ELECTRON MICROSCOPY

Sample

Nucleosome core particle bound by PFV intasome post in the post catalytic state

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument LEICA EM CPC
Cryogen Name ETHANE
Sample Vitrification Details 1 min incubation 3.5s blot
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 177155
Reported Resolution (Å) 3.9
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 ?
Overall B Value ?
Fitting Procedure ?
Details The initial model was placed in the density using Chimera. Manual building was performed in Coot and final refinement was carried out using phenix.real_space_refine and namdinator. Additional restraints describing protein secondary structure, DNA base pairing and stacking were used in Phenix.
Data Acquisition
Detector Type FEI FALCON II (4k x 4k)
Electron Dose (electrons/Å2) 56
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1.5
Maximum Defocus (nm) 3.5
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 59000
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 1.3
IMAGE ACQUISITION EPU ?
CTF CORRECTION CTFFIND 1.4
MODEL FITTING Coot ?
INITIAL EULER ASSIGNMENT RELION 1.3
FINAL EULER ASSIGNMENT RELION 1.3
CLASSIFICATION RELION 1.3
RECONSTRUCTION RELION 1.3
MODEL REFINEMENT PHENIX ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING AND AMPLITUDE CORRECTION ?