1RY1

Structure of the signal recognition particle interacting with the elongation-arrested ribosome

ELECTRON MICROSCOPY

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Sample
signal recognition particle interacting with elongation-arrested ribosome
Sample Components
signal recognition particle
80S ribosome nascent chain complex

Specimen Preparation
Sample Aggregation State	PARTICLE
Vitrification Instrument
Cryogen Name	ETHANE
Sample Vitrification Details	PLUNGED INTO ETHANE

3D Reconstruction
Reconstruction Method	SINGLE PARTICLE
Number of Particles
Reported Resolution (Å)	12
Resolution Method	FSC 0.5 CUT-OFF
Other Details	The chains M, N, O, P, Q and R are fragments of a double helical strand of RNA. The author maintains that some of the residues could not be modeled correctly due to limited resolution in this region.
Refinement Type
Symmetry Type	POINT
Point Symmetry	C1

Map-Model Fitting and Refinement
Id	1
Refinement Space
Refinement Protocol
Refinement Target
Overall B Value
Fitting Procedure
Details

Data Acquisition
Detector Type	KODAK SO-163 FILM
Electron Dose (electrons/Å**2)	10

Imaging Experiment	1
Date of Experiment	2000-01-01
Temperature (Kelvin)	95
Microscope Model	FEI TECNAI F20
Minimum Defocus (nm)	10000
Maximum Defocus (nm)	45000
Minimum Tilt Angle (degrees)
Maximum Tilt Angle (degrees)
Nominal CS	2
Imaging Mode	BRIGHT FIELD
Specimen Holder Model
Nominal Magnification	51000
Calibrated Magnification	52000
Source	FIELD EMISSION GUN
Acceleration Voltage (kV)	160
Imaging Details	SAMPLES WERE MAINTAINED AT LIQUID NITROGEN TEMPERATURES IN THE ELECTRON MICROSCOPE.

EM Software
Task	Software Package	Version
RECONSTRUCTION	SPIDER
RECONSTRUCTION	SPIDER