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The ER membrane protein complex acts as a chaperone to promote voltage-gated calcium channel assembly
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 8S9S in silico model AlphaFold
Refinement RMS Deviations Key Refinement Restraint Deviation f_dihedral_angle_d 3.8835 f_angle_d 0.5503 f_chiral_restr 0.0415 f_plane_restr 0.0034 f_bond_d 0.0024
Sample Structure of the human ER membrane protein complex (EMC) with Nanobodies E2 and G9
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 43012 Reported Resolution (Å) 4.16 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT Point Symmetry C1
Map-Model Fitting and Refinement Id 1 (8s9s) Refinement Space REAL Refinement Protocol RIGID BODY FIT Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type TFS FALCON 4i (4k x 4k) Electron Dose (electrons/Å**2) 54.23
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS KRIOS Minimum Defocus (nm) 600 Maximum Defocus (nm) 2000 Minimum Tilt Angle (degrees) Maximum Tilt Angle (degrees) Nominal CS 2.7 Imaging Mode DARK FIELD Specimen Holder Model FEI TITAN KRIOS AUTOGRID HOLDER Nominal Magnification 130000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 300 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC IMAGE ACQUISITION EPU 3.8.1.7603 CTF CORRECTION cryoSPARC MODEL FITTING Coot 0.9.8.96 MODEL FITTING UCSF ChimeraX 1.7 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