7K25 | pdb_00007k25

Murine polyomavirus hexavalent capsomer, subparticle reconstruction


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1SIE 
experimental modelPDB 3GK8 

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d6.7761
f_angle_d0.8732
f_chiral_restr0.0537
f_bond_d0.009
f_plane_restr0.0072
Sample
Murine polyomavirus strain A2
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles929940
Reported Resolution (Å)2.9
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Map-Model Fitting and Refinement
Id1 (1SIE, 3GK8)
Refinement SpaceREAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
DetailsHomology model for Fab was generated using SwissModel. Initial models were docked into density in Chimera. Fab CDR loops were manually rebuilt in Coot ...Homology model for Fab was generated using SwissModel. Initial models were docked into density in Chimera. Fab CDR loops were manually rebuilt in Coot. Iterative rounds of real space refinements (PHENIX) and manual adjustment (coot) were conducted to improve fit to density.
Data Acquisition
Detector TypeFEI FALCON III (4k x 4k)
Electron Dose (electrons/Å**2)45
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
CTF CORRECTIONcryoSPARC
MODEL FITTINGUCSF Chimera
MODEL REFINEMENTCoot
MODEL REFINEMENTPHENIX
INITIAL EULER ASSIGNMENTRELION3.1
FINAL EULER ASSIGNMENTRELION3.1
RECONSTRUCTIONRELION3.1
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION