6W81

Structure of PEDV main protease bound to potent broad-spectrum non-covalent inhibitor X77


X-RAY DIFFRACTION

Crystallization

Crystalization Experiments
IDMethodpHTemperatureDetails
1VAPOR DIFFUSION, HANGING DROP4293PEDV-3CLpro:77 inhibitor complex was co-crystallized by setting up 2 uL drops that were composed of 1 uL of purified PEDV-3CLpro (2.4 mg/mL) that had been incubated for three hours with a 3 molar excess of compound 77, and 1 uL of reservoir solution: 0.20 M malonic acid (MIB) pH 4.0 and 25% PEG-3350
Crystal Properties
Matthews coefficientSolvent content
2.1141.81

Crystal Data

Unit Cell
Length ( Å )Angle ( ˚ )
a = 56.679α = 90
b = 85.257β = 100.46
c = 58.186γ = 90
Symmetry
Space GroupP 1 21 1

Diffraction

Diffraction Experiment
ID #Crystal IDScattering TypeData Collection TemperatureDetectorDetector TypeDetailsCollection DateMonochromatorProtocol
11x-ray100CCDMARMOSAIC 300 mm CCD2020-03-01MSINGLE WAVELENGTH
Radiation Source
ID #SourceTypeWavelength ListSynchrotron SiteBeamline
1SYNCHROTRONAPS BEAMLINE 21-ID-G0.988APS21-ID-G

Data Collection

Overall
ID #Resolution (High)Resolution (Low)Percent Possible (Observed)Rrim I (All)Rpim I (All)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
11.555097.80.0860.0428.94.87691920.34
Highest Resolution Shell
ID #Resolution (High)Resolution (Low)Percent Possible (All)Percent Possible (Observed)R Merge I (Observed)Rpim I (All)CC (Half)Mean I Over Sigma (Observed)RedundancyNumber Unique Reflections (All)
11.551.5879.20.7390.4690.6371.354.4

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 REPLACEMENTFREE R-VALUE5HYO1.5527.871.3476888199897.420.17680.17580.213634.69
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]
RMS Deviations
KeyRefinement Restraint Deviation
f_dihedral_angle_d14.7667
f_angle_d0.8409
f_chiral_restr0.0519
f_bond_d0.0058
f_plane_restr0.0045
Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen AtomsNumber
Protein Atoms4590
Nucleic Acid Atoms
Solvent Atoms534
Heterogen Atoms75

Software

Software
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing