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Structure of right-handed protein cage consisting of 24 eleven-membered ring proteins held together by gold (I) bridges.
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4V4F
Sample RH TRAP protein cage
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details 3.0 s blotting time
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 94388 Reported Resolution (Å) 3.7 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (4V4F, 4V4F, 4V4F, 4V4F, 4V4F, 4V4F, 4V4F, 4V4F, 4V4F, 4V4F, 4V4F) Refinement Space REAL Refinement Protocol OTHER Refinement Target gradient-driven minimization of combined map and restraints target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON II (4k x 4k) Electron Dose (electrons/Å**2) 40
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) Maximum Defocus (nm) Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version MODEL FITTING PHENIX CLASSIFICATION RELION MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION