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T4 bacteriophage primosome with single-strand DNA, State 3
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6QEM experimental model PDB 6N9U experimental model PDB 2AU3
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 11.635 f_angle_d 0.44 f_chiral_restr 0.039 f_plane_restr 0.003 f_bond_d 0.002
Sample Complex of T4 bacteriophage primosome including helicase gp41, primase gp61 and ssDNA/RNA hybrid
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 142027 Reported Resolution (Å) 3.5 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6QEM, 6N9U, 2AU3) Refinement Space REAL Refinement Protocol OTHER Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 66
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2000 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) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.1 IMAGE ACQUISITION SerialEM 3.8 CTF CORRECTION CTFFIND 4.1.10 MODEL FITTING PHENIX 1.20 MODEL REFINEMENT PHENIX 1.20 MODEL REFINEMENT Coot 0.9.6 INITIAL EULER ASSIGNMENT cryoSPARC 3.3.1 FINAL EULER ASSIGNMENT RELION 3.1 CLASSIFICATION RELION 3.1 RECONSTRUCTION RELION 3.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details NONE