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Cryo-EM structure of the human chemokine receptor CCR6 in complex with CCL20 and a Go protein
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6G79 experimental model PDB 6DDE experimental model PDB 1M8A
Sample CCR6-CCL20-Go complex Sample Components Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 C-C motif chemokine 20, Guanine nucleotide-binding protein G(o) subunit alpha,Guanine nucleotide-binding protein G(o) subunit alpha, C-C chemokine receptor type 6,C-C chemokine receptor type 6 scFv16
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 230450 Reported Resolution (Å) 3.34 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (6G79, 6DDE, 1M8A) 2 (6G79, 6DDE, 1M8A) Refinement Space REAL REAL Refinement Protocol RIGID BODY FIT FLEXIBLE FIT Refinement Target Correlation coefficient Overall B Value 123.52 Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 81
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 600 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 165000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION RELION 3.0.5 IMAGE ACQUISITION SerialEM 3.8.0 beta CTF CORRECTION CTFFIND 4.1 MODEL FITTING UCSF Chimera 1.14 MODEL FITTING Coot 0.8.9.2 INITIAL EULER ASSIGNMENT RELION 3.0.5 FINAL EULER ASSIGNMENT RELION 3.0.5 CLASSIFICATION RELION 3.0.5 RECONSTRUCTION RELION 3.0.5 MODEL REFINEMENT Coot 0.8.9.2 MODEL REFINEMENT PHENIX dev-3026 MODEL REFINEMENT REFMAC CCP4 7.0 MODEL FITTING UCSF Chimera 1.14 MODEL FITTING Coot 0.8.9.2 MODEL REFINEMENT Coot 0.8.9.2 MODEL REFINEMENT PHENIX dev-3026 MODEL REFINEMENT REFMAC CCP4 7.0
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1000382