ELECTRON MICROSCOPY

Sample

RNAP-TopoI complex on long-overhang scaffold

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details ?
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 10189
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 1
Refinement Space REAL
Refinement Protocol OTHER
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details Initial rigid body fit was done in UCSF chimera, followed by all-atom refinement of RNAP using Phenix and Coot, and flexible fitting of TopoI domains.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 49.9
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 800
Maximum Defocus (nm) 2000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION crYOLO ?
IMAGE ACQUISITION SerialEM ?
CTF CORRECTION cryoSPARC ?
MODEL FITTING UCSF Chimera ?
MODEL FITTING ISOLDE ?
MODEL REFINEMENT PHENIX 1.20.1
MODEL REFINEMENT Coot 0.9.6
INITIAL EULER ASSIGNMENT cryoSPARC ?
FINAL EULER ASSIGNMENT cryoSPARC ?
CLASSIFICATION cryoSPARC ?
RECONSTRUCTION cryoSPARC ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
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