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eIF2B lacking the latch helix bound to ISRACT-01 (Inactive state)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 7L7G
Refinement RMS Deviations Key Refinement Restraint Deviation s_dihedral_angle_6_deg 14.545 s_dihedral_angle_3_deg 11.3924 s_dihedral_angle_1_deg 7.835 s_dihedral_angle_2_deg 4.4268 s_angle_nonh_deg 1.7091 s_metal_ion 0.2886 s_nbtor 0.2274 s_nbd 0.2135 s_hbond_nbd 0.115 s_chiral_restr 0.0674
RMS Deviations Key Refinement Restraint Deviation s_dihedral_angle_6_deg 14.545 s_dihedral_angle_3_deg 11.3924 s_dihedral_angle_1_deg 7.835 s_dihedral_angle_2_deg 4.4268 s_angle_nonh_deg 1.7091 s_metal_ion 0.2886 s_nbtor 0.2274 s_nbd 0.2135 s_hbond_nbd 0.115 s_chiral_restr 0.0674 s_bond_nonh_d 0.0081 s_planes 0.0053
Sample Eukaryotic translation initiation factor 2B (eIF2B) bound to ISRACT-01 in the I-state
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 157984 Reported Resolution (Å) 3.1 Resolution Method FSC 0.143 CUT-OFF Other Details Refinement Type Symmetry Type POINT
Map-Model Fitting and Refinement Id 1 (7L7G) Refinement Space Refinement Protocol AB INITIO MODEL Refinement Target Overall B Value Fitting Procedure Details
Data Acquisition Detector Type TFS FALCON 4i (4k x 4k) Electron Dose (electrons/Å**2) 50
Imaging Experiment 1 Date of Experiment Temperature (Kelvin) Microscope Model TFS GLACIOS Minimum Defocus (nm) 600 Maximum Defocus (nm) 1600 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 130000 Calibrated Magnification Source FIELD EMISSION GUN Acceleration Voltage (kV) 200 Imaging Details
EM Software Task Software Package Version PARTICLE SELECTION cryoSPARC 4.4.1 IMAGE ACQUISITION EPU CTF CORRECTION cryoSPARC 4.4.1 MODEL FITTING ISOLDE MODEL REFINEMENT Servalcat INITIAL EULER ASSIGNMENT cryoSPARC 4.4.1 FINAL EULER ASSIGNMENT cryoSPARC 4.4.1 CLASSIFICATION cryoSPARC 4.4.1 RECONSTRUCTION cryoSPARC 4.4.1
Image Processing CTF Correction Type CTF Correction Details Number of Particles Selected Particle Selection Details PHASE FLIPPING AND AMPLITUDE CORRECTION 2714171