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Cryo-EM structure of a class A orphan GPCR
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6KPG experimental model PDB 6E3Y
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 4.18 f_angle_d 0.623 f_chiral_restr 0.044 f_plane_restr 0.006 f_bond_d 0.004
Sample Complex of GPCR and G protein Sample Components Isoform Gnas-2 of Guanine nucleotide-binding protein G(s) subunit alpha isoforms short 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 Nanobody 35 G-protein coupled receptor 12
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 75313 Reported Resolution (Å) 2.77 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (6KPG, 6E3Y, 6E3Y, 6E3Y, 6E3Y) Refinement Space Refinement Protocol Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 60
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 FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 165000 Calibrated Magnification 165000 Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version IMAGE ACQUISITION EPU 1.11.0 CTF CORRECTION cryoSPARC 3.3.1 MODEL FITTING Coot 0.9.7 MODEL REFINEMENT Coot 0.9.7 MODEL REFINEMENT PHENIX 1.20.1-4487
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION Patch CTF refinement 2065341