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Cryo-EM structure of photosystem II C2S2M2L2 supercomplex from the green alga Chlorella ohadii
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7OUI experimental model PDB 8C29
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 18.354 f_angle_d 0.535 f_chiral_restr 0.062 f_plane_restr 0.006 f_bond_d 0.003
Sample Photosystem II supercomplex C2S2M2L2 Sample Components Photosystem II core complex (C2)
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 225372 Reported Resolution (Å) 2.95 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C2
Map-Model Fitting and Refinement Id 1 (7OUI, 8C29) Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 90
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS Minimum Defocus (nm) 500 Maximum Defocus (nm) 2000 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) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION Scipion 3.0 PARTICLE SELECTION Xmipp 3.0 IMAGE ACQUISITION EPU 3.3 CTF CORRECTION CTFFIND 4.1 MODEL FITTING Coot 0.9.8 MODEL REFINEMENT PHENIX 1.21.2_5419 INITIAL EULER ASSIGNMENT cryoSPARC 4.3.1. FINAL EULER ASSIGNMENT cryoSPARC 4.3.1. CLASSIFICATION RELION 3.1 RECONSTRUCTION cryoSPARC 4.3.1.
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION