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E. coli DNA-directed RNA polymerase transcription elongation complex bound the unnatural dB-STP base pair in the active site
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6ALH
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 10.635 f_angle_d 0.561 f_chiral_restr 0.042 f_plane_restr 0.004 f_bond_d 0.002
Sample E. coli RNAP transcription elongation complex bound the unnatural dB-STP base pair in the active site
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 1326857 Reported Resolution (Å) 2.65 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6ALH) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 35
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2400 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification Calibrated Magnification 58140 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL REFINEMENT PHENIX 1.19.2_4158: RECONSTRUCTION cryoSPARC 4.2.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 3435744