7BIJ

Crystal Structure of SARS-CoV-2 main protease (Nsp5) in complex with compound 13

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	7B2J

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP	7.75	293	100 nL protein (8.3 mg/mL, 50 mM Tris pH 8.0, 300 mM NaCl), 50 nL seeds, 450 nL reservoir (200 mM HEPES pH 7.75, 5% DMSO, 12.5% PEG4K). Soaking: 200 mM HEPES pH 7.75, 12.5 mM compound, 5% DMSO, 10% PEG300, 20% PEG3K, RT, 2 h.

Crystal Properties
Matthews coefficient	Solvent content
2	38.51

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 114.745	α = 90
b = 53.839	β = 100.584
c = 44.589	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		2020-12-20	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	MAX IV BEAMLINE BioMAX	0.97625	MAX IV	BioMAX

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	1.47	33.93	98.5	0.058	0.069	0.037	0.998	13.7	6.5		44811

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	1.47	1.5	85.4		0.459	0.523	0.372	0.839	2.4	4.4

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 (All)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	7B2J	1.47	33.93	44811	2183	98.365	0.177	0.1754	0.2125	Random selection	24.61

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]
1.524		-0.643	-0.185		-1.027

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.242
r_dihedral_angle_4_deg	16.744
r_dihedral_angle_3_deg	11.932
r_dihedral_angle_1_deg	7.075
r_lrange_it	6.158
r_scangle_it	4.835
r_scbond_it	3.465
r_mcangle_it	3.014
r_mcbond_it	2.129
r_angle_refined_deg	1.799

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	35.242
r_dihedral_angle_4_deg	16.744
r_dihedral_angle_3_deg	11.932
r_dihedral_angle_1_deg	7.075
r_lrange_it	6.158
r_scangle_it	4.835
r_scbond_it	3.465
r_mcangle_it	3.014
r_mcbond_it	2.129
r_angle_refined_deg	1.799
r_nbtor_refined	0.322
r_symmetry_xyhbond_nbd_refined	0.219
r_symmetry_nbd_refined	0.215
r_nbd_refined	0.213
r_xyhbond_nbd_refined	0.162
r_chiral_restr	0.12
r_gen_planes_refined	0.012
r_bond_refined_d	0.01

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2358
Nucleic Acid Atoms
Solvent Atoms	322
Heterogen Atoms	38

Software

Software
Software Name	Purpose
REFMAC	refinement
REFMAC	refinement
Aimless	data scaling
XDS	data reduction
PHASER	phasing

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729.