Crystal Structure of SARS-CoV-2 Main Protease (3CLpro/Mpro) in Complex with Covalent Inhibitor VBY-825 (Partial Occupancy)
X-RAY DIFFRACTION
Starting Model(s)
| Initial Refinement Model(s) | |||
|---|---|---|---|
| Type | Source | Accession Code | Details | 
| experimental model | PDB | 7K40 | |
Crystallization
| Crystalization Experiments | ||||
|---|---|---|---|---|
| ID | Method | pH | Temperature | Details | 
| 1 | VAPOR DIFFUSION, HANGING DROP | 7 | 293 | PEG 4000, HEPES pH 7.0, 1 mM VBY-825 (in final drop), 4% DMSO (in final drop) | 
| Crystal Properties | |
|---|---|
| Matthews coefficient | Solvent content | 
| 2.02 | 39.25 | 
Crystal Data
| Unit Cell | |
|---|---|
| Length ( Å ) | Angle ( ˚ ) | 
| a = 114.706 | α = 90 | 
| b = 53.896 | β = 101.1 | 
| c = 44.75 | γ = 90 | 
| Symmetry | |
|---|---|
| Space Group | C 1 2 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 | DECTRIS EIGER X 16M | 2021-03-21 | M | SINGLE WAVELENGTH | ||||||
| Radiation Source | |||||
|---|---|---|---|---|---|
| ID # | Source | Type | Wavelength List | Synchrotron Site | Beamline | 
| 1 | SYNCHROTRON | NSLS-II BEAMLINE 17-ID-2 | 0.9793 | NSLS-II | 17-ID-2 | 
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 | 28.14 | 100 | 0.184 | 0.194 | 0.059 | 0.997 | 9 | 10.3 | 29633 | |||||||||
| 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 | 2.488 | 2.627 | 0.834 | 0.608 | 9.5 | |||||||||||
Refinement
| Statistics | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Diffraction ID | Structure Solution Method | Cross Validation method | Starting model | Resolution (High) | Resolution (Low) | 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) | R-Free Selection Details | Mean Isotropic B | ||||
| X-RAY DIFFRACTION | MOLECULAR REPLACEMENT | THROUGHOUT | 7K40 | 1.7 | 28.16 | 28079 | 1482 | 99.73 | 0.1814 | 0.1795 | 0.19 | 0.2179 | 0.22 | RANDOM | 26.133 | ||||
| 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] | |
| -0.01 | 0.01 | 0.01 | ||||
| RMS Deviations | |
|---|---|
| Key | Refinement Restraint Deviation | 
| r_dihedral_angle_2_deg | 32.77 | 
| r_dihedral_angle_4_deg | 19.098 | 
| r_dihedral_angle_3_deg | 14.227 | 
| r_dihedral_angle_1_deg | 7.39 | 
| r_angle_other_deg | 3.974 | 
| r_angle_refined_deg | 1.701 | 
| r_bond_other_d | 1.589 | 
| r_chiral_restr | 0.145 | 
| r_gen_planes_other | 0.022 | 
| r_bond_refined_d | 0.012 | 
| Non-Hydrogen Atoms Used in Refinement | |
|---|---|
| Non-Hydrogen Atoms | Number | 
| Protein Atoms | 2367 | 
| Nucleic Acid Atoms | |
| Solvent Atoms | 305 | 
| Heterogen Atoms | 104 | 
Software
| Software | |
|---|---|
| Software Name | Purpose | 
| REFMAC | refinement | 
| XDS | data reduction | 
| Aimless | data scaling | 
| PDB_EXTRACT | data extraction | 
| PHASER | phasing | 














