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Human MCM double hexamer bound to natural DNA duplex (polyAT/polyTA)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 3JA8
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 27.343 f_angle_d 0.974 f_chiral_restr 0.06 f_bond_d 0.013 f_plane_restr 0.005
Sample human Mini-chromosome maintenance complex Sample Components DNA replication licensing factor MCM 2/3/4/5/6/7 DNA
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 329847 Reported Resolution (Å) 2.59 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (3JA8) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 51.78
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1200 Maximum Defocus (nm) 2500 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 Gautomatch v0.56 IMAGE ACQUISITION EPU 2.10.0 CTF CORRECTION Gctf v1.18 MODEL FITTING UCSF Chimera MODEL FITTING Coot MODEL REFINEMENT PHENIX INITIAL EULER ASSIGNMENT cryoSPARC v3.0.1 FINAL EULER ASSIGNMENT cryoSPARC v3.0.1 RECONSTRUCTION cryoSPARC v3.0.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 808142