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Cryo EM structure of glutamine synthetase from Brucella melitensis
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 9.021 f_angle_d 0.383 f_chiral_restr 0.037 f_plane_restr 0.003 f_bond_d 0.002
Sample Dodecameric complex of glutamine synthetase
Specimen Preparation Sample Aggregation State 2D ARRAY Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Embedding Material vitreous ice Embedding Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 71284 Reported Resolution (Å) 3.28 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type 3D CRYSTAL
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON I (4k x 4k) Electron Dose (electrons/Å**2) 60
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS Minimum Defocus (nm) 500 Maximum Defocus (nm) 1600 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS Imaging Mode 4D-STEM Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 100000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 5.0 MODEL REFINEMENT PHENIX 2.0_5936 CTF CORRECTION cryoSPARC 5.0 INITIAL EULER ASSIGNMENT cryoSPARC 5.0 CLASSIFICATION cryoSPARC 5.0 RECONSTRUCTION cryoSPARC 5.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION