ELECTRON MICROSCOPY

Sample

Ribosome-SecY complex

Specimen Preperation
Sample Aggregation State PARTICLE
Vitrification Instrument HOMEMADE PLUNGER
Cryogen Name ETHANE
Sample Vitrification Details The specimens were plunge frozen in liquid ethane at 4 degrees C at an RH of ~90-95%.
3D Reconstruction
Reconstruction Method SINGLE PARTICLE
Number of Particles 39000
Reported Resolution (Å) 9.6
Resolution Method ?
Other Details EMAN
Refinement Type
Symmetry Type POINT
Map-Model Fitting and Refinement
ID 1
Refinement Space REAL
Refinement Protocol RIGID BODY FIT
Refinement Target visual fit in O and Chimera
Overall B Value ?
Fitting Procedure ?
Details REFINEMENT PROTOCOL--rigid body, followed by manual rebuilding and extension of the loops
Data Acquisition
Detector Type KODAK SO-163 FILM
Electron Dose (electrons/Å2) 15
Imaging Experiment
Date of Experiment ?
Temprature (Kelvin)
Microscope Model FEI TECNAI F20
Minimum Defocus (nm) -700
Maximum Defocus (nm) -3000
Minimum Tilt Angle (degrees) 0
Maximum Tilt Angle (degrees) 0
Nominal CS 2.0
Imaging Mode BRIGHT FIELD
Specimen Holder Model ?
Nominal Magnification 50000
Calibrated Magnification 51000
Source FIELD EMISSION GUN
Acceleration Voltage (kV) 200
Imaging Details Gatan DH626 cold holder
Image Processing
CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details
. EMAN- phase flipping of particles form the same micrograph