3JAJ

Structure of the engaged state of the mammalian SRP-ribosome complex


ELECTRON MICROSCOPY Experimental Data



EM Sample
Sample Vitrification Details 3 uL of sample was incubated on the grid for 30 seconds, blotted for 3 seconds, then flash-frozen in liquid ethane (FEI VITROBOT MARK IV).
Sample Aggregation State PARTICLE
Sample Reconstruction Method SINGLE PARTICLE
Name of Sample Engaged ribosome SRP complex
EM Data Acquisition
Date of Experiment 2014-06-16
Temperature (Kelvin) --
Microscope Model FEI TITAN KRIOS
Detector Type FEI FALCON II (4k x 4k)
Minimum Defocus (nm) 1000.0
Maximum Defocus (nm) 3500.0
Minimum Tilt Angle (degrees) --
Maximum Tilt Angle (degrees) --
Nominal CS 2.7
Imaging Mode BRIGHT FIELD
Electron Dose (electrons per Å**-2) 27.0
Illumination Mode FLOOD BEAM
Nominal Magnification 59000
Calibrated Magnification --
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 300
Imaging Details --
3D Reconstruction
Software Package(s) RELION
Reconstruction Method(s) --
EM Image Reconstruction Statistics
Number of Particles 52061
Other Details gold-standard
Effective Resolution 3.75
EM Map-Model Fitting and Refinement
Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Fitting Software
RECIPROCAL -- R-factor -77.0 -- --
REAL RIGID BODY FIT -- -- -- --