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CryoEM structure of CD20 in complex with engineered conformationally rigid Rituximab.4DS Fab
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6VJA
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 13.676 f_angle_d 0.674 f_chiral_restr 0.044 f_plane_restr 0.008 f_bond_d 0.003
Sample CD20 in complex with Rituximab.4DS Fab Sample Components CD20 Rituximab.4DS Fab
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 375469 Reported Resolution (Å) 2.6 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C2
Map-Model Fitting and Refinement Id 1 (6VJA) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 44
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 1800 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification 165000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC MODEL FITTING UCSF ChimeraX MODEL FITTING ISOLDE MODEL REFINEMENT PHENIX 1.21rc1_5049 INITIAL EULER ASSIGNMENT cryoSPARC FINAL EULER ASSIGNMENT cryoSPARC RECONSTRUCTION cryoSPARC
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION