3J80
CryoEM structure of 40S-eIF1-eIF1A preinitiation complex
ELECTRON MICROSCOPY
Sample |
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40S-eIF1-eIF1A preinitiation complex |
Sample Components |
Ribosome small subunit |
Eukaryotic initiation factor 1 |
Eukaryotic initiation factor 1A |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | FEI VITROBOT MARK I |
Cryogen Name | ETHANE |
Sample Vitrification Details | Blot for 2.5 seconds before plunging into liquid ethane (FEI VITROBOT MARK I) |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 100709 |
Reported Resolution (Å) | 3.75 |
Resolution Method | FSC 0.143 CUT-OFF |
Other Details | |
Refinement Type | |
Symmetry Type | POINT |
Point Symmetry | C1 |
Map-Model Fitting and Refinement | |||||
---|---|---|---|---|---|
Id | 1 (3U5B, 3U5C) | ||||
Refinement Space | RECIPROCAL | ||||
Refinement Protocol | FLEXIBLE FIT | ||||
Refinement Target | R-factor, FSC | ||||
Overall B Value | |||||
Fitting Procedure | |||||
Details | REFINEMENT PROTOCOL--flexible |
Data Acquisition | |||||||||
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Detector Type | FEI FALCON II (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 28 |
Imaging Experiment | 1 |
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Date of Experiment | 2013-10-28 |
Temperature (Kelvin) | |
Microscope Model | FEI POLARA 300 |
Minimum Defocus (nm) | 1600 |
Maximum Defocus (nm) | 4000 |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | 2 |
Imaging Mode | BRIGHT FIELD |
Specimen Holder Model | |
Nominal Magnification | 78000 |
Calibrated Magnification | 104478 |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details | Complete dataset was collected in 5 non-consecutive days |
EM Software | ||
---|---|---|
Task | Software Package | Version |
MODEL FITTING | REFMAC | |
MODEL FITTING | UCSF Chimera | |
RECONSTRUCTION | EMAN | 2 |
RECONSTRUCTION | RELION |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
Each particle |