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E. coli 70S-RNAP expressome complex in NusG-coupled state (42 nt intervening mRNA)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4YBB experimental model PDB 6ALH
Sample E. coli 70S-RNAP expressome complex in coupled state (42 nt intervening mRNA) Sample Components 70S ribosome within the MF42-NusG expressome DNA-directed RNA polymerase within the MF42-NusG expressome synthetic mRNA and template DNA
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 34590 Reported Resolution (Å) 3.9 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (4YBB, 6ALH) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Correlation coefficient Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 42
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 700 Maximum Defocus (nm) 3500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION EPU CTF CORRECTION Gctf 0.56 MODEL FITTING UCSF Chimera MODEL REFINEMENT PHENIX 1.16 INITIAL EULER ASSIGNMENT RELION 3.0.4 FINAL EULER ASSIGNMENT RELION 3.0.4 RECONSTRUCTION RELION 3.0.4
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 314705