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Cryo-EM structure of the E. coli ArnA hexamer
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 9W9H experimental model PDB 4YJE
Sample Hexameric complex of ArnA
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 67122 Reported Resolution (Å) 3.23 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry D3
Map-Model Fitting and Refinement Id 1 (9V5H) Refinement Space REAL Refinement Protocol BACKBONE TRACE Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 61.6
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 1600 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 105000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC v4.7.1 CTF CORRECTION cryoSPARC v4.7.1 MODEL FITTING PHENIX IMAGE ACQUISITION EPU INITIAL EULER ASSIGNMENT cryoSPARC v4.7.1 FINAL EULER ASSIGNMENT cryoSPARC v4.7.1 CLASSIFICATION cryoSPARC RECONSTRUCTION cryoSPARC v4.7.1 MODEL REFINEMENT PHENIX MODEL REFINEMENT Coot
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1811803