ELECTRON MICROSCOPY

Sample

Recombinant yeast 26S proteasome lid complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details 4 uL sample was applied to the grid, blotted for 2 seconds at 4 degrees C, and plunged into liquid ethane using a manual plunger.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 109396
Reported Resolution (Å) 3.5
Resolution Method FSC 0.143 CUT-OFF
Other Details 3D classification was performed to identify the best 109,396 particles from an initial dataset of 254,112. An ensemble of five models is provided. Each model is an approximately equivalent representation of the structure. (Single particle details: Image pre-processing was performed using Appion. 3D classification and reconstruction was performed with RELION.) (Single particle--Applied symmetry: C1)
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space ?
Refinement Protocol ?
Refinement Target ?
Overall B Value ?
Fitting Procedure ?
Details ?
Data Acquisition
Detector Type GATAN K2 (4k x 4k)
Electron Dose (electrons/Å2) 43.8
Imaging Experiment
Date of Experiment 2015-02-10
Temprature (Kelvin)
Microscope Model FEI TITAN KRIOS
Minimum Defocus (nm) 1600
Maximum Defocus (nm) 3200
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 22500
Calibrated Magnification 38168
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details Micrograph was collected in super-resolution mode with a total frame count of 38 and total exposure time of 7.6 seconds.
Imaging Experiment
Task Software Package Version
CTF CORRECTION CTFFIND 3
PARTICLE SELECTION FindEM ?
RECONSTRUCTION Appion ?
RECONSTRUCTION RELION ?
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. whole micrograph