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holey carbon grid at 20C; flash frozen into liquid ethan
3D Reconstruction
Reconstruction Method
SINGLE PARTICLE
Number of Particles
15800
Reported Resolution (Å)
14
Resolution Method
Other Details
iterative refinement procedure as described in Quat. Rev. of Biophysics 33,
4 (2000), pp. 307-369
Refinement Type
Symmetry Type
POINT
Point Symmetry
C1
Map-Model Fitting and Refinement
Id
1 (1GQE, 1GIX, 1GIY)
Refinement Space
REAL
Refinement Protocol
RIGID BODY FIT
Refinement Target
best visual fit using the program O
Overall B Value
Fitting Procedure
Details
REFINEMENT PROTOCOL--rigid body fit of the 70S ribosome without individual
fitting of proteins or RNA fragments. Rigid body fit of three individual
...
REFINEMENT PROTOCOL--rigid body fit of the 70S ribosome without individual
fitting of proteins or RNA fragments. Rigid body fit of three individual
domains of release factor RF2 keeping the connectivity; linkers betweenn
domains defined based on temperature factors of crystal structure, conserved
Gly and Pro residues, proteolytic sites, and global domain architecture
Data Acquisition
Detector Type
KODAK SO-163 FILM
Electron Dose (electrons/Å**2)
10
Imaging Experiment
1
Date of Experiment
2001-09-06
Temperature (Kelvin)
100
Microscope Model
FEI/PHILIPS CM200FEG/ST
Minimum Defocus (nm)
500
Maximum Defocus (nm)
2900
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
2.1
Imaging Mode
BRIGHT FIELD
Specimen Holder Model
Nominal Magnification
50000
Calibrated Magnification
48000
Source
FIELD EMISSION GUN
Acceleration Voltage (kV)
200
Imaging Details
low dose mode
Image Processing
CTF Correction Type
CTF Correction Details
Number of Particles Selected
Particle Selection Details
phase flipping CTF correction of each particle as function of position in the micrograph