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T. thermophilus 70S ribosome in complex with mRNA, tRNAs and EF-Tu.GDP.kirromycin ternary complex, fitted to a 6.4 A Cryo-EM map.
Sample Thermus thermophilus ribosome complexed with mRNA, tRNAs and EF-Tu
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK I Cryogen Name METHANE Sample Vitrification Details A Vitrobot was used to shock-freeze the sample in liquid methane.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 323688 Reported Resolution (Å) 6.4 Resolution Method Other Details The SPIDER software package was used. Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target best visual fit using the programs O, CHIMERA or PYMOL. Overall B Value Fitting Procedure Details REFINEMENT PROTOCOL--rigid body docking carried out with SPIDER or SITUS
software.
Data Acquisition Detector Type KODAK SO-163 FILM Electron Dose (electrons/Å**2) 23
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) 77 Microscope Model FEI POLARA 300 Minimum Defocus (nm) 1500 Maximum Defocus (nm) 4500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 39000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details CTF correction of each defocus group volume prior to back projection.