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 3KTT | pdb_00003ktt

Atomic model of bovine TRiC CCT2(beta) subunit derived from a 4.0 Angstrom cryo-EM map


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
in silico modelHomology model
Sample
CCT2(beta) subunit in the both-ring closed bovine TRiC complex
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification Instrument
Cryogen NameETHANE
Sample Vitrification Detailsvitrification using ethane as cryogen
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles101000
Reported Resolution (Å)4
Resolution Method
Other DetailsSingle particle 3D reconstruction using EMAN1.8+ with our recently developed 2-D fast rotation matching method (FRM2D) for the image alignment.
Refinement Type
Symmetry TypePOINT
Point SymmetryC2
Map-Model Fitting and Refinement
Id1
Refinement SpaceREAL
Refinement ProtocolFLEXIBLE FIT
Refinement Target
Overall B Value
Fitting Procedure
DetailsMETHOD--Local refinement, Flexible fitting REFINEMENT PROTOCOL--Local refinement, Flexible fitting
Data Acquisition
Detector TypeKODAK SO-163 FILM
Electron Dose (electrons/Å**2)18
Imaging Experiment1
Date of Experiment2007-08-01
Temperature (Kelvin)101
Microscope ModelJEOL 3200FSC
Minimum Defocus (nm)1000
Maximum Defocus (nm)3000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS4.1
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification50000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
EM Software
TaskSoftware PackageVersion
MODEL FITTINGCoot
MODEL FITTINGMODELLER
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONEMAN
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
FSC at 0.5 cut-off