3JCP

Structure of yeast 26S proteasome in M2 state derived from Titan dataset


ELECTRON MICROSCOPY
Sample
yeast 26S proteasome in M2 state
Sample Components
26S proteasome
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles25151
Reported Resolution (Å)4.6
Resolution MethodFSC 0.143 CUT-OFF
Other DetailsThe particles were selected in RELION and manually checked. 3D classification and refinement were performed in RELION. Single particle--Applied symmet ...The particles were selected in RELION and manually checked. 3D classification and refinement were performed in RELION. Single particle--Applied symmetry: C1
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (4CR2)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement Target
Overall B Value
Fitting Procedure
DetailsREFINEMENT PROTOCOL--rigid body DETAILS--The domains were separately fitted in chimera and then manual checked in Coot. The final model is refined wi ...REFINEMENT PROTOCOL--rigid body DETAILS--The domains were separately fitted in chimera and then manual checked in Coot. The final model is refined with Phenix.
Data Acquisition
Detector TypeFEI FALCON II (4k x 4k)
Electron Dose (electrons/Å**2)
Imaging Experiment1
Date of Experiment2015-11-02
Temperature (Kelvin)100
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)1.5
Maximum Defocus (nm)2.5
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder ModelFEI TITAN KRIOS AUTOGRID HOLDER
Nominal Magnification75000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONRELION
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
Each micrographs