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Structure of the C-terminal protease CtpA-LbcA complex of Pseudomonas aeruginosa
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7RQH experimental model PDB 7RQF
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 3.692 f_angle_d 0.456 f_chiral_restr 0.04 f_plane_restr 0.003 f_bond_d 0.002
Sample CtpA-LbcA complex of Pseudomonas aeruginosa
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 971786 Reported Resolution (Å) 3.55 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7RQH, 7RQF) Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value 63.15 Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 66
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1300 Maximum Defocus (nm) 1800 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 105000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 2.8 IMAGE ACQUISITION SerialEM CTF CORRECTION CTFFIND 4 MODEL FITTING UCSF Chimera 1.14 INITIAL EULER ASSIGNMENT cryoSPARC 2.8 FINAL EULER ASSIGNMENT cryoSPARC 2.8 CLASSIFICATION cryoSPARC 2.8 RECONSTRUCTION cryoSPARC 2.8 MODEL REFINEMENT PHENIX 4788
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2090314