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Crystal Structure of NendoU (Uridylate-specific endoribonuclease, nsp15) from Betacoronavirus SARS-CoV-2 (H235A mutant)
Starting Model(s) Initial Refinement Model(s) Type Source Accession Code Details experimental model PDB 6XDH
Crystallization Crystalization Experiments ID Method pH Temperature Details 1 VAPOR DIFFUSION, SITTING DROP 8.5 291 Morpheus Fusion G4: 0.2M Sodium formate; 0.2M Ammonium acetate; 0.2M Sodium citrate tribsic dihydrate; 0.2M Potassium sodium tartrate tetrahydrate; 0.2M Sodium oxamate, 3% w/v NDSB 195, 3% w/v NDSB 201, 3% w/v NDSB 211,3% w/v NDSB 221, 3% w/v NDSB 256, 0.5M Tris (base); 0.5M BICINE pH 8.5, 40% v/v PEG 500 MME; 20 % w/v PEG 20000, BewuA.18928.a.MX152.PW39137 at 18 mg/mL. Plate 13311 well G4 drop2, Puck: PSL-0109, Cryo: Direct
Crystal Properties Matthews coefficient Solvent content 4.35 71.73
Crystal Data Unit Cell Length ( Å ) Angle ( ˚ ) a = 151.372 α = 90 b = 151.372 β = 90 c = 108.745 γ = 120
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 DECTRIS EIGER2 XE 9M 2023-05-08 M SINGLE WAVELENGTH
Radiation Source ID # Source Type Wavelength List Synchrotron Site Beamline 1 SYNCHROTRON NSLS-II BEAMLINE 19-ID 0.9795 NSLS-II 19-ID
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 2.25 131.09 100 0.182 0.186 0.041 0.999 14.5 21 67209
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 2.25 2.31 100 2.397 2.456 0.533 0.682 21.1
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 2.25 65.55 1.34 67145 3350 99.95 0.1883 0.187 0.1905 0.2133 0.2149
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 13.987 f_angle_d 0.928 f_chiral_restr 0.057 f_bond_d 0.009 f_plane_restr 0.008
Non-Hydrogen Atoms Used in Refinement Non-Hydrogen Atoms Number Protein Atoms 5167 Nucleic Acid Atoms Solvent Atoms 207 Heterogen Atoms 18
Software Software Software Name Purpose PHENIX refinement Aimless data scaling XDS data reduction PHASER phasing