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Close-ring hexamer of the substrate-bound Lon protease with an S678A mutation
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7FID
Sample Close-ring hexamer of MtaLon-S678A in a substrate-engaged state Sample Components alpha-S1-casein Close-ring hexamer of Lon protease
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 207760 Reported Resolution (Å) 3.4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (7FID) Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 59
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1400 Maximum Defocus (nm) 2200 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 81000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION EPU 2.10 CTF CORRECTION cryoSPARC 3.2 MODEL FITTING UCSF ChimeraX 1.2 INITIAL EULER ASSIGNMENT cryoSPARC 3.2 FINAL EULER ASSIGNMENT cryoSPARC 3.2 RECONSTRUCTION cryoSPARC 3.2 MODEL REFINEMENT PHENIX 1.18.2_3874 MODEL REFINEMENT Coot 0.9.6
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING ONLY 1756270