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Core of mammalian 80S pre-ribosome in complex with tRNAs fitted to a 9.8A cryo-EM map: classic PRE state 1
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2WDK experimental model PDB 2XZM experimental model PDB 3O58
Sample CORE OF MAMMALIAN 80S PRE-RIBOSOME IN COMPLEX WITH TRNAS
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK I Cryogen Name ETHANE Sample Vitrification Details Ethane / Vitrobot (FEI)
flash-frozen in liquid ethane
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 30448 Reported Resolution (Å) 9.8 Resolution Method Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (2WDK, 2XZM, 3O58) 2 3 Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details METHOD--rigid body REFINEMENT PROTOCOL--rigid body DETAILS--40S DETAILS--60S DETAILS--tRNA
Data Acquisition Detector Type KODAK SO-163 FILM Electron Dose (electrons/Å**2) 20
Imaging Experiment 1 Date of Experiment 2006-10-17 Temperature (Kelvin) 77 Microscope Model FEI POLARA 300 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 39000 Calibrated Magnification 65520 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL FITTING UCSF Chimera RECONSTRUCTION SPIDER
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