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Cryo-EM structure of F-actin in the Mg2+-ADP-BeF3- nucleotide state.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7AHN
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 18.5409 f_angle_d 0.55 f_chiral_restr 0.0436 f_bond_d 0.0039 f_plane_restr 0.0039
Sample rabbit skeletal alpha-actin in the filamentous state.
Specimen Preparation Sample Aggregation State FILAMENT Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details The Vitrobot was operated at 13 degrees celsius and the samples were blotted for 9 seconds with a blot force of -25.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 2228553 Reported Resolution (Å) 2.17 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7AHN) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 78.9
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 700 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 130000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION crYOLO 1.8 IMAGE ACQUISITION EPU CTF CORRECTION CTFFIND 4.13 MODEL FITTING UCSF ChimeraX 1.3 INITIAL EULER ASSIGNMENT SPHIRE 1.4 FINAL EULER ASSIGNMENT RELION 3.1.0 CLASSIFICATION RELION 3.1.0 RECONSTRUCTION RELION 3.1.0 MODEL REFINEMENT PHENIX v1.20.1-4487
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2897679