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Structure of the human clamp loader (Replication Factor C, RFC) bound to the sliding clamp (Proliferating Cell Nuclear Antigen, PCNA)
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 20.0978 f_angle_d 0.8131 f_chiral_restr 0.0515 f_bond_d 0.0083 f_plane_restr 0.0049
Sample Human Replication factor C (RFC) complex bound to the sliding clamp Proliferating cell nuclear antigen (PCNA)
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 193934 Reported Resolution (Å) 3.4 Resolution Method FSC 0.143 CUT-OFF Other Details Multi-body refinement was used to generate 2 reconstructions that were combined Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol OTHER Refinement Target Overall B Value Fitting Procedure Details Initial local fitting was peformed using UCSF Chimera, followed by manual model adjustment, then refinement in PHENIX.
Data Acquisition Detector Type GATAN K3 (6k x 4k) GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 40.3 45
Imaging Experiment 1 2 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS FEI TITAN KRIOS Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 2.7 Imaging Mode BRIGHT FIELD BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN FIELD EMISSION GUN Acceleration Voltage (kV) 300 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cisTEM 1.0.0 IMAGE ACQUISITION SerialEM MODEL FITTING UCSF Chimera MODEL REFINEMENT PHENIX INITIAL EULER ASSIGNMENT cisTEM FINAL EULER ASSIGNMENT RELION 3.0.2 CLASSIFICATION RELION 3.0.2 RECONSTRUCTION RELION 3.0.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION