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Coordinates of 16S and 23S rRNAs fitted into the cryo-EM map of a pretranslocation complex
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2AVY experimental model PDB 2AW4
Sample E. coli 70S ribosome bound with 3 tRNAs
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details Rapid freezing in liquid ethane
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 52181 Reported Resolution (Å) 10 Resolution Method Other Details SPIDER package Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (2AVY, 2AW4) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target cross-correlation coefficient, real-space R factor Overall B Value Fitting Procedure Details METHOD--Auto REFINEMENT PROTOCOL--multi-rigid body, real-space refinement
Data Acquisition Detector Type KODAK SO-163 FILM Electron Dose (electrons/Å**2) 20
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) 93 Microscope Model FEI TECNAI F20 Minimum Defocus (nm) 2000 Maximum Defocus (nm) 4000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 50000 Calibrated Magnification 49696 Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version MODEL FITTING RSRef RECONSTRUCTION SPIDER
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details CTF correction of 3D map