3SZN
Crystal structure of SARS coronavirus main protease complexed with an alpha, beta-unsaturated ethyl ester SG75
X-RAY DIFFRACTION
Crystallization
Crystalization Experiments | ||||
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ID | Method | pH | Temperature | Details |
1 | VAPOR DIFFUSION, SITTING DROP | 6 | 298 | 8% PEG 6000, 0.1 M MES, 3% MPD, 3% DMSO, pH 6.0, VAPOR DIFFUSION, SITTING DROP, temperature 298K |
Crystal Properties | |
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Matthews coefficient | Solvent content |
3.38 | 63.63 |
Crystal Data
Unit Cell | |
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Length ( Å ) | Angle ( ˚ ) |
a = 107.98 | α = 90 |
b = 82.3 | β = 104.38 |
c = 53.23 | 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 | 200 | CCD | MARMOSAIC 225 mm CCD | 2010-08-06 | M | SINGLE WAVELENGTH |
Radiation Source | |||||
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ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline |
1 | SYNCHROTRON | BESSY BEAMLINE 14.2 | 0.9184 | BESSY | 14.2 |
Data Collection
Overall | |||||||||||||||||||
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ID # | Resolution (High) | Resolution (Low) | Percent Possible (Observed) | 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 | 1.69 | 32.1 | 94.9 | 50479 | 47909 | -3 |
Highest Resolution Shell | |||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
ID # | Resolution (High) | Resolution (Low) | Percent Possible (All) | Percent Possible (Observed) | Mean I Over Sigma (Observed) | Redundancy | Number Unique Reflections (All) | ||||||||||||
1 | 1.69 | 1.733 | 94.9 |
Refinement
Statistics | |||||||||||||||||||
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Diffraction ID | Structure Solution Method | Cross Validation method | Resolution (High) | Resolution (Low) | Number Reflections (All) | Number Reflections (Observed) | Number Reflections (R-Free) | Percent Reflections (Observed) | R-Factor (All) | R-Factor (Observed) | R-Work | R-Free | R-Free Selection Details | Mean Isotropic B | |||||
X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 1.69 | 32.1 | 50479 | 47909 | 2570 | 99.84 | 0.18604 | 0.18604 | 0.18493 | 0.20669 | RANDOM | 25.604 |
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] | |
0.02 | 0.02 | -0.02 | 0.01 |
RMS Deviations | |
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Key | Refinement Restraint Deviation |
r_dihedral_angle_2_deg | 33.685 |
r_dihedral_angle_4_deg | 13.852 |
r_dihedral_angle_3_deg | 11.968 |
r_dihedral_angle_1_deg | 6.257 |
r_scangle_it | 3.169 |
r_scbond_it | 1.998 |
r_angle_refined_deg | 1.304 |
r_mcangle_it | 1.24 |
r_mcbond_it | 0.638 |
r_chiral_restr | 0.085 |
Non-Hydrogen Atoms Used in Refinement | |
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Non-Hydrogen Atoms | Number |
Protein Atoms | 2371 |
Nucleic Acid Atoms | |
Solvent Atoms | 423 |
Heterogen Atoms | 37 |
Software
Software | |
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Software Name | Purpose |
MAR345 | data collection |
MOLREP | phasing |
REFMAC | refinement |
iMOSFLM | data reduction |
SCALA | data scaling |