ELECTRON MICROSCOPY

Sample

Type IV-A3 CRISPR-Cas effector complex from Klebsiella pneumoniae bound to crRNA and target DNA

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 104035
Reported Resolution (Å) 3.1
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 ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å2) 30
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS GLACIOS
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 2000
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 92000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 4.2
IMAGE ACQUISITION EPU ?
CTF CORRECTION cryoSPARC 4.2
MODEL FITTING Coot 0.9.8
MODEL FITTING ISOLDE 1.4
MODEL REFINEMENT PHENIX 1.19.2-4158
INITIAL EULER ASSIGNMENT cryoSPARC 4.2
FINAL EULER ASSIGNMENT cryoSPARC 4.2
CLASSIFICATION cryoSPARC 4.2
RECONSTRUCTION cryoSPARC 4.2
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?