ELECTRON MICROSCOPY

Sample

The binary complex of the yeast 40S small ribosomal subunit with the eukaryotic initiation factor 4B.

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Vitrification was carried out in nitrogen atmosphere.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 108616
Reported Resolution (Å) 4.6
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol RIGID BODY FIT
Refinement Target Cross-correlation coefficient
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 50
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TALOS ARCTICA
Minimum Defocus (nm) 1500
Maximum Defocus (nm) 3000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode DIFFRACTION
Specimen Holder Model ?
Nominal Magnification 42000
Calibrated Magnification 42000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details Preliminary grid screening was done manually using the Latitude-S
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 3.1.1
IMAGE ACQUISITION Latitude S
CTF CORRECTION RELION 3.1.1
MODEL FITTING UCSF Chimera 1.15
INITIAL EULER ASSIGNMENT RELION 3.1.1
FINAL EULER ASSIGNMENT RELION 3.1.1
RECONSTRUCTION RELION 3.1.1
MODEL REFINEMENT PHENIX 1.18.2-3874
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?