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Head-on RNAP-RNAP Collision: 26 bp distance
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6RIP
Sample Head-On RNAP-RNAP Collision Elongation Complex: 26 base pairs inter-RNAP distance.
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument LEICA EM GP Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 219123 Reported Resolution (Å) 2.65 Resolution Method FSC 0.143 CUT-OFF Other Details Particles were symmetry expanded and then refined with a mask representative of one of the two complexes. Refinement Type Symmetry Type POINT Point Symmetry C2
Map-Model Fitting and Refinement Id 1 (6RIP, 6RIP, 6RIP, 6RIP, 6RIP, 6RIP, 6RIP, 6RIP) Refinement Space Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 48.79
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS 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 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.7.0 IMAGE ACQUISITION SerialEM CTF CORRECTION cryoSPARC 4.7.0 MODEL FITTING ISOLDE 1.10.0 MODEL FITTING Coot 0.8.7 MODEL REFINEMENT PHENIX "2.0_5936" INITIAL EULER ASSIGNMENT cryoSPARC 4.7.0 FINAL EULER ASSIGNMENT cryoSPARC 4.7.0 CLASSIFICATION cryoSPARC 4.7.0 RECONSTRUCTION cryoSPARC 4.7.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1801942