7CGY

Human DMC1 Q244M mutant of the post-synaptic complexes


ELECTRON MICROSCOPY
Sample
DMC1Q244M-dsDNA filament
Sample Components
DMC1 Q244M mutant
homologous double strand DNA
Specimen Preparation
Sample Aggregation StateFILAMENT
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification DetailsThe grids were blotted for 1 sec at 22 degree C with 100% relative humidity and plunge-frozen in liquid ethane cooled by liquid nitrogen using a Vitro ...The grids were blotted for 1 sec at 22 degree C with 100% relative humidity and plunge-frozen in liquid ethane cooled by liquid nitrogen using a Vitrobot Mark IV (Thermo Fisher).
3D Reconstruction
Reconstruction MethodHELICAL
Number of Particles232018
Reported Resolution (Å)3.2
Resolution MethodFSC 0.143 CUT-OFF
Other Details
Refinement Type
Symmetry TypeHELICAL
Axial SymmetryC1
Axial Rise16
Angular Rotation55.93
Map-Model Fitting and Refinement
Id1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details
Data Acquisition
Detector TypeGATAN K2 QUANTUM (4k x 4k)
Electron Dose (electrons/Å**2)50
Imaging Experiment1
Date of Experiment
Temperature (Kelvin)
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)
Maximum Defocus (nm)
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification165000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
PARTICLE SELECTIONRELION3.0
IMAGE ACQUISITIONEPU2.2.0
CTF CORRECTIONRELION3.0
MODEL FITTINGPHENIX1.14
MODEL REFINEMENTCoot0.8.9.2
MODEL REFINEMENTRosetta3.9
RECONSTRUCTIONRELION3.0
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION643100Filaments were manually picked, and segments were extracted using a box size of 384 pixel and an inter-box distance of ~10% of the box length.