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dsDNA in the central channel of the bacteriophage P74-26 neck
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model Other
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 19306 Reported Resolution (Å) 4.54 Resolution Method FSC 0.143 CUT-OFF Other Details FSC was calculated inside the provided mask, which only covers the lumen of the Neck channel Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 49.0571
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 500 Maximum Defocus (nm) 1500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 81000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.4.0 PARTICLE SELECTION cryoSPARC 4.4.0 PARTICLE SELECTION Topaz 0.2.4 CTF CORRECTION cryoSPARC 4.1.0 CTF CORRECTION cryoSPARC 4.4.1 MODEL FITTING Coot MODEL FITTING ISOLDE MODEL FITTING UCSF ChimeraX MODEL REFINEMENT PHENIX 1.21.2 INITIAL EULER ASSIGNMENT cryoSPARC 4.4.1 FINAL EULER ASSIGNMENT cryoSPARC 4.6.2 CLASSIFICATION cryoSPARC 4.6.2 RECONSTRUCTION cryoSPARC 4.6.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION