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Structural of the filamentous Escherichia coli glutamine synthetase
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 2LGS
Sample Filamentous form of Ecoli glutamine synthetase
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 117242 Reported Resolution (Å) 2.94 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C6
Map-Model Fitting and Refinement Id 1 (2LGS) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 59.6
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 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 PARTICLE SELECTION cryoSPARC 3.2 IMAGE ACQUISITION EPU 1.2 CTF CORRECTION cryoSPARC 2.14 CTF CORRECTION cryoSPARC 3.2 MODEL FITTING PHENIX 1.18 MODEL REFINEMENT Coot 0.9.5 MODEL REFINEMENT PHENIX 1.18 INITIAL EULER ASSIGNMENT cryoSPARC 3.2 FINAL EULER ASSIGNMENT cryoSPARC 3.2 RECONSTRUCTION cryoSPARC 3.2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION