2YNJ

GroEL at sub-nanometer resolution by Constrained Single Particle Tomography


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 3E76 
Sample
GROEL
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK IV
Cryogen NameETHANE
Sample Vitrification Details
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles10000
Reported Resolution (Å)8.4
Resolution Method
Other DetailsSUBMISSION BASED ON EXPERIMENTAL DATA FROM EMDB EMD-2221. (DEPOSITION ID: 11174).
Refinement Type
Symmetry TypePOINT
Point SymmetryD7
Map-Model Fitting and Refinement
Id1 (3E76)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement TargetCross-correlation coefficient
Overall B Value
Fitting Procedure
DetailsMETHOD--RIGID BODY
Data Acquisition
Detector TypeGENERIC CCD
Electron Dose (electrons/Å**2)25
Imaging Experiment1
Date of Experiment2011-10-07
Temperature (Kelvin)80
Microscope ModelFEI TITAN KRIOS
Minimum Defocus (nm)2000
Maximum Defocus (nm)3000
Minimum Tilt Angle (degrees)-20
Maximum Tilt Angle (degrees)
Nominal CS2.7
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification47000
Calibrated Magnification47000
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)80
Imaging DetailsTHE TOTAL DOSE OF 25 (ELECTRONS PER SQUARE ANGSTROM) WAS FRACTIONATED EVENLY ACROSS 11 TILTED PROJECTIONS TAKEN BETWEEN 0 AND -20 DEGREES TILT (EVERY 2 DEGREES).
EM Software
TaskSoftware PackageVersion
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONFREALIGN
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
DEFOCUS VALUES WERE ASSIGNED TO EACH PARTICLE PROJECTION BASED ON THE DEFOCUS AT THE UNTILTED PLANE OF EACH TILT- SERIES AND A CORRECTION ACCORDING TO THE RELATIVE HEIGHT OF EACH PARTICLE. TO THIS PLANE