7PBB
Crystal structure of CD73 in complex with caffeine in the open form
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 4H2G |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, HANGING DROP | 292 | 7 mg/mL protein concentration, 100 mM Tris pH 7.8, 10 % PEG6000, equal amounts of protein and reservoir. Following crystal formation (1-2 days), the crystals were transferred to soaking solution containing reservoir solution and 50 mM caffeine. Crystals were then transferred to cryo solution containing an additional 20 % glycerol, soaked for ~2-5 min, and flash frozen in liquid nitrogen. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
2.43 | 49.38 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 67.243 | α = 90 |
b = 131.799 | β = 90 |
c = 66.316 | γ = 90 |
Symmetry | |
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Space Group | P 21 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 PILATUS 6M | 2016-12-02 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | BESSY BEAMLINE 14.1 | 0.9184 | BESSY | 14.1 |
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 | 1.47 | 47.26 | 99 | 0.172 | 0.187 | 0.072 | 0.995 | 7.6 | 6.6 | 99458 |
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 | 1.47 | 1.5 | 95.4 | 1.443 | 1.566 | 0.597 | 0.348 | 6.5 |
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 | FOURIER SYNTHESIS | THROUGHOUT | 4h2g | 1.47 | 47.26 | 94572 | 4820 | 98.88 | 0.1738 | 0.1726 | 0.1956 | RANDOM | 13.828 |
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] | |
0.09 | 0.2 | -0.29 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 33.752 |
r_dihedral_angle_4_deg | 20.103 |
r_dihedral_angle_3_deg | 12.726 |
r_dihedral_angle_1_deg | 9.208 |
r_angle_refined_deg | 1.966 |
r_angle_other_deg | 1.57 |
r_chiral_restr | 0.108 |
r_bond_refined_d | 0.016 |
r_gen_planes_refined | 0.013 |
r_gen_planes_other | 0.002 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 4062 |
Nucleic Acid Atoms | |
Solvent Atoms | 349 |
Heterogen Atoms | 33 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
Aimless | data scaling |
PDB_EXTRACT | data extraction |
XDS | data reduction |
REFMAC | phasing |