8QQR
Mycobacterium smegmatis inosine monophosphate dehydrogenase (IMPDH) ATP+ppGpp-bound form, super-compressed
ELECTRON MICROSCOPY
Refinement
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| f_dihedral_angle_d | 12.5037 |
| f_angle_d | 0.5175 |
| f_chiral_restr | 0.0452 |
| f_plane_restr | 0.0039 |
| f_bond_d | 0.0034 |
| Sample |
|---|
| Octameric assembly of inosine monophosphate dehydrogenase in complex with ATP+ppGpp |
| 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 | 27632 |
| Reported Resolution (Å) | 2.73 |
| Resolution Method | FSC 0.143 CUT-OFF |
| Other Details | |
| Refinement Type | |
| Symmetry Type | POINT |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | REAL | ||||
| Refinement Protocol | RIGID BODY FIT | ||||
| Refinement Target | CC coefficient | ||||
| Overall B Value | 46.71 | ||||
| Fitting Procedure | |||||
| Details | Initial fitting was done in UCSF ChimeraX. Model refinement was done by iterative cycles of manual fitting with Coot and ISOLDE and automated fitting ... | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K3 BIOQUANTUM (6k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 42 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | TFS KRIOS |
| Minimum Defocus (nm) | 300 |
| Maximum Defocus (nm) | 2300 |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.7 |
| Imaging Mode | BRIGHT FIELD |
| Specimen Holder Model | |
| Nominal Magnification | 165000 |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | SerialEM | |
| MODEL FITTING | UCSF ChimeraX | 1.6.1 |
| MODEL REFINEMENT | PHENIX | 1.20.1 |
| MODEL REFINEMENT | Coot | 0.9.8 EL |
| MODEL REFINEMENT | ISOLDE | 1.4 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| PHASE FLIPPING ONLY | 15670460 | |||
