ELECTRON MICROSCOPY

Sample

Double occupied ring (DOR) of GroEL-UGT1A complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument FEI VITROBOT MARK IV
Cryogen Name ETHANE
Sample Vitrification Details 3 ul of 33 mg/ml GroEL-UGT1A was placed on Holey carbon Quanitifoil copper grids (300 mesh size R1.2/1.3) and blotted for 3 seconds (blot force =1)
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 1018943
Reported Resolution (Å) 2.7
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 RIGID BODY FIT
Refinement Target ?
Overall B Value 76.71
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type FEI FALCON III (4k x 4k)
Electron Dose (electrons/Å2) 40
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1200
Maximum Defocus (nm) 2000
Minimum Tilt Angle (degrees) ?
Maximum Tilt Angle (degrees) ?
Nominal CS ?
Imaging Mode BRIGHT FIELD
Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification ?
Calibrated Magnification ?
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details ?
Imaging Experiment
Task Software Package Version
PARTICLE SELECTION RELION 3.1
IMAGE ACQUISITION EPU ?
IMAGE ACQUISITION RELION 3.1
CTF CORRECTION CTFFIND 4.1
MODEL FITTING UCSF ChimeraX 1.2.5
INITIAL EULER ASSIGNMENT RELION 3.1
RECONSTRUCTION RELION 3.1
MODEL REFINEMENT PHENIX 1.19.2-4158
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
PHASE FLIPPING ONLY Using RELIONs own implementation of CTFFIND4.1 ? --Box 512 --ResMin 30 --ResMax 2 --dFMin 5000 --dFMax 50000 --FStep 250 --dAst 100