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Structure of human Apoferritin obtained from ssDNA coated grid
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7K3W
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 14.441 f_angle_d 0.739 f_chiral_restr 0.04 f_plane_restr 0.005 f_bond_d 0.004
Sample human heavy chain apoferritin
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details 6 s blot time,30 s waiting time, ssDNA covered grid
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 65786 Reported Resolution (Å) 1.77 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry O
Map-Model Fitting and Refinement Id 1 (7K3W) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target correlation coefficient Overall B Value 7 Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 40
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 300 Maximum Defocus (nm) 1700 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 IMAGE ACQUISITION EPU CTF CORRECTION CTFFIND 4 MODEL FITTING UCSF ChimeraX 1.3 INITIAL EULER ASSIGNMENT RELION 4.0 FINAL EULER ASSIGNMENT RELION 4.0 CLASSIFICATION RELION 4.0 RECONSTRUCTION RELION 4.0 MODEL REFINEMENT PHENIX 1.20.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 3282