3B8K

Structure of the Truncated Human Dihydrolipoyl Acetyltransferase (E2)


ELECTRON MICROSCOPY
Sample
human tE2
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentHOMEMADE PLUNGER
Cryogen NameETHANE
Sample Vitrification Detailsflash freezing in liquid ethane
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles2432
Reported Resolution (Å)8.8
Resolution Method
Other DetailsOrientation determination and 3D reconstruction were performed using the IMIRS software package on multiprocessor MS Windows XP computer workstations. ...Orientation determination and 3D reconstruction were performed using the IMIRS software package on multiprocessor MS Windows XP computer workstations. The orientations were first estimated from the particle images in the far-from-focus micrographs and refined to about 30- resolution. These orientation parameters were then further refined using the particles in the close-to-focus micrographs.
Refinement Type
Symmetry TypePOINT
Point SymmetryI
Map-Model Fitting and Refinement
Id1 (1EAA)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement Targetbest fit using the program CHIMERA
Overall B Value30
Fitting Procedure
DetailsREFINEMENT PROTOCOL--rigid body
Data Acquisition
Detector TypeGATAN ULTRASCAN 4000 (4k x 4k)
Electron Dose (electrons/Å**2)12
Imaging Experiment1
Date of Experiment2003-10-01
Temperature (Kelvin)100
Microscope ModelJEOL 2010F
Minimum Defocus (nm)600
Maximum Defocus (nm)2100
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS1
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification69250
Calibrated Magnification69250
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging Details
EM Software
TaskSoftware PackageVersion
MODEL FITTINGUCSF Chimera
RECONSTRUCTIONIMIRS
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
CTF correction of each image