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 1ZO1 | pdb_00001zo1

IF2, IF1, and tRNA fitted to cryo-EM data OF E. COLI 70S initiation complex


ELECTRON MICROSCOPY

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1G7T 
experimental modelPDB 1HRO 
Sample
70S INITIATION COMPLEX
Specimen Preparation
Sample Aggregation StatePARTICLE
Vitrification InstrumentFEI VITROBOT MARK I
Cryogen NameETHANE
Sample Vitrification DetailsHOLEY CARBON GRID AT 20C FLASH FROZEN INTO LIQUID ETHAN
3D Reconstruction
Reconstruction MethodSINGLE PARTICLE
Number of Particles20283
Reported Resolution (Å)13.8
Resolution MethodFSC 0.5 CUT-OFF
Other Detailsresolution 13.8 ANGSTROMS (FSC=0.5) and 8.6 ANGSTROMS (3sigma)
Refinement Type
Symmetry TypePOINT
Point SymmetryC1
Map-Model Fitting and Refinement
Id1 (1G7T, 1HRO)
Refinement SpaceREAL
Refinement ProtocolRIGID BODY FIT
Refinement TargetBEST FIT USING RSREF
Overall B Value
Fitting Procedure
DetailsMETHOD--COORDINATE FILES WERE FITTED TO THE E. COLI TRANSLATION INITIATION COMPLEX MAP (EMBL-EMD 3525). REFINEMENT PROTOCOL--RIGID BODY FIT OF DOMAIN ...METHOD--COORDINATE FILES WERE FITTED TO THE E. COLI TRANSLATION INITIATION COMPLEX MAP (EMBL-EMD 3525). REFINEMENT PROTOCOL--RIGID BODY FIT OF DOMAINS I-V OF IF2, RIGID BODY FIT OF IF1 AND FMET-TRNA
Data Acquisition
Detector TypeKODAK SO-163 FILM
Electron Dose (electrons/Å**2)
Imaging Experiment1
Date of Experiment2004-01-01
Temperature (Kelvin)100
Microscope ModelFEI TECNAI F20
Minimum Defocus (nm)-930
Maximum Defocus (nm)-3930
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS2
Imaging ModeBRIGHT FIELD
Specimen Holder Model
Nominal Magnification39000
Calibrated Magnification
SourceFIELD EMISSION GUN
Acceleration Voltage (kV)200
Imaging DetailsLOW DOSE MODE
Image Processing
CTF Correction TypeCTF Correction DetailsNumber of Particles SelectedParticle Selection Details
DEFOCUS GROUPS 0.93-3.93 UM