ELECTRON MICROSCOPY

Sample

T4GALA Engineered Protein Nanocage

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details Blot force: 20 Blot time: 4 seconds Wait time: 0 seconds
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 6707
Reported Resolution (Å) 3.57
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 Coefficient
Overall B Value 81.22
Fitting Procedure ?
Details Model was initially docked in Chimera using Fit to Map command. Chains were manually refined in Coot with rigid body refinement, chain refinement, and iterative real space refinements. ASU was then refined using phenix.real_space_refine with default parameters. NCS operators were applied and refined again with NCS contstraints, global minimization, and ADP refinement.
Data Acquisition
Detector Type GATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å2) 62
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS GLACIOS
Minimum Defocus (nm) -1300
Maximum Defocus (nm) -1800
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification 45000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION cryoSPARC 2.15.00
PARTICLE SELECTION cryoSPARC 2.15.00
IMAGE ACQUISITION Leginon ?
CTF CORRECTION cryoSPARC 2.15.00
MODEL FITTING UCSF Chimera 1.14
MODEL FITTING Coot 0.9
INITIAL EULER ASSIGNMENT cryoSPARC 2.15.00
FINAL EULER ASSIGNMENT cryoSPARC 2.15.00
RECONSTRUCTION cryoSPARC 2.15.00
MODEL REFINEMENT PHENIX 1.19
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?
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