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CryoEM structure of a catalytically inactive CXC Chemokine-degrading protease SpyCEP from Streptococcus pyogenes complexed with an anti-PA-domain monoclonal antibody
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model AlphaFold
Sample SpyCEP complexed with 3F2G10
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 660420 Reported Resolution (Å) 3.07 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 FLEXIBLE FIT Refinement Target Overall B Value 129.9 Fitting Procedure Details Flexible fitting all performed in ISOLDE
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 40
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS Minimum Defocus (nm) 1000 Maximum Defocus (nm) 2500 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 79000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC CTF CORRECTION cryoSPARC MODEL FITTING ISOLDE CLASSIFICATION cryoSPARC RECONSTRUCTION cryoSPARC MODEL REFINEMENT ISOLDE
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1351301