2OM7 | pdb_00002om7

Structural Basis for Interaction of the Ribosome with the Switch Regions of GTP-bound Elongation Factors

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	2J00
experimental model	PDB	1GIX
experimental model	PDB	2J01
experimental model	PDB	1FNM
experimental model	PDB	1YL3

Sample
complex of Thermus thermophilus 70S ribosomes and EF-G-GMPPNP
Sample Components
30S ribosomal protein S12
50S ribosomal protein L1
Elongation factor G
30S ribosomal protein S2

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument	FEI VITROBOT MARK I
Cryogen Name	ETHANE
Sample Vitrification Details

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	77038
Reported Resolution (Å)	7.3
Resolution Method
Other Details	The geometry of linkages between some residues in chains J, M and L are distorted. They were not resolved based on the data used for solving this structure.
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1 (2J00, 1GIX, 2J01, 1FNM, 1YL3)
Refinement Space
Refinement Protocol	RIGID BODY FIT
Refinement Target
Overall B Value
Fitting Procedure
Details	METHOD--Rigid Body

Data Acquisition
Detector Type	KODAK SO-163 FILM
Electron Dose (electrons/Å**2)	19

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI TECNAI F30
Minimum Defocus (nm)	800
Maximum Defocus (nm)	4000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	39000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	300
Imaging Details

EM Software
Task	Software Package	Version
MODEL FITTING	Situs
RECONSTRUCTION	SPIDER

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
	defocus groups