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CryoEM structure of 40S-eIF1-eIF1A preinitiation complex
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3U5B experimental model PDB 3U5C
Sample 40S-eIF1-eIF1A preinitiation complex Sample Components Ribosome small subunit Eukaryotic initiation factor 1 Eukaryotic initiation factor 1A
Specimen Preparation 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 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 Detector Type FEI FALCON II (4k x 4k) Electron Dose (electrons/Å**2) 28
Imaging Experiment 1 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 CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details Each particle