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Structure of the CX3CL1.44-US28-GqiN18-scFv16 in the E-state, chemokine domain fully modeled
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7RKF in silico model AlphaFold experimental model PDB 4XT1
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 5.3615 f_angle_d 0.4902 f_chiral_restr 0.0409 f_plane_restr 0.0036 f_bond_d 0.0027
Sample CX3CL1.44-US28-GqiN18-scFv16 Sample Components Gq heterotrimer CX3CL1.44-US28 scFv16
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument LEICA EM GP Cryogen Name ETHANE Sample Vitrification Details 3 s blotting before plunging
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 64658 Reported Resolution (Å) 2.74 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7rkf, 7rkf, 7rkf, 4xt1, 4xt1) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 (6k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 800 Maximum Defocus (nm) 2000 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 57624 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.6 CTF CORRECTION cryoSPARC 4.6 MODEL FITTING PHENIX INITIAL EULER ASSIGNMENT cryoSPARC 4.6 FINAL EULER ASSIGNMENT cryoSPARC 4.6 CLASSIFICATION cryoSPARC 4.6 RECONSTRUCTION cryoSPARC 4.6 MODEL REFINEMENT PHENIX 1.21.2_5419
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION CryoSPARC patch CTF estimation and global/local CTF refinements 8400483 initial particles that appeared to be protein