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Structure of human CD19-CD81 co-receptor complex bound to coltuximab Fab fragment
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6AL5 experimental model PDB 5TCX experimental model PDB 6ANI
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 9.0643 f_angle_d 0.4063 f_chiral_restr 0.0379 f_plane_restr 0.0031 f_bond_d 0.0018
Sample Complex of B cell co-receptor CD19 bound to the tetraspanin CD81 and coltuximab Fab fragment Sample Components B cell co-receptor CD19 bound to the tetraspanin CD81 coltuximab Fab fragment
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Blot for 4.5-5.5 seconds with a blot force of 15-16.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 244583 Reported Resolution (Å) 3.8 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6AL5, 5TCX, 6ANI, 6ANI) 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) 55
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS 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 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 crYOLO CTF CORRECTION CTFFIND 4 INITIAL EULER ASSIGNMENT RELION 3.0.8 FINAL EULER ASSIGNMENT cryoSPARC v2 CLASSIFICATION cryoSPARC v2
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2798945