1C2X

5S RRNA STRUCTURE FITTED TO A CRYO-ELECTRON MICROSCOPIC MAP AT 7.5 ANGSTROMS RESOLUTION

ELECTRON MICROSCOPY

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Sample
50S Ribosomal Subunit

Specimen Preparation
Sample Aggregation State	PARTICLE

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles	16000
Reported Resolution (Å)	7.5
Resolution Method	FSC 3 SIGMA CUT-OFF
Other Details
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1 (1CSV, 1CSW)
Refinement Space	REAL
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details	DETAILS--THIS FILE HAS BEEN GENERATED BY THE USE OF ALL RELEVANT BIOCHEMICAL CONSTRAINTS AND THE CONSTRAINTS GIVEN BY THE ELECTRON DENSITY CONTOUR OF THE RIBOSOME, WHICH WAS DERIVED FROM THE CRYO-ELECTRON MICROSCOPIC RECONSTRUCTION. THIS FILE IS PART OF A SET OF ALL THREE RIBONUCLEIC ACID CHAINS OF THE RIBOSOME TOGETHER WITH A NUMBER OF RIBOSOMAL PROTEINS WHICH ARE ALSO DEPOSITED WITH THE PDB DATA BANK. THE ATOMIC COORDINATES OF ALL THESE RIBOSOMAL COMPONENTS REFLECT THEIR POSITIONS IN THE 70S RIBOSOME.

Data Acquisition
Detector Type	GENERIC FILM
Electron Dose (electrons/Å**2)

Imaging Experiment	1
Date of Experiment
Temperature (Kelvin)
Microscope Model	FEI/PHILIPS CM200FEG
Minimum Defocus (nm)	1000
Maximum Defocus (nm)	2000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS
Imaging Mode	BRIGHT FIELD
Specimen Holder Model	GATAN LIQUID NITROGEN
Nominal Magnification	38000
Calibrated Magnification
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	200
Imaging Details	from Structure 1999 citation

EM Software
Task	Software Package	Version
CTF CORRECTION	IMAGIC	5