8E52
MicroED structure of proteinase K recorded on K2
ELECTRON CRYSTALLOGRAPHY
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 67.57 | α = 90 |
| b = 67.57 | β = 90 |
| c = 100.91 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 43 21 2 |
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Work | R-Free | Mean Isotropic B | ||||||||
| ELECTRON CRYSTALLOGRAPHY | THROUGHOUT | 2.8 | 25.924 | 6035 | 391 | 97.812 | 0.25 | 0.2472 | 0.292 | 20.322 | |||||||||
| Temperature Factor Modeling | ||||||
|---|---|---|---|---|---|---|
| Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
| 0.785 | 0.785 | -1.57 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 33.94 |
| r_dihedral_angle_4_deg | 17.668 |
| r_dihedral_angle_3_deg | 15.515 |
| r_dihedral_angle_1_deg | 7.067 |
| r_lrange_it | 3.613 |
| r_lrange_other | 3.562 |
| r_angle_refined_deg | 1.336 |
| r_angle_other_deg | 1.23 |
| r_scangle_it | 1.195 |
| r_scangle_other | 1.195 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| Sample |
|---|
| Proteinase K |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | 3D ARRAY |
| Vitrification Instrument | LEICA PLUNGER |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | CRYSTALLOGRAPHY |
| Number of Particles | |
| Reported Resolution (Å) | |
| Resolution Method | DIFFRACTION PATTERN/LAYERLINES |
| Other Details | |
| Refinement Type | |
| Symmetry Type | 3D CRYSTAL |
| Space Group Name | |
| Length a | 67.57 |
| Length b | 67.57 |
| Length c | 67.57 |
| Angle Alpha | 90 |
| Angle Beta | 90 |
| Angle Gamma | 90 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 | ||||
| Refinement Space | RECIPROCAL | ||||
| Refinement Protocol | RIGID BODY FIT | ||||
| Refinement Target | Maximum liklihood | ||||
| Overall B Value | 20.32 | ||||
| Fitting Procedure | |||||
| Details | |||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | GATAN K2 BASE (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 0.01 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TITAN KRIOS |
| Minimum Defocus (nm) | |
| Maximum Defocus (nm) | |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | 2.7 |
| Imaging Mode | DIFFRACTION |
| Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
| Nominal Magnification | |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 300 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| CRYSTALLOGRAPHY MERGING | AIMLESS | |
| RECONSTRUCTION | REFMAC | |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| NONE | ||||
