6CLB
3.20 A MicroED structure of proteinase K at 7.8 e- / A^2
ELECTRON CRYSTALLOGRAPHY
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) |
| a = 67.624 | α = 90 |
| b = 67.624 | β = 90 |
| c = 100.678 | γ = 90 |
| Symmetry | |
|---|---|
| Space Group | P 43 21 2 |
Diffraction
| Diffraction Experiment | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
| 1 | 1 | 2016-03-07 | ||||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
| ELECTRON CRYSTALLOGRAPHY | FOURIER SYNTHESIS | THROUGHOUT | PDB entry 6CL7 | 3.2 | 50.01 | 2933 | 210 | 74.92 | 0.2215 | 0.21397 | 0.32615 | RANDOM | 51.51 | ||||||
| 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] | |
| 1.36 | 1.36 | -2.72 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation |
| r_dihedral_angle_2_deg | 37.628 |
| r_dihedral_angle_3_deg | 18.804 |
| r_dihedral_angle_4_deg | 14.477 |
| r_long_range_B_refined | 9.729 |
| r_long_range_B_other | 9.727 |
| r_dihedral_angle_1_deg | 8.896 |
| r_mcangle_it | 4.914 |
| r_mcangle_other | 4.912 |
| r_scangle_other | 4.879 |
| r_mcbond_other | 2.763 |
Software
| Software | |
|---|---|
| Software Name | Purpose |
| REFMAC | refinement |
| MOSFLM | data reduction |
| Aimless | data scaling |
| Sample |
|---|
| Proteinase K |
| Specimen Preparation | |
|---|---|
| Sample Aggregation State | 3D ARRAY |
| Vitrification Instrument | FEI VITROBOT MARK IV |
| Cryogen Name | ETHANE |
| Sample Vitrification Details | |
| 3D Reconstruction | |
|---|---|
| Reconstruction Method | CRYSTALLOGRAPHY |
| Number of Particles | |
| Reported Resolution (Å) | 3.2 |
| Resolution Method | DIFFRACTION PATTERN/LAYERLINES |
| Other Details | |
| Refinement Type | |
| Symmetry Type | 3D CRYSTAL |
| Space Group Name | |
| Length a | 67.6237 |
| Length b | 67.6237 |
| Length c | 67.6237 |
| Angle Alpha | 90 |
| Angle Beta | 90 |
| Angle Gamma | 90 |
| Map-Model Fitting and Refinement | |||||
|---|---|---|---|---|---|
| Id | 1 (5I9S) | ||||
| Refinement Space | RECIPROCAL | ||||
| Refinement Protocol | OTHER | ||||
| Refinement Target | |||||
| Overall B Value | 51.51 | ||||
| Fitting Procedure | |||||
| Details | Electron scattering factors | ||||
| Data Acquisition | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Detector Type | TVIPS TEMCAM-F416 (4k x 4k) | ||||||||
| Electron Dose (electrons/Å**2) | 0.0357 | ||||||||
| Imaging Experiment | 1 |
|---|---|
| Date of Experiment | |
| Temperature (Kelvin) | |
| Microscope Model | FEI TECNAI F20 |
| Minimum Defocus (nm) | |
| Maximum Defocus (nm) | |
| Minimum Tilt Angle (degrees) | |
| Maximum Tilt Angle (degrees) | |
| Nominal CS | |
| Imaging Mode | DIFFRACTION |
| Specimen Holder Model | |
| Nominal Magnification | |
| Calibrated Magnification | |
| Source | FIELD EMISSION GUN |
| Acceleration Voltage (kV) | 200 |
| Imaging Details |
| EM Software | ||
|---|---|---|
| Task | Software Package | Version |
| IMAGE ACQUISITION | EM-Menu | 4.0.9.75 |
| MODEL FITTING | MOLREP | 11.4.05 |
| MODEL REFINEMENT | REFMAC | 5.8.0194 |
| MOLECULAR REPLACEMENT | MOLREP | 11.4.05 |
| SYMMETRY DETERMINATION | POINTLESS | 1.11.3 |
| CRYSTALLOGRAPHY MERGING | AIMLESS | 0.5.32 |
| Image Processing | ||||
|---|---|---|---|---|
| CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
| NONE | ||||
