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The cryo-EM structure of C. crescentus DriD-ssDNA-RNAP-Sigma73-didA promoter transcription activation complex
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7YE1
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 15.811 f_angle_d 0.659 f_chiral_restr 0.043 f_plane_restr 0.006 f_bond_d 0.004
Sample The cryo-EM structure of C. crescentus DriD-ssDNA-RNAP-Sigma73-didA promoter transcription activation complex
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 23172 Reported Resolution (Å) 3.98 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7ye1) 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) 56.6
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 800 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 cryoSPARC 4.2.1 IMAGE ACQUISITION DigitalMicrograph 3.51 CTF CORRECTION cryoSPARC 4.2.1 MODEL FITTING Coot 9.8.96 MODEL REFINEMENT PHENIX 1.21.2-5419 INITIAL EULER ASSIGNMENT cryoSPARC 4.2.1 FINAL EULER ASSIGNMENT cryoSPARC 4.5.3 RECONSTRUCTION cryoSPARC 4.5.3
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION