9QEW | pdb_00009qew

Cryo-EM structure of the undecorated actin filament in the ADP-Pi state.


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 8OI8 

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d11.9949
f_angle_d0.5594
f_chiral_restr0.0461
f_bond_d0.0042
f_plane_restr0.0039
Sample
Beta-actin filament.
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE-PROPANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles4674353
Reported Resolution (Å)2.18
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (8OI8)
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
DetailsPhenix real space refinement.
Data Acquisition
Detector TypeGATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å**2)68.4
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 FITTINGCoot0.9.8.1
MODEL FITTINGUCSF ChimeraX1.8
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 CORRECTIONPatch CTF9946495