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Cryo-EM structure of retron Eco2 (Ec67) in presence of Mg ions
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model AlphaFold experimental model Other D_1292144007
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 20.595 f_angle_d 0.517 f_chiral_restr 0.038 f_plane_restr 0.004 f_bond_d 0.003
Sample Ternary complex of retron Eco2 (Ec67) with RNA and DNA in presence of Mg ions
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 1017678 Reported Resolution (Å) 3 Resolution Method FSC 0.143 CUT-OFF Other Details symmetry expanded particles used for the final model. 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) 30.31
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 BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 92000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.6 MODEL REFINEMENT PHENIX 1.21.2_5419 IMAGE ACQUISITION EPU 3.10 RECONSTRUCTION cryoSPARC 4.6
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 544986