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Structure of human calcium-sensing receptor in complex with chimeric Gq (miniGisq) protein in nanodiscs
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7SIL experimental model PDB 7P00
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 13.418 f_angle_d 0.595 f_chiral_restr 0.042 f_plane_restr 0.005 f_bond_d 0.004
Sample Human CaSR in complex with chimeric Gq (miniGisq) protein
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details The sample was blotted for 6s before plunge-frozen.
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 91042 Reported Resolution (Å) 3.4 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (7SIL, 7SIL, 7P00, 7P00, 7P00) Refinement Space REAL Refinement Protocol FLEXIBLE FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 74.9
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model FEI TITAN KRIOS Minimum Defocus (nm) 1200 Maximum Defocus (nm) 1900 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 cryoSPARC 3.3.2 IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC 3.3.2 MODEL FITTING Coot 0.9.8.1 INITIAL EULER ASSIGNMENT cryoSPARC 3.3.2 FINAL EULER ASSIGNMENT cryoSPARC 3.3.2 RECONSTRUCTION cryoSPARC 3.3.2 MODEL REFINEMENT PHENIX 1.19.2_4158:
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 1339334