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Cryo-EM structure of the cofilactin filament core at 2.3 Angstrom resolution.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6VAO
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 11.1427 f_angle_d 0.512 f_chiral_restr 0.0437 f_bond_d 0.0033 f_plane_restr 0.0032
Sample Cofilactin filament core Sample Components Actin filament Cofilin-1
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE-PROPANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 4767360 Reported Resolution (Å) 2.31 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6VAO) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details The final model refinement was performed using Phenix real space refinement.
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 71.7
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1200 Maximum Defocus (nm) 2700 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 0.01 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 105000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.4 IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC 4.4 MODEL FITTING UCSF ChimeraX 1.8 MODEL FITTING Coot 0.9.8.1 INITIAL EULER ASSIGNMENT cryoSPARC 4.4 FINAL EULER ASSIGNMENT cryoSPARC 4.4 CLASSIFICATION cryoSPARC 4.4 RECONSTRUCTION cryoSPARC 4.4 MODEL REFINEMENT PHENIX 1.21rc1_5015
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 8428096