ELECTRON MICROSCOPY

Sample

PhiKZ non-virion RNA polymerase bound to an analogue of promoter p119L

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Settings: -4 blot force, 4 s waiting time and 0.5-1 s blotting time.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 329400
Reported Resolution (Å) 2.59
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol AB INITIO MODEL
Refinement Target CC
Overall B Value 104.82
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 50
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 750
Maximum Defocus (nm) 2500
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 130000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION EMAN ?
IMAGE ACQUISITION EPU ?
CTF CORRECTION CTFFIND 4
MODEL FITTING UCSF Chimera ?
INITIAL EULER ASSIGNMENT RELION 4
FINAL EULER ASSIGNMENT RELION 4
CLASSIFICATION RELION 4
RECONSTRUCTION RELION 4
MODEL REFINEMENT PHENIX ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?