ELECTRON MICROSCOPY

Sample

ErmCL-stalled E. coli ribosome

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Plunged into liquid ethane (FEI VITROBOT MARK IV).
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 269163
Reported Resolution (Å) 3.9
Resolution Method FSC 0.143 CUT-OFF
Other Details Since the microscopy images were processed in the absence of spatial frequencies higher than 8 A, a FSC cut-off value of 0.143 was used for average resolution determination of 3.9 A (Scheres and Chen, 2012). (Single particle--Applied symmetry: C1)
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details REFINEMENT PROTOCOL--rigid body DETAILS--The crystal structure of the E. coli 50S subunit was fitted as a rigid body.
Data Acquisition
Detector Type FEI FALCON II (4k x 4k)
Electron Dose (electrons/Å2) .
Imaging Experiment
Date of Experiment 2014-03-12
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) ?
Maximum Defocus (nm) ?
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 0
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 125085
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
MODEL FITTING UCSF Chimera ?
RECONSTRUCTION SPIDER ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. defocus groups