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Cryo-EM structure of alpha-carboxysome T=4 mini-shell containing CTD only mutant of CsoSCA
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 8B11
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 3.866 f_angle_d 0.546 f_chiral_restr 0.041 f_bond_d 0.004 f_plane_restr 0.003
Sample T=4 alpha-carboxysome mini-shell
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 3003 Reported Resolution (Å) 3.1 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry I
Map-Model Fitting and Refinement Id 1 (8B11) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Cross correlation Overall B Value Fitting Procedure Details Model fitted using ChimeraX manual placement and fit in volume tool.
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS Minimum Defocus (nm) 600 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 240000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.3 IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC 4.3 MODEL FITTING UCSF ChimeraX INITIAL EULER ASSIGNMENT cryoSPARC 4.3 FINAL EULER ASSIGNMENT cryoSPARC 4.3 CLASSIFICATION cryoSPARC 4.3 RECONSTRUCTION cryoSPARC 4.3 MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION Patch CTF 123441 Blob picker with 300 A diameter. Picks verified using inspect picks job.