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Cryo-EM structure of a tri-heme cytochrome-associated RC-LH1 complex from a marine photoheterotrophic bacterium, purified with magnesium-free solutions.
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 14.5863 f_angle_d 0.5943 f_chiral_restr 0.0348 f_plane_restr 0.0045 f_bond_d 0.0025
Sample tri-heme cytochrome-associated RC-LH1 complex
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 1106552 Reported Resolution (Å) 2.7 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1500 Maximum Defocus (nm) 2500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 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 CTF CORRECTION cryoSPARC 4.2.1 INITIAL EULER ASSIGNMENT cryoSPARC 4.2.1 FINAL EULER ASSIGNMENT cryoSPARC 4.2.1 CLASSIFICATION cryoSPARC 4.2.1 RECONSTRUCTION cryoSPARC 4.2.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION