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Cryo-EM structure of the human CPSF160-WDR33-CPSF30 complex bound to the PAS AAUAAA motif at 3.1 Angstrom resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6F9N
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 11.826 f_angle_d 0.968 f_chiral_restr 0.058 f_bond_d 0.01 f_plane_restr 0.006
Sample Human CPSF160-WDR33-CPSF30 heterotrimer bound to the AAUAAA motif of the Polyadenylation Signal Sample Components Human CPSF160-WDR33-CPSF30 heterotrimer AAUAAA motif of the Polyadenylation Signal
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE-PROPANE Sample Vitrification Details 15 seconds wait time prior to blotting
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 137000 Reported Resolution (Å) 3.07 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6F9N) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details phenix.real_space_refine
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 80
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1100 Maximum Defocus (nm) 2200 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 Calibrated Magnification 47259 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 2.1b1_cu8.0 IMAGE ACQUISITION SerialEM CTF CORRECTION RELION 2.1b1_cu8.0 MODEL FITTING Coot 0.8.8 MODEL REFINEMENT PHENIX 1.12-2829 INITIAL EULER ASSIGNMENT RELION 2.1b1_cu8.0 FINAL EULER ASSIGNMENT RELION 2.1b1_cu8.0 CLASSIFICATION RELION 2.1b1_cu8.0 RECONSTRUCTION RELION 2.1b1_cu8.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 263000