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Cryo-EM structure of the Cas12m-crRNA-target DNA complex
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 17.6447 f_angle_d 0.634 f_chiral_restr 0.0442 f_bond_d 0.0072 f_plane_restr 0.0055
Sample Cas12m protein in complex with crRNA and cognate DNA, Gordonia otitidis NBRC 100426 system
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 204822 Reported Resolution (Å) 2.93 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 FEI FALCON III (4k x 4k) Electron Dose (electrons/Å**2) 29.7
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode OTHER Specimen Holder Model Nominal Magnification 92000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.2.1 IMAGE ACQUISITION EPU 3.2 MODEL FITTING UCSF ChimeraX 1.3 MODEL FITTING Coot 0.9.8.1 RECONSTRUCTION cryoSPARC 4.2.1 MODEL REFINEMENT PHENIX 1.21rc1_4903
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE