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Cryo-EM structure of CLOCK-BMAL1 bound to the native Por enhancer nucleosome (map 2, additional 3D classification and flexible refinement)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4F3L experimental model PDB 4H10 experimental model PDB 6T93
Sample CLOCK-BMAL1 bound to a nucleosome at SHL -6.2 Sample Components Nucleosome core particle Histone octamer Nucleosomal DNA CLOCK-BMAL1 heterodimer
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 14988 Reported Resolution (Å) 4.9 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (4F3L, 4H10, 6T93) Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 1800 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version MODEL FITTING Coot MODEL FITTING ISOLDE MODEL REFINEMENT RosettaEM MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE