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Escherichia coli RNA polymerase unwinding intermediate (I1b) at the lambda PR promoter
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 13.959 f_angle_d 0.513 f_chiral_restr 0.041 f_bond_d 0.004 f_plane_restr 0.004
Sample Escherichia coli RNA polymerase unwinding intermediate (I1b) at the lambda PR promoter
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument SPOTITON Cryogen Name ETHANE Sample Vitrification Details CHAPSO was added (from 80 mM stock) to 8 mM final in each sample just prior to spray mixing.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 153655 Reported Resolution (Å) 2.9 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 60
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 2500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details Please see publication for details.
EM Software Task Software Package Version IMAGE ACQUISITION Leginon CTF CORRECTION cryoSPARC 3.2.0 MODEL REFINEMENT PHENIX CLASSIFICATION cryoSPARC 3.2.0 RECONSTRUCTION cryoSPARC 3.2.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION