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Cryo-EM structure of precleavage Cre tetrameric complex
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2HOI
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 20.494 f_angle_d 0.789 f_chiral_restr 0.046 f_plane_restr 0.012 f_bond_d 0.004
Sample Precleavage synaptic complex of Cre recombinase mutant K201A and loxP DNA
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE-PROPANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 315574 Reported Resolution (Å) 3.23 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (2HOI) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target correlation coefficient Overall B Value 130 Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 60
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 3000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 81000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION Topaz PARTICLE SELECTION cryoSPARC IMAGE ACQUISITION EPU 2.7 CTF CORRECTION cryoSPARC 3.0.1 MODEL FITTING ISOLDE 1.2 INITIAL EULER ASSIGNMENT cryoSPARC 3.0.1 FINAL EULER ASSIGNMENT cryoSPARC 3.0.1 RECONSTRUCTION cryoSPARC 3.0.1 MODEL REFINEMENT PHENIX 1.19 MODEL REFINEMENT Coot 0.9.4.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 737980