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Beta carbonic anhydrase CsoSCA from the Halothiobacillus neapolitanus alpha-carboxysome
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model AlphaFold
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 3.6538 f_angle_d 0.5621 f_chiral_restr 0.04 f_bond_d 0.0037 f_plane_restr 0.0036
Sample Carbonic anhydrase complex
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 435319 Reported Resolution (Å) 2.51 Resolution Method FSC 0.143 CUT-OFF Other Details Homogeneous refinement in cryoSPARC Refinement Type Symmetry Type POINT Point Symmetry D3
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Cross-correlation coefficient Overall B Value Fitting Procedure Details Model fitting using ChimeraX
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 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 240000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.5 IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC 4.5 MODEL FITTING UCSF ChimeraX 1.8 INITIAL EULER ASSIGNMENT cryoSPARC 4.5 FINAL EULER ASSIGNMENT cryoSPARC 4.5 CLASSIFICATION cryoSPARC 4.5 RECONSTRUCTION cryoSPARC 4.5 MODEL REFINEMENT PHENIX 1.21.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION Patch CTF in cryoSPARC 1390946 Blob picker with 150 A diameter. Picks verified using inspect picks job.