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Type III-B CRISPR-Cas effector from Archaeoglobus fulgidus (Form 1)
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 5.7958 f_angle_d 0.5039 f_chiral_restr 0.0391 f_plane_restr 0.0032 f_bond_d 0.0022
Sample Archaeoglobus fulgidus type III-B CRISPR-Cas effector
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 80152 Reported Resolution (Å) 2.97 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOCONTINUUM (6k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model JEOL CRYO ARM 300 Minimum Defocus (nm) 1400 Maximum Defocus (nm) 1600 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 60000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.3.1 IMAGE ACQUISITION SerialEM MODEL FITTING UCSF ChimeraX 1.7.1 INITIAL EULER ASSIGNMENT cryoSPARC 4.3.1 FINAL EULER ASSIGNMENT cryoSPARC 4.3.1 RECONSTRUCTION cryoSPARC 4.3.1 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