7B2J
Crystal Structure of SARS-CoV-2 main protease (Nsp5) in complex with compound 5
X-RAY DIFFRACTION
Starting Model(s)
Initial Refinement Model(s) | |||
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Type | Source | Accession Code | Details |
experimental model | PDB | 7K3T |
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 7.75 | 293 | 100 nL protein (8.3 mg/mL, 50 mM Tris pH 8.0, 300 mM NaCl), 50 nL seeds, 450 nL reservoir (200 mM HEPES pH 7.75, 5% DMSO, 12.5% PEG4K). Soaking: 200 mM HEPES pH 7.75, 15 mM compound, 7.5% DMSO, 10% PEG300, 20% PEG3K, RT, 2 h. |
Crystal Properties | |
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Matthews coefficient | Solvent content |
1.99 | 38.19 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 114.548 | α = 90 |
b = 53.652 | β = 100.559 |
c = 44.568 | γ = 90 |
Symmetry | |
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Space Group | C 1 2 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 | 2020-11-12 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | MAX IV BEAMLINE BioMAX | 0.976 | MAX IV | BioMAX |
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 | 1.55 | 48.44 | 97.8 | 0.067 | 0.073 | 0.028 | 0.999 | 13.2 | 6.5 | 37807 | 19.64 |
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 | 1.55 | 1.58 | 81.4 | 0.722 | 0.819 | 0.377 | 0.727 | 2.1 | 4.4 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | 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 | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | FREE R-VALUE | 7k3t | 1.55 | 48.44 | 1.34 | 37798 | 1914 | 97.72 | 0.1635 | 0.1615 | 0.2026 | Random selection | 25.89 |
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] | |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
f_dihedral_angle_d | 14.1975 |
f_angle_d | 1.3251 |
f_chiral_restr | 0.0718 |
f_plane_restr | 0.0104 |
f_bond_d | 0.0083 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2358 |
Nucleic Acid Atoms | |
Solvent Atoms | 357 |
Heterogen Atoms | 44 |
Software
Software | |
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Software Name | Purpose |
REFMAC | refinement |
PHENIX | refinement |
PHASER | phasing |
Aimless | data scaling |
XDS | data reduction |
Coot | model building |