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Cryo-EM structure of a class A orphan GPCR in complex with Gi
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 5.142 f_angle_d 0.568 f_chiral_restr 0.042 f_plane_restr 0.005 f_bond_d 0.003
Sample Ternary complex of ligand, GPCR and G protein Sample Components Guanine nucleotide-binding protein G(i) subunit alpha-1 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 Endo-1,4-beta-xylanase,Probable G-protein coupled receptor 139 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 250483 Reported Resolution (Å) 3.2 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 Refinement Space REAL Refinement Protocol AB INITIO MODEL Refinement Target Correlation coefficient Overall B Value 72.5 Fitting Procedure Details
Data Acquisition Detector Type GATAN K2 SUMMIT (4k x 4k) Electron Dose (electrons/Å**2) 8
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1000 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 130000 Calibrated Magnification 130000 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION SerialEM CTF CORRECTION cryoSPARC 3.2 MODEL REFINEMENT PHENIX
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION Patch CTF refinement 2437608