3CAU

D7 symmetrized structure of unliganded GroEL at 4.2 Angstrom resolution by cryoEM


ELECTRON MICROSCOPY
Sample
GroEL
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK I
Cryogen NameETHANE
Sample Vitrification DetailsETHANE. Vitrobot, 2sec blot
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles20401
Reported Resolution (Å)4.2
Resolution Method
Other DetailsD7 symmetry, This entry contains CA atom only
Refinement Type
Symmetry TypePOINT
Point SymmetryD7
Data Acquisition
Detector TypeKODAK SO-163 FILM
Electron Dose (electrons/Å**2)36
Imaging Experiment1
Date of Experiment2005-01-01
Temperature (Kelvin)4
Microscope ModelJEOL 3200FS
Minimum Defocus (nm)900
Maximum Defocus (nm)2300
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS1.6
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification60000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)300
Imaging Details
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
per micrograph