ELECTRON MICROSCOPY

Sample

Arabidopsis DDM1 bound to nucleosome (H2A.W, H2B, H3.3, H4, with 147 bp DNA)

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument LEICA EM GP
Cryogen Name ETHANE
Sample Vitrification Details Blotted for 2.5 seconds before plunging.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 215066
Reported Resolution (Å) 3.2
Resolution Method FSC 0.143 CUT-OFF
Other Details ?
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol ?
Refinement Target Correlation coefficient
Overall B Value 57.8
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K3 BIOQUANTUM (6k x 4k)
Electron Dose (electrons/Å2) 71.2
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model TFS KRIOS
Minimum Defocus (nm) 1000
Maximum Defocus (nm) 2200
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 81000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION Warp 1.0.9
IMAGE ACQUISITION EPU 2.10.0.5
CTF CORRECTION Warp 1.0.9
MODEL FITTING Coot 0.9.2-pre
MODEL REFINEMENT PHENIX 1.19.2-4158-000
INITIAL EULER ASSIGNMENT cryoSPARC 3.0.2+210831
FINAL EULER ASSIGNMENT cryoSPARC 3.0.2+210831
CLASSIFICATION cryoSPARC 3.0.2+210831
RECONSTRUCTION cryoSPARC 3.0.2+210831
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING ONLY ?
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