ELECTRON MICROSCOPY

Sample

Binary complex of human PARP4 bound to oligomerized human MVP

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Vitrification carried out under standard conditions
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 44443
Reported Resolution (Å) 2.9
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 ?
Overall B Value ?
Fitting Procedure ?
Details The starting model was the rat homologue of MVP from a previous crystal structure of the vault cage (PDB accession no 4V60). The final model was refined in real space and validated using PHENIX.
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 45
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 700
Maximum Defocus (nm) 1700
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 0.01
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification 53000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Preliminary grid screening was performed manually.
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 4.4
IMAGE ACQUISITION SerialEM 4.0
CTF CORRECTION cryoSPARC 4.4
MODEL FITTING Coot 0.8.9.2
MODEL REFINEMENT PHENIX 1.12
MODEL FITTING Coot 0.8.9.2
MODEL REFINEMENT PHENIX 1.12
INITIAL EULER ASSIGNMENT cryoSPARC 4.4
FINAL EULER ASSIGNMENT cryoSPARC 4.4
CLASSIFICATION cryoSPARC 4.4
RECONSTRUCTION cryoSPARC 4.4
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION CTF correction was performed when movies were imported into cryoSPARC Live