6XHN

Covalent complex of SARS-CoV main protease with 4-methoxy-N-[(2S)-4-methyl-1-oxo-1-({(2S)-3-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]butan-2-yl}amino)pentan-2-yl]-1H-indole-2-carboxamide


X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
TypeSourceAccession CodeDetails
experimental modelPDB 1UJ1 

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION294Buffer: 0.1 M (4.0 uL of stock 1.0 M) Sodium/Potassium Phosphate (pH 6.20) Precipitant: 0.01 M (0.4 uL of stock 1.0 M) TCEP Salt: 0.2 M (1.6 uL of stock 5.0 M) Sodium chloride Precipitant: 10.0 %w/v (8.0 uL of stock 50.0 %w/v) PEG 8000
Crystal Properties
Matthews coefficientSolvent content
2.3547.77

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 55.88α = 90
b = 98.74β = 108.74
c = 60.03γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray98PIXELDECTRIS EIGER X 9M2020-06-10MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 17-ID1APS17-ID

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)CC (Half)Net I Over Average Sigma (I)RedundancyNumber Reflections (All)Number Reflections (Observed)Observed Criterion Sigma (F)Observed Criterion Sigma (I)B (Isotropic) From Wilson Plot
11.37756.8577.90.0570.99811.63.499039
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.3771.4660.90.419

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeR-Free Selection DetailsMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT1UJ11.37756.8599039486477.90.22320.2220.2467RANDOM22.41
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]
-0.25770.53360.11710.1406
RMS Deviations
KeyRefinement Restraint Deviation
t_other_torsion15.29
t_omega_torsion4.03
t_angle_deg1.03
t_bond_d0.008
t_dihedral_angle_d
t_gen_planes
t_it
t_chiral_improper_torsion
t_ideal_dist_contact
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4658
Nucleic Acid Atoms
Solvent Atoms342
Heterogen Atoms70

Software

Software
Software NamePurpose
BUSTERrefinement
autoPROCdata scaling
BUSTERphasing
autoPROCdata reduction