eIF2B lacking the latch helix bound to ISRACT-01 (Inactive state)
ELECTRON MICROSCOPY
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 |
| 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 | |||
