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CryoEM structure of 40S-eIF1A-eIF1 complex from yeast
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3J80
Sample Initiation factors eIF1A and eIF1 bound to the 40S ribosome Sample Components Ribosome small subunit 40S Eukaryotic initiation factor eIF1A Eukaryotic initiation factor eIF1
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK I Cryogen Name ETHANE Sample Vitrification Details Blot for 2.5 to 3 seconds before plunging into liquid ethane (FEI VITROBOT MARK I).
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 86055 Reported Resolution (Å) 3.46 Resolution Method FSC 0.143 CUT-OFF Other Details gold-standard Refinement Type HALF-MAPS REFINED INDEPENDENTLY Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (3J80) Refinement Space RECIPROCAL Refinement Protocol OTHER Refinement Target R-factor, FSC Overall B Value 89 Fitting Procedure Details METHOD--Local refinement
Data Acquisition Detector Type FEI FALCON II (4k x 4k) Electron Dose (electrons/Å**2) 27
Imaging Experiment 1 Date of Experiment 2014-04-28 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 2.7 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 over two non-consecutive days.
EM Software Task Software Package Version MODEL FITTING Coot MODEL FITTING REFMAC MODEL FITTING UCSF Chimera RECONSTRUCTION RELION