8OUY

Human RAD51B-RAD51C-RAD51D-XRCC2 (BCDX2) complex, 3.4 A resolution


ELECTRON MICROSCOPY

Refinement

RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d4.7375
f_angle_d0.4973
f_chiral_restr0.0423
f_plane_restr0.0028
f_bond_d0.0023
Sample
RAD51B-RAD51C-RAD51D-XRCC2 (BCDX2)
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles87572
Reported Resolution (Å)3.4
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsMap was enhanced using DeepEMhancer
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
DetailsAlphaFold2 monomer predictions of RAD51B, RAD51C, RAD51D and XRCC2 were docked into the EM density using Dock and Rebuild in Phenix. ATP and Mg2+ were ...AlphaFold2 monomer predictions of RAD51B, RAD51C, RAD51D and XRCC2 were docked into the EM density using Dock and Rebuild in Phenix. ATP and Mg2+ were added, and the coordinates were iteratively real space refined using Phenix and manually modified in COOT
Data Acquisition
Detector TypeGATAN K2 SUMMIT (4k x 4k)
Electron Dose (electrons/Å**2)47
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1500
Maximum Defocus (nm)3500
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification130000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
IMAGE ACQUISITIONEPU2.10
CTF CORRECTIONCTFFIND4
MODEL FITTINGPHENIX1.2
MODEL REFINEMENTPHENIX1.2
MODEL REFINEMENTCoot0.9.8.7
INITIAL EULER ASSIGNMENTRELION4.0
FINAL EULER ASSIGNMENTRELION4.0
CLASSIFICATIONRELION4
RECONSTRUCTIONRELION4.0
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION4528940