ELECTRON MICROSCOPY

Sample

Quadruple complex of PP2A:B55 (PP2Aa:PP2Ac:B55) bound to thiophosphorylated ARPP19

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 52934
Reported Resolution (Å) 2.77
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 FLEXIBLE FIT
Refinement Target Cross-correlation
Overall B Value ?
Fitting Procedure ?
Details Iterating between manual refinement in Coot and automated real-space refinement in Phenix
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 70
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 700
Maximum Defocus (nm) 1900
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 105000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 4.0.1
PARTICLE SELECTION Topaz 0.2.5
IMAGE ACQUISITION EPU 3.2
CTF CORRECTION CTFFIND 4.1.14
CTF CORRECTION RELION 4.0.1
MODEL FITTING UCSF ChimeraX 1.6
INITIAL EULER ASSIGNMENT RELION 4.0.1
FINAL EULER ASSIGNMENT RELION 4.0
RECONSTRUCTION RELION 4.0.1
MODEL REFINEMENT PHENIX 1.20.1-4487
MODEL REFINEMENT Coot 0.9
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?