ELECTRON MICROSCOPY

Sample

RelA bound to 70S ribosome in the presence of A/R tRNA (Structure IV)

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument GATAN CRYOPLUNGE 3
Cryogen Name ETHANE
Sample Vitrification Details Apply 2 uL sample and blot 4 seconds before plunging into liquid ethane (GATAN CRYOPLUNGE 3).
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 57430
Reported Resolution (Å) 3.9
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 1.6
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 500
Maximum Defocus (nm) 2200
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 30488
Calibrated Magnification 30488
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION SerialEM ?
CTF CORRECTION CTFFIND 3
CTF CORRECTION FREALIGN 9.07-9.12
MODEL FITTING UCSF Chimera ?
MODEL FITTING PyMOL ?
MODEL REFINEMENT CNS-RSREF ?
INITIAL EULER ASSIGNMENT FREALIGN 9.07-9.12
FINAL EULER ASSIGNMENT FREALIGN 9.07-9.12
CLASSIFICATION FREALIGN 9.07-9.12
RECONSTRUCTION FREALIGN 9.07-9.12
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?