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Cryo-EM structure of Escherichia coli transcription initiation complex with GpA and pseudouridimycin (PUM)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4MEY
Sample Escherichia coli transcription initiation complex with GpA and pseudouridimycin (PUM)
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 46892 Reported Resolution (Å) 3.06 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (4MEY) Refinement Space Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 32.1
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TALOS ARCTICA Minimum Defocus (nm) 800 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 130000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.5.1 CTF CORRECTION cryoSPARC 4.5.1 MODEL FITTING UCSF Chimera 1.16 INITIAL EULER ASSIGNMENT cryoSPARC 4.5.1 FINAL EULER ASSIGNMENT cryoSPARC 4.5.1 CLASSIFICATION cryoSPARC 4.5.1 RECONSTRUCTION cryoSPARC 4.5.1 MODEL REFINEMENT PHENIX 1.21.1_5286
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE 209426