Experiment: 7T2V

SARS CoV2 Mpro C145S mutant

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	Other		Native Mpro structure

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	6.5	295	0.1MMESpH6.5,20%v/vPEGSmear High

Crystal Properties
Matthews coefficient	Solvent content
2.13	42.14

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 61.59	α = 102.11
b = 67.51	β = 89.3
c = 77.65	γ = 106.41

Symmetry
Space Group	P 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 PILATUS3 6M	Flat Si Rh coated mirror	2021-03-21	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL12-2	0.97946	SSRL	BL12-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Merge I (Observed)	Rrim 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	2.47	38.05	96.8	0.181	0.196	0.994	8.33	6.121		40724			50.753

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	Rrim I (All)	CC (Half)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	2.47	2.53	93.6		0.879	1.02	0.656	1.73	3.861

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	Native Mpro structure	2.47	38.05	38686	2037	96.87	0.1978	0.1957	0.2016	0.237	0.2397	RANDOM	48.373

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]
0.8	0.02	-1.06	-1.64	-0.39	1.28

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_3_deg	17.094
r_dihedral_angle_2_deg	15.489
r_dihedral_angle_1_deg	7.529
r_angle_refined_deg	1.141
r_angle_other_deg	0.392
r_chiral_restr	0.051
r_bond_refined_d	0.005
r_gen_planes_refined	0.005
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	9425
Nucleic Acid Atoms
Solvent Atoms	46
Heterogen Atoms

Software

Software
Software Name	Purpose
REFMAC	refinement
XSCALE	data scaling
PDB_EXTRACT	data extraction
XDS	data reduction
MOLREP	phasing