ELECTRON MICROSCOPY

Sample

Beta-galactosidase from E. coli; tetrameric complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument ?
Cryogen Name OTHER
Sample Vitrification Details Soft-landed as described in manuscript
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 463000
Reported Resolution (Å) 2.6
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 ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details Initial flexible fitting was performed using ISOLDE and Real-Space Refinement was performed using PHENIX.
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 34
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 2500
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 105000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION EPU ?
MODEL FITTING ISOLDE ?
FINAL EULER ASSIGNMENT cryoSPARC ?
RECONSTRUCTION cryoSPARC ?
MODEL REFINEMENT PHENIX 1.20
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION As implemented in cryoSPARC
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