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Structures of class II bacterial transcription complexes
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4YLP
Sample Class II transcription complex Sample Components DNA-directed RNA polymerase Transcriptional activator RamA and pmicF promoter DNAs
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 74282 Reported Resolution (Å) 4.5 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (4YLP) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON III (4k x 4k) Electron Dose (electrons/Å**2) 79.1
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) Maximum Defocus (nm) 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 75000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version CTF CORRECTION Gctf MODEL FITTING UCSF Chimera INITIAL EULER ASSIGNMENT RELION FINAL EULER ASSIGNMENT RELION MODEL REFINEMENT Coot MODEL REFINEMENT PHENIX MODEL REFINEMENT REFMAC
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 774955