7Z0L

ELECTRON MICROSCOPY

Sample

IL-27 Signalling complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Blot time 2s, blot force -2
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 208431
Reported Resolution (Å) 4.0
Resolution Method FSC 0.143 CUT-OFF
Other Details Final reconstruction was performed using local refinement in cryoSPARC.
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol FLEXIBLE FIT
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details Initial fitting was performed using Chimera and ChimeraX. Then ISOLDE and Phenix real space refine were used to refine the model.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 50.0
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 500
Maximum Defocus (nm) 3500
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 81000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION EPU 2.11.1.11
CTF CORRECTION cryoSPARC 3.3.1
MODEL FITTING UCSF Chimera 1.13.1
MODEL FITTING UCSF ChimeraX 1.3
MODEL REFINEMENT ISOLDE 1.3
MODEL REFINEMENT PHENIX 1.19.2-4158
INITIAL EULER ASSIGNMENT cryoSPARC 3.3.1
FINAL EULER ASSIGNMENT cryoSPARC 3.3.1
CLASSIFICATION cryoSPARC 3.3.1
RECONSTRUCTION cryoSPARC 3.3.1
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
NONE CTF correction was performed following 3D reconstruction. Local CTF refinement was carried out during refinement