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Coordinates of tmRNA, SmpB, EF-Tu and h44 fitted into Cryo-EM map of the 70S ribosome and tmRNA complex
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1K8H experimental model PDB 1B23 experimental model PDB 1N32
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument HOMEMADE PLUNGER Cryogen Name ETHANE Sample Vitrification Details Rapid-freezing in liquid ethane
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 27644 Reported Resolution (Å) 13 Resolution Method Other Details SPIDER package, This entry contains only C alpha and P atoms. Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (1K8H, 1B23, 1N32) 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) 15
Imaging Experiment 1 Date of Experiment 2003-08-01 Temperature (Kelvin) 93 Microscope Model FEI TECNAI F20 Minimum Defocus (nm) 3700 Maximum Defocus (nm) 1450 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 49000 Calibrated Magnification 52000 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 filtration