9QFJ | pdb_00009qfj

Cryo-EM structure of the cofilactin filament core at 2.3 Angstrom resolution.


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 6VAO 

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d11.1427
f_angle_d0.512
f_chiral_restr0.0437
f_bond_d0.0033
f_plane_restr0.0032
Sample
Cofilactin filament core
Sample Components
Actin filament
Cofilin-1
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE-PROPANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles4767360
Reported Resolution (Å)2.31
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (6VAO)
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
DetailsThe final model refinement was performed using Phenix real space refinement.
Data Acquisition
Detector TypeGATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)71.7
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelTFS KRIOS
Minimum Defocus (nm)1200
Maximum Defocus (nm)2700
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS0.01
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification105000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONcryoSPARC4.4
IMAGE ACQUISITIONEPU
CTF CORRECTIONcryoSPARC4.4
MODEL FITTINGUCSF ChimeraX1.8
MODEL FITTINGCoot0.9.8.1
INITIAL EULER ASSIGNMENTcryoSPARC4.4
FINAL EULER ASSIGNMENTcryoSPARC4.4
CLASSIFICATIONcryoSPARC4.4
RECONSTRUCTIONcryoSPARC4.4
MODEL REFINEMENTPHENIX1.21rc1_5015
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION8428096