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Outer membrane secretin pore of the type 3 secretion system of Shigella flexneri
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 15.536 f_angle_d 0.63 f_chiral_restr 0.047 f_bond_d 0.006 f_plane_restr 0.005
Sample Needle complex of the type 3 secretion system Sample Components Outer membrane secretin pore of the type 3 secretion system
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 69589 Reported Resolution (Å) 3.42 Resolution Method FSC 0.143 CUT-OFF Other Details Focused reconstruction obtained after partial signal subtraction. Refinement Type Symmetry Type POINT Point Symmetry C15
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value 72.8 Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON II (4k x 4k) Electron Dose (electrons/Å**2) 25
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1500 Maximum Defocus (nm) 4000 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 101179 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION EPU CTF CORRECTION CTFFIND 4.1.13 MODEL FITTING UCSF Chimera 1.15 INITIAL EULER ASSIGNMENT RELION 3.0 FINAL EULER ASSIGNMENT RELION 3.0 RECONSTRUCTION RELION 3.0 MODEL REFINEMENT PHENIX 1.18.2_3874
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION