8TWE
Cryo-EM structure of the PP2A:B55-FAM122A complex, B55 body
ELECTRON MICROSCOPY
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 3DW8 | |
in silico model | AlphaFold | Q96E09 |
Sample |
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Quadruple complex of PP2A:B55 (PP2Aa:PP2Ac:B55) bound to FAM122A |
Specimen Preparation | |
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Sample Aggregation State | PARTICLE |
Vitrification Instrument | FEI VITROBOT MARK IV |
Cryogen Name | ETHANE |
Sample Vitrification Details |
3D Reconstruction | |
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Reconstruction Method | SINGLE PARTICLE |
Number of Particles | 103522 |
Reported Resolution (Å) | 2.55 |
Resolution Method | FSC 0.143 CUT-OFF |
Other Details | |
Refinement Type | |
Symmetry Type | POINT |
Map-Model Fitting and Refinement | |||||
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Id | 1 (3DW8) | ||||
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 | |||||||||
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Detector Type | GATAN K3 BIOQUANTUM (6k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 70 |
Imaging Experiment | 1 |
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Date of Experiment | |
Temperature (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 | 81000 |
Calibrated Magnification | |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 300 |
Imaging Details |
EM Software | ||
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Task | Software Package | Version |
PARTICLE SELECTION | RELION | 4.0 |
PARTICLE SELECTION | Topaz | 0.2.5 |
IMAGE ACQUISITION | EPU | 3.0 |
CTF CORRECTION | CTFFIND | 4.1.14 |
CTF CORRECTION | RELION | 4.0 |
MODEL FITTING | UCSF ChimeraX | 1.4 |
MODEL REFINEMENT | PHENIX | 1.20.1-4487 |
MODEL REFINEMENT | Coot | 0.9 |
INITIAL EULER ASSIGNMENT | RELION | 4.0 |
FINAL EULER ASSIGNMENT | RELION | 4.0 |
RECONSTRUCTION | RELION | 4.0 |
Image Processing | ||||
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CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
PHASE FLIPPING AND AMPLITUDE CORRECTION | 1248538 |