7MH2

T4GALA Engineered Protein Nanocage


ELECTRON MICROSCOPY
Sample
T4GALA Engineered Protein Nanocage
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsBlot force: 20 Blot time: 4 seconds Wait time: 0 seconds
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles6707
Reported Resolution (Å)3.57
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryI
Map-Model Fitting and Refinement
Id1 (6NJ8)
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement TargetCorrelation Coefficient
Overall B Value81.22
Fitting Procedure
DetailsModel was initially docked in Chimera using Fit to Map command. Chains were manually refined in Coot with rigid body refinement, chain refinement, and ...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 TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)62
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS GLACIOS
Minimum Defocus (nm)-1300
Maximum Defocus (nm)-1800
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification45000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC2.15.00
PARTICLE SELECTIONcryoSPARC2.15.00
IMAGE ACQUISITIONLeginon
CTF CORRECTIONcryoSPARC2.15.00
MODEL FITTINGUCSF Chimera1.14
MODEL FITTINGCoot0.9
INITIAL EULER ASSIGNMENTcryoSPARC2.15.00
FINAL EULER ASSIGNMENTcryoSPARC2.15.00
RECONSTRUCTIONcryoSPARC2.15.00
MODEL REFINEMENTPHENIX1.19
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION