6LU7

The crystal structure of COVID-19 main protease in complex with an inhibitor N3


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1EVAPORATION62932% polyethylene glycol (PEG) 6000, 3% DMSO, 1mM DTT, 0.1M MES buffer (pH 6.0), protein concentration 5mg/ml, VAPOR DIFFUSION, HANGING DROP, temperature 293K
Crystal Properties
Matthew coefficientSolvent content
2.6553.53

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 97.931α = 90
b = 79.477β = 114.55
c = 51.803γ = 90
Symmetry
Space GroupC 1 2 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100PIXELDECTRIS EIGER X 16M2020-01-12MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONSSRF BEAMLINE BL17U11.07180SSRFBL17U1

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)R Merge I (Observed)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
12.1642.291000.1896.36.619455
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
12.162.221001.4726.1

Refinement

Statistics
Diffraction IDStructure Solution MethodCross Validation methodStarting modelResolution (High)Resolution (Low)Cut-off Sigma (F)Number Reflections (Observed)Number Reflections (R-Free)Percent Reflections (Observed)R-Factor (Observed)R-WorkR-FreeMean Isotropic B
X-RAY DIFFRACTIONMOLECULAR REPLACEMENTTHROUGHOUT2HOB2.1627.811.341943299799.50.2040.2020.23542.82
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]
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms2395
Nucleic Acid Atoms
Solvent Atoms84
Heterogen Atoms21

Software

Software
Software NamePurpose
PHENIXrefinement
xia2data scaling
PDB_EXTRACTdata extraction
xia2data reduction
PHASERphasing