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Cryo-EM structure of 3DVA component 1 of Escherichia coli que-PEC (paused elongation complex) RNA Polymerase plus preQ1 ligand
Specimen Preparation
Sample Aggregation State
PARTICLE
Vitrification Instrument
FEI VITROBOT MARK IV
Cryogen Name
ETHANE
Sample Vitrification Details
Vitrification was carried out in a chamber with the temperature set to 4 C.
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
20469
Reported Resolution (Å)
4.3
Resolution Method
FSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry Type
POINT
Map-Model Fitting and Refinement
Id
1 (6ASX)
Refinement Space
REAL
Refinement Protocol
FLEXIBLE 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/Å**2)
62
Imaging Experiment
1
Date of Experiment
Temperature (Kelvin)
Microscope Model
FEI TITAN KRIOS
Minimum Defocus (nm)
500
Maximum Defocus (nm)
3500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode
BRIGHT FIELD
Specimen Holder Model
FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification
Calibrated Magnification
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
300
Imaging Details
EM Software
Task
Software Package
Version
IMAGE ACQUISITION
Leginon
3.6
MODEL FITTING
PHENIX
1.20_4459
MODEL REFINEMENT
PHENIX
1.20_4459
Image Processing
CTF Correction Type
CTF Correction Details
Number of Particles Selected
Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION
This is component 1 of 3DVA analysis of a particle stack of Cryo-EM consensus structure of Escherichia coli que-PEC (paused elongation complex) RNA Polymerase plus preQ1 ligand. Particles were already selected.