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Cryo-EM structure of the Chromera velia PSI supercomplex at 1.84 Angstrom resolution
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model SwissModel
Sample PSI super complex from Chrome velia
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details Blotting time 2.5 sec.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 532822 Reported Resolution (Å) 1.84 Resolution Method FSC 0.143 CUT-OFF Other Details The particles from both datasets were converted into star files using csparc2star from the PyEM suite for further processing in RELION v5.0.0b. Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target CCC in ChimeraX Overall B Value 21.6 Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 40
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 2100 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 165000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC MODEL REFINEMENT PHENIX RECONSTRUCTION RELION
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION CTF estimation were performed on the raw data in cryoSPARC's Live session 5807142 Blob picking was selected initially.