1PN8 | pdb_00001pn8

Coordinates of S12, L11 proteins and E-site tRNA from 70S crystal structure separately fitted into the Cryo-EM map of E.coli 70S.EF-G.GDPNP complex. The atomic coordinates originally from the E-site tRNA were fitted in the position of the hybrid P/E-site tRNA.

ELECTRON MICROSCOPY

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Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	1GIX
experimental model	PDB	1GIY

Sample
E.coli 70S ribosome
Sample Components
E-tRNA
30S ribosomal protein S12
50S ribosomal protein L11

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument
Cryogen Name	ETHANE
Sample Vitrification Details	Rapid-freezing in liquid ethane

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles
Reported Resolution (Å)	10.8
Resolution Method
Other Details	SPIDER package. Crystal Structure of Thermus Thermophilus 70S ribosome
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1 (1GIX, 1GIY)
Refinement Space	REAL
Refinement Protocol	OTHER
Refinement Target
Overall B Value
Fitting Procedure
Details	METHOD--Manual fitting in O

Data Acquisition
Detector Type	KODAK SO-163 FILM
Electron Dose (electrons/Å**2)	20

Imaging Experiment	1
Date of Experiment	2001-06-01
Temperature (Kelvin)	93
Microscope Model	FEI TECNAI F20
Minimum Defocus (nm)	1500
Maximum Defocus (nm)	4000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	50000
Calibrated Magnification	49696
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	200
Imaging Details

Image Processing
CTF Correction Type	CTF Correction Details	Number of Particles Selected	Particle Selection Details
	CTF correction of 3D-maps by Wiener filteration