ELECTRON MICROSCOPY

Sample

Engaged ribosome SRP complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details 3 uL of sample was incubated on the grid for 30 seconds, blotted for 3 seconds, then flash-frozen in liquid ethane (FEI VITROBOT MARK IV).
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 52061
Reported Resolution (Å) 3.75
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 ?
Refinement Target R-factor
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type FEI FALCON II (4k x 4k)
Electron Dose (electrons/Å2) 27
Imaging Experiment
Date of Experiment 2014-06-16
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 3500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification 59000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
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