6PU4
MicroED structure of proteinase K recorded on Falcon III
ELECTRON CRYSTALLOGRAPHY
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 67.48 | α = 90 |
b = 67.48 | β = 90 |
c = 101.75 | γ = 90 |
Symmetry | |
---|---|
Space Group | P 43 21 2 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | Net I Over Average Sigma (I) | Redundancy | Number Reflections (All) | Number Reflections (Observed) | Observed Criterion Sigma (F) | Observed Criterion Sigma (I) | B (Isotropic) From Wilson Plot | |||||||||
1 | 2.7 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||
2.7 | 2.83 | 97.2 | 1.972 | 0.169 | 0.9 | 3.8 |
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 (All) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | ||||||
ELECTRON CRYSTALLOGRAPHY | MOLECULAR REPLACEMENT | THROUGHOUT | PDB entry 5K7S | 2.1 | 27.66 | 13788 | 897 | 96.211 | 0.224 | 0.2206 | 0.267 | Copied from PDB entry 5K7S | 11.979 |
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] | |
0.317 | 0.317 | -0.634 |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 35.3 |
r_dihedral_angle_4_deg | 20.655 |
r_dihedral_angle_3_deg | 15.578 |
r_dihedral_angle_1_deg | 6.841 |
r_lrange_it | 2.969 |
r_lrange_other | 2.963 |
r_scangle_it | 1.511 |
r_scangle_other | 1.511 |
r_angle_refined_deg | 1.472 |
r_angle_other_deg | 1.406 |
Software
Software | |
---|---|
Software Name | Purpose |
REFMAC | refinement |
MOSFLM | data reduction |
Aimless | data scaling |
MOLREP | phasing |
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) | 2.1 |
Resolution Method | DIFFRACTION PATTERN/LAYERLINES |
Other Details | |
Refinement Type | |
Symmetry Type | 3D CRYSTAL |
Space Group Name | |
Length a | 67.4801 |
Length b | 67.4801 |
Length c | 67.4801 |
Angle Alpha | 90 |
Angle Beta | 90 |
Angle Gamma | 90 |
Map-Model Fitting and Refinement | |||||
---|---|---|---|---|---|
Id | 1 (5K7S) | ||||
Refinement Space | RECIPROCAL | ||||
Refinement Protocol | OTHER | ||||
Refinement Target | |||||
Overall B Value | 13.054 | ||||
Fitting Procedure | |||||
Details | Electron scattering factors |
Data Acquisition | |||||||||
---|---|---|---|---|---|---|---|---|---|
Detector Type | FEI FALCON III (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 0.01 |
Imaging Experiment | 1 |
---|---|
Date of Experiment | |
Temperature (Kelvin) | |
Microscope Model | FEI TALOS ARCTICA |
Minimum Defocus (nm) | |
Maximum Defocus (nm) | |
Minimum Tilt Angle (degrees) | |
Maximum Tilt Angle (degrees) | |
Nominal CS | |
Imaging Mode | DIFFRACTION |
Specimen Holder Model | FEI TITAN KRIOS AUTOGRID HOLDER |
Nominal Magnification | |
Calibrated Magnification | |
Source | FIELD EMISSION GUN |
Acceleration Voltage (kV) | 200 |
Imaging Details |
EM Software | ||
---|---|---|
Task | Software Package | Version |
MODEL FITTING | MOLREP | 11.6.04 |
MODEL REFINEMENT | REFMAC | 5.8.0238 |
MOLECULAR REPLACEMENT | MOLREP | 11.6.04 |
SYMMETRY DETERMINATION | POINTLESS | 1.11.19 |
CRYSTALLOGRAPHY MERGING | AIMLESS | 0.7.4 |
RECONSTRUCTION | REFMAC | 5.8.0238 |
Image Processing | ||||
---|---|---|---|---|
CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
NONE |