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Cryo-EM structure of Pseudomonas aeruginosa recombinase A (RecA) in complex with ssDNA 72mer and ATPgS
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model SwissModel
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 12.671 f_angle_d 0.603 f_chiral_restr 0.044 f_bond_d 0.004 f_plane_restr 0.004
Sample recombinase A (RecA) assembled onto ssDNA 72-mer in presence of ATPgS and Mg2+ Sample Components Recombinase A (RecA) ssDNA
Specimen Preparation Sample Aggregation State HELICAL ARRAY Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method HELICAL Number of Particles 202842 Reported Resolution (Å) 4.2 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type HELICAL Axial Symmetry C1 Axial Rise 15.4 Angular Rotation 59.2
Map-Model Fitting and Refinement Id 1 2 Refinement Space REAL Refinement Protocol OTHER Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 49
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL REFINEMENT PHENIX RECONSTRUCTION cryoSPARC 4.2.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 427064