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RNA polymerase II pre-initiation complex with the distal +1 nucleosome (PIC-Nuc18W)
Sample RNA polymerase II pre-initiation complex with the distal +1 nucleosome Sample Components General transcription factor IIH Mammalian RNA polymerase II Nucleosome (protein) Nucleosome (DNA) General transcription factor IIB TATA-box binding protein General transcription factor IIF General transcription factor IIA General transcription factor IIE
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 188832 Reported Resolution (Å) 4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 41.58
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 500 Maximum Defocus (nm) 1500 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 Warp 1.0.9 IMAGE ACQUISITION SerialEM 4.0 CTF CORRECTION Warp 1.0.9 MODEL FITTING UCSF Chimera INITIAL EULER ASSIGNMENT cryoSPARC 3.2.0 FINAL EULER ASSIGNMENT RELION 3.1 RECONSTRUCTION RELION 3.1 MODEL REFINEMENT ISOLDE 1.3 MODEL REFINEMENT PHENIX 1.19.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 4667603