CLASSIFICATION | RELION | 3.1 |
| RECONSTRUCTION | RELION | 3.1 |
| MODEL REFINEMENT | ISOLDE | 1.1 |
| MODEL REFINEMENT | Coot | 0.9.4 |
| MODEL REFINEMENT | UCSF ChimeraX | 1.2 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING AND AMPLITUDE CORRECTION | 990486 | |||
