Crystal structure of the peanut allergen Ara h 2 with two human derived Fab antibodies 22S1 and 23P34
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 8D12 | for S1 and Ara h 2 molecules |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 277 | 0.1M BisTRisPropane pH 7.5, 0.2M potassium sodium tartrate tetrahydrate, 20% PEG3350 |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.64 | 53.48 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 90.906 | α = 90 |
b = 165.009 | β = 105.93 |
c = 164.642 | γ = 90 |
Symmetry | |
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Space Group | P 1 21 1 |
Diffraction
Diffraction Experiment | ||||||||||||||
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ID # | Crystal ID | Scattering Type | Data Collection Temperature | Detector | Detector Type | Details | Collection Date | Monochromator | Protocol | |||||
1 | 1 | x-ray | 100 | PIXEL | DECTRIS EIGER X 16M | 2022-07-15 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | APS BEAMLINE 22-ID | 1.0 | APS | 22-ID |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim 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 | 2.95 | 50 | 99.3 | 0.1 | 0.109 | 0.042 | 0.992 | 8.4 | 6.6 | 97947 | 75.35 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | Rrim I (All) | Rpim I (All) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||
1 | 2.95 | 3 | 1.095 | 1.185 | 0.448 | 0.752 | 1.5 |
Refinement
Statistics | |||||||||||||||||||
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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 (Depositor) | R-Work (DCC) | R-Free (Depositor) | R-Free (DCC) | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 2.95 | 49.53 | 1.35 | 96963 | 1985 | 98.85 | 0.2142 | 0.2134 | 0.2133 | 0.2531 | 0.2528 | 85 |
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 | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 13.6105 |
f_angle_d | 1.0821 |
f_chiral_restr | 0.0615 |
f_plane_restr | 0.0082 |
f_bond_d | 0.0071 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 25607 |
Nucleic Acid Atoms | |
Solvent Atoms | 23 |
Heterogen Atoms |
Software
Software | |
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Software Name | Purpose |
PHENIX | refinement |
HKL-2000 | data reduction |
HKL-2000 | data scaling |
PHASER | phasing |