ELECTRON MICROSCOPY

Sample

CD20 in complex with rituximab Fab

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details 5s blot time
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 149322
Reported Resolution (Å) 3.3
Resolution Method FSC 0.143 CUT-OFF
Other Details No data beyond 1/5 A-1 were used in refinement
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 Atomic model for CD20 was built ab initio and manually in COOT. It was then re-built using ISOLDE, and finally refined in Phenix.
Data Acquisition
Detector Type GATAN K2 QUANTUM (4k x 4k)
Electron Dose (electrons/Å2) 53
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) ?
Maximum Defocus (nm) ?
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 165000
Calibrated Magnification 58906
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cisTEM ?
IMAGE ACQUISITION SerialEM ?
CTF CORRECTION cisTEM ?
MODEL FITTING Coot ?
INITIAL EULER ASSIGNMENT cisTEM ?
FINAL EULER ASSIGNMENT cisTEM ?
CLASSIFICATION cisTEM ?
RECONSTRUCTION cisTEM ?
MODEL REFINEMENT PHENIX ?
MODEL FITTING UCSF Chimera ?
MODEL FITTING Coot ?
MODEL REFINEMENT PHENIX ?
MODEL FITTING ISOLDE ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
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