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Cryo-EM structure of the cellular negative regulator TFS4 bound to the archaeal RNA polymerase
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7OK0
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 4.529 f_angle_d 0.489 f_chiral_restr 0.045 f_plane_restr 0.004 f_bond_d 0.003
Sample TFS4 bound to the RNA polymerase
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 350682 Reported Resolution (Å) 2.61 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7OK0) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target CC Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 45.2
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2500 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 PARTICLE SELECTION RELION 3.0 IMAGE ACQUISITION SerialEM CTF CORRECTION Gctf MODEL FITTING PHENIX 1.15.2 INITIAL EULER ASSIGNMENT RELION 3.0 FINAL EULER ASSIGNMENT RELION 3.0 CLASSIFICATION RELION 3.0 RECONSTRUCTION RELION 3.0 MODEL REFINEMENT PHENIX 1.19.2 MODEL REFINEMENT Coot 0.8.9.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1161535