ELECTRON MICROSCOPY

Sample

bovine Arp2/3 complex with Arpin

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument LEICA EM CPC
Cryogen Name ETHANE
Sample Vitrification Details Grids were manually blotted for 3 seconds with Whatman 41 filter paper and manually plunged using a Leica EM CPC manual plunger.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 182324
Reported Resolution (Å) 3.24
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 correlation
Overall B Value 132
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 (6k x 4k)
Electron Dose (electrons/Å2) 50
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) -1500
Maximum Defocus (nm) -3500
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 ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Data were collected in super-resolution mode with an illuminated area of 1.01 um, nominal dose of 40 e-/A^2, a dose rate of 4.87 e-/s/pixel, and 2 or 5 exposures per hole by image shift.
Imaging Experiment
Task Software Package Version
IMAGE ACQUISITION Latitude ?
CTF CORRECTION CTFFIND 4.1.13
CTF CORRECTION cryoSPARC 2.12.4
MODEL FITTING Coot ?
INITIAL EULER ASSIGNMENT cryoSPARC 2.12.4
FINAL EULER ASSIGNMENT cryoSPARC 2.12.4
CLASSIFICATION cryoSPARC 2.12.4
RECONSTRUCTION cryoSPARC 2.12.4
MODEL REFINEMENT PHENIX ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION CTF correction was done in cryoSPARC for intial 2D classification and then repeated in CTFFIND4 (Relion) for classification and final reconstruction.