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Cryo-EM structure of Sulfolobus solfataricus ketol-acid reductoisomerase (Sso-KARI) with Mg2+ at pH7.5
Sample Sulfolobus solfataricus ketol-acid reductoisomerase (Sso-KARI) Dodecamer in complex with Mg2+ in pH7.5
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 34743 Reported Resolution (Å) 2.92 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value 123.03 Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON II (4k x 4k) Electron Dose (electrons/Å**2) 1.91
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TALOS ARCTICA Minimum Defocus (nm) Maximum Defocus (nm) 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) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cisTEM 1.0.0-beta CTF CORRECTION cisTEM 1.0.0-beta MODEL FITTING UCSF Chimera 1.13.1 MODEL FITTING Coot 0.8.9.1 MODEL REFINEMENT PHENIX dev-3339 INITIAL EULER ASSIGNMENT cisTEM 1.0.0-beta FINAL EULER ASSIGNMENT cisTEM 1.0.0-beta CLASSIFICATION cisTEM 1.0.0-beta RECONSTRUCTION cisTEM 1.0.0-beta
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING ONLY