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Crystal structure of SARS-CoV-2 3CL protease in complex with an ethylcyclohexyl 2-pyrrolidone inhibitor
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6XMK
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 6.5 291 30% w/v PEG550 MME, 100 mM Bis-Tris, pH 6.5, 50 mM calcium chloride
Crystal Properties Matthews coefficient Solvent content 2.25 45.22
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 55.172 α = 90 b = 98.499 β = 107.8 c = 58.885 γ = 90
Symmetry Space Group P 1 21 1
Diffraction Diffraction Experiment ID # Crystal ID Scattering Type Data Collection Temperature Detector Detector Type Details Collection Date Monochromator Protocol 1 1 x-ray 100 PIXEL Bruker PHOTON III 2022-09-20 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SEALED TUBE BRUKER D8 QUEST 1.5418
Data Collection Overall 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 1.7 46.36 100 0.078 0.081 0.022 0.999 24 13.1 65848
Highest Resolution Shell 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 1.7 1.73 100 1.348 1.443 0.511 0.665 7.6
Refinement Statistics Diffraction ID Structure Solution Method Cross Validation method Resolution (High) Resolution (Low) Cut-off Sigma (F) Number Reflections (Observed) Number Reflections (R-Free) Percent Reflections (Observed) R-Factor (Observed) R-Work (Depositor) R-Work (DCC) R-Free (Depositor) R-Free (DCC) Mean Isotropic B X-RAY DIFFRACTION MOLECULAR REPLACEMENT FREE R-VALUE 1.7 31.76 1.04 65804 3413 99.98 0.1759 0.1739 0.1815 0.2119 0.2147
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 Key Refinement Restraint Deviation f_dihedral_angle_d 12.977 f_angle_d 1.012 f_chiral_restr 0.058 f_bond_d 0.01 f_plane_restr 0.009
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 4520 Nucleic Acid Atoms Solvent Atoms 439 Heterogen Atoms 149
Software Software Software Name Purpose PHENIX refinement Aimless data scaling XDS data reduction PHASER phasing