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Mycoplasma pneumoniae 70S ribosome in untreated cells
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7OOC experimental model PDB 7OOD experimental model PDB 4V7C experimental model PDB 3J9W
Sample cryo-electron tomograms of untreated Mycoplasma pneumoniae cells
Specimen Preparation Sample Aggregation State CELL Vitrification Instrument HOMEMADE PLUNGER Cryogen Name ETHANE-PROPANE Sample Vitrification Details back-side blotting for 2-3 second before plunging using a manual plunger without an environmental chamber
3D Reconstruction Reconstruction Method SUBTOMOGRAM AVERAGING Number of Particles 77539 Reported Resolution (Å) 3.5 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7OOC, 7OOD, 4V7C, 3J9W, 3J9W) Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 3.2
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1500 Maximum Defocus (nm) 3750 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 81000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL REFINEMENT Coot 0.9 MODEL REFINEMENT PHENIX 1.18
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION