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Type III-B Cmr-beta Cryo-EM structure of the Apo state
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 7.456 f_angle_d 0.804 f_chiral_restr 0.053 f_bond_d 0.008 f_plane_restr 0.005
Sample Type III-B Cmr-beta binary complex, crRNA-bound
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details 3-4 s blotting before plunging
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 69043 Reported Resolution (Å) 2.75 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 REAL Refinement Protocol AB INITIO MODEL Refinement Target Cross-correlation coefficient Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON III (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) 1700 Maximum Defocus (nm) 2600 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.1 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 96000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION EPU CTF CORRECTION Gctf 1.06 MODEL FITTING UCSF Chimera MODEL FITTING Coot MODEL FITTING PHENIX INITIAL EULER ASSIGNMENT RELION 3.0 FINAL EULER ASSIGNMENT cisTEM 1.0 CLASSIFICATION cisTEM 1.0 RECONSTRUCTION cisTEM 1.0 MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 614000