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Structure of the type I-G CRISPR effector
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 15.604 f_angle_d 0.631 f_chiral_restr 0.041 f_plane_restr 0.006 f_bond_d 0.003
Sample Type IG cascade core cas7 with CrRNA
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details blot time 3.5 blot force 4
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 415000 Reported Resolution (Å) 3.2 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target correlation coefficient Overall B Value 188 Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1600 Maximum Defocus (nm) 2800 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 105000 Calibrated Magnification 105000 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 Coot MODEL FITTING ISOLDE MODEL FITTING UCSF ChimeraX INITIAL EULER ASSIGNMENT RELION 4 FINAL EULER ASSIGNMENT RELION 4 CLASSIFICATION RELION 4 RECONSTRUCTION RELION 4 MODEL REFINEMENT PHENIX 1.20
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING ONLY 1000