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Cryo-EM structure of Anopheles stephensi IR8a-IR75k receptor with nonanoic acid
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details in silico model AlphaFold
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 3.367 f_angle_d 0.523 f_chiral_restr 0.04 f_plane_restr 0.003 f_bond_d 0.002
Sample structure of IR8a-IR75k receptor in complex with nonanoic acid
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument Cryogen Name ETHANE Sample Vitrification Details
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 75044 Reported Resolution (Å) 3.33 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 Refinement Space Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type FEI FALCON IV (4k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 1100 Maximum Defocus (nm) 1800 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode BRIGHT FIELD Specimen Holder Model Nominal Magnification Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.7.1 IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC 4.7.1 MODEL FITTING UCSF Chimera INITIAL EULER ASSIGNMENT cryoSPARC 4.7.1 FINAL EULER ASSIGNMENT cryoSPARC 4.7.1 CLASSIFICATION cryoSPARC 4.7.1 RECONSTRUCTION cryoSPARC 4.7.1 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