6M9J
Racemic-GSTSTA from degenerate octameric repeats in InaZ, residues 707-712
ELECTRON CRYSTALLOGRAPHY
Crystal Data
Unit Cell | |
---|---|
Length ( Å ) | Angle ( ˚ ) |
a = 14.03 | α = 90 |
b = 9.22 | β = 104.48 |
c = 20.77 | γ = 90 |
Symmetry | |
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Space Group | P 1 21/c 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | electron | 2017-11-27 |
Data Collection
Overall | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | CC (Half) | 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 | 0.9 | 7.629 | 77.6 | 0.128 | 0.151 | 0.991 | 5.46 | 3.401 | 2906 | 46.14 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
1 | 0.9 | 0.92 | 79.9 | 0.332 | 0.387 | 0.962 | 2.52 | 3.165 |
Refinement
Statistics | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Cut-off Sigma (F) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (Observed) | R-Work | R-Free | Mean Isotropic B | |||||||
ELECTRON CRYSTALLOGRAPHY | THROUGHOUT | 0.9 | 7.629 | 1.4 | 2896 | 290 | 77.43 | 0.2342 | 0.2325 | 0.2518 | 3.552 |
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] | |
RMS Deviations | |
---|---|
Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 7.023 |
f_angle_d | 1.119 |
f_chiral_restr | 0.071 |
f_bond_d | 0.008 |
f_plane_restr | 0.004 |
Non-Hydrogen Atoms Used in Refinement | |
---|---|
Non-Hydrogen Atoms | Number |
Protein Atoms | 36 |
Nucleic Acid Atoms | |
Solvent Atoms | 3 |
Heterogen Atoms |
Software
Software | |
---|---|
Software Name | Purpose |
XSCALE | data scaling |
PHENIX | refinement |
PDB_EXTRACT | data extraction |
XDS | data reduction |
SHELXD | phasing |
Sample |
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L-GSTSTA from ice nucleation protein, inaZ, and its enantiomer, D-GSTSTA |
Specimen Preparation | |
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Sample Aggregation State | 3D ARRAY |
Vitrification Instrument | |
Cryogen Name | ETHANE |
Sample Vitrification Details |
3D Reconstruction | |
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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 | 14.03 |
Length b | 9.22 |
Length c | 9.22 |
Angle Alpha | 90 |
Angle Beta | 104.5 |
Angle Gamma | 90 |
Map-Model Fitting and Refinement | |||||
---|---|---|---|---|---|
Id | 1 | ||||
Refinement Space | RECIPROCAL | ||||
Refinement Protocol | AB INITIO MODEL | ||||
Refinement Target | maximum likelihood | ||||
Overall B Value | |||||
Fitting Procedure | |||||
Details |
Data Acquisition | |||||||||
---|---|---|---|---|---|---|---|---|---|
Detector Type | TVIPS TEMCAM-F416 (4k x 4k) | ||||||||
Electron Dose (electrons/Å**2) | 0.01 |
Imaging Experiment | 1 |
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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 |
MODEL FITTING | Coot | 0.8.9.1 |
CRYSTALLOGRAPHY MERGING | XSCALE | |
RECONSTRUCTION | SHELXD | |
MODEL REFINEMENT | PHENIX | 1.12_2829 |
Image Processing | ||||
---|---|---|---|---|
CTF Correction Type | CTF Correction Details | Number of Particles Selected | Particle Selection Details | |
NONE |