7AFV
Crystal structure of tetrameric beta-2-microglobulin deltaN6 S52C stabilized by a covalent ligand
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 2YXF |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 8.5 | 293 | Drop protein volume 0.2 uL Drop well volume 0.1 uL 0.04 M Porpheus Alcohol Mix (Complex ingredient) 0.1 M Morpheus Buffer System 3 pH 8.5 (Buffer) 31 %w/v Morpheus Precipitant Mix 4 (Precipitant) Stock Solutions: Porpheus Alcohol Mix 0.2 M 1,6-hexanediol, 0.2 M 1-butanol, 0.2 M (RS)-1,2-propanediol, 0.2 M 2-propanol, 0.2 M 1,4-butanediol, 0.2 M 1,3-propanediol (for a final concentration of 6.7 mM of 1,6-hexanediol, 1-butanol, (RS)-1,2-propanediol, 2-propanol, 1,4-butanediol, 1,3-propanediol) Morpheus Buffer System 3 pH 8.5 1M Tris and 1M BICINE (for a final concentration of 39.1 mM Bicine pH = 5.03 and 60.9 M Tris pH = 10.83) Morpheus Precipitant Mix 25% w/v PEG 3350, 25% w/v PEG 1000, 25% v/v MPD (for a final concentration of 7.75% w/v PEG 1000, 7.75% w/v PEG 3350 and 7.75% v/v MPD) |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.47 | 50.16 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 87.572 | α = 90 |
b = 87.572 | β = 90 |
c = 56.458 | γ = 90 |
Symmetry | |
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Space Group | P 43 21 2 |
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 PILATUS3 6M | 2020-02-03 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | DIAMOND BEAMLINE I24 | 0.9795 | Diamond | I24 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | 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 | 2.4 | 61.92 | 100 | 0.999 | 9.8 | 23 | 8519 |
Highest Resolution Shell | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | R Merge I (Observed) | R-Sym I (Observed) | CC (Half) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | |||||||||
1 | 2.4 | 2.53 | 1.913 | 0.399 | 0.789 |
Refinement
Statistics | |||||||||||||||||||
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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 | ||||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 2YXF | 2.4 | 61.92 | 8519 | 452 | 99.77 | 0.2361 | 0.2333 | 0.2884 | RANDOM | 74.502 |
Temperature Factor Modeling | ||||||
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Anisotropic B[1][1] | Anisotropic B[1][2] | Anisotropic B[1][3] | Anisotropic B[2][2] | Anisotropic B[2][3] | Anisotropic B[3][3] | |
-1.7 | -1.7 | 3.39 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 32.399 |
r_dihedral_angle_4_deg | 25.823 |
r_dihedral_angle_3_deg | 17.006 |
r_mcangle_it | 8.652 |
r_dihedral_angle_1_deg | 7.843 |
r_mcbond_other | 5.623 |
r_mcbond_it | 5.621 |
r_angle_refined_deg | 1.553 |
r_angle_other_deg | 1.144 |
r_chiral_restr | 0.051 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 1520 |
Nucleic Acid Atoms | |
Solvent Atoms | 33 |
Heterogen Atoms | 784 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
PDB_EXTRACT | data extraction |
PHASER | phasing |
xia2 | data processing |
DIALS | data processing |
XSCALE | data reduction |
XDS | data reduction |
Aimless | data scaling |