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Cryo-EM structure of an intact human acetylcholinesterase (T-form) tetramer in complex with PRiMA
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 4EY4 experimental model PDB 1VZJ
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 5.514 f_angle_d 0.516 f_chiral_restr 0.044 f_plane_restr 0.006 f_bond_d 0.003
Sample Complex of human acetylcholinesterase tetramer bound to PRiMA
Specimen Preparation Sample Aggregation State PARTICLE Vitrification Instrument FEI VITROBOT MARK IV Cryogen Name ETHANE Sample Vitrification Details Blot force 2, 9.5 s
3D Reconstruction Reconstruction Method SINGLE PARTICLE Number of Particles 531169 Reported Resolution (Å) 2.94 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (4EY4, 1VZJ) Refinement Space REAL Refinement Protocol OTHER Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type GATAN K3 BIOQUANTUM (6k x 4k) Electron Dose (electrons/Å**2) 54.16
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 600 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 Topaz CTF CORRECTION cryoSPARC MODEL FITTING PHENIX 1.21.2_5419 INITIAL EULER ASSIGNMENT cryoSPARC FINAL EULER ASSIGNMENT cryoSPARC CLASSIFICATION cryoSPARC RECONSTRUCTION cryoSPARC MODEL REFINEMENT PHENIX 1.21.2_5419
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 3018602