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Structure of the yeast 26S proteasome lid sub-complex
ELECTRON MICROSCOPY
Sample
Recombinant yeast 26S proteasome lid complex
Sample Components
26S proteasome lid sub-complex
Specimen Preparation
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. Ea ...
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
Point Symmetry
C1
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/Å**2)
43.8
Imaging Experiment
1
Date of Experiment
2015-02-10
Temperature (Kelvin)
87.5
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.