ELECTRON MICROSCOPY

Sample

Partial yeast 48S preinitiation complex

Specimen Preperation
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 21401
Reported Resolution (Å) 4.9
Resolution Method FSC 0.143 CUT-OFF
Other Details gold-standard
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space RECIPROCAL
Refinement Protocol OTHER
Refinement Target R-factor, FSC
Overall B Value ?
Fitting Procedure ?
Details METHOD--Local refinement
Data Acquisition
Detector Type FEI FALCON II (4k x 4k)
Electron Dose (electrons/Å2) 27
Imaging Experiment
Date of Experiment 2014-07-04
Temprature (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 59000
Calibrated Magnification 104478
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Complete dataset was collected over two non-consecutive days.
Imaging Experiment
Task Software Package Version
MODEL FITTING Coot ?
MODEL FITTING REFMAC ?
MODEL FITTING UCSF Chimera ?
RECONSTRUCTION RELION ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. Each particle