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Cryo-EM structure of yeast mitochondrial RNA polymerase partially-melted transcription initiation complex (PmIC)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 1I4W experimental model PDB 6EQR experimental model PDB 1QLN
Sample mitochondria DNA-dependent RNA polymerase pre-initiation complex Sample Components mitochondria DNA-dependent RNA polymerase pre-initiation complex DNA
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument LEICA EM GP Cryogen Name ETHANE Sample Vitrification Details 5 uL sample; back blotting for 12 -14 second
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 152504 Reported Resolution (Å) 3.1 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (1I4W, 6EQR, 1QLN) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Coorelation coefficu=ient Overall B Value Fitting Procedure Details Realspace refinement
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 65
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 7000 Maximum Defocus (nm) 22000 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 165000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.08 IMAGE ACQUISITION EPU 2.5 MODEL FITTING Coot INITIAL EULER ASSIGNMENT RELION 3.08 FINAL EULER ASSIGNMENT RELION 3.08 CLASSIFICATION RELION 3.08 RECONSTRUCTION RELION 3.08 MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE