Experiment: 7SFI

X-RAY DIFFRACTION

Starting Model(s)

Initial Refinement Model(s)
Type	Source	Accession Code	Details
experimental model	PDB	6LZE

Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, SITTING DROP		289.15	Sitting drops consisted of 0.19 uL A:0.19 uL B: A) 5.5 mg/mL Mpro + 0.5 mM ML104 in in 20 mM Tris pH 7.3 + 2 mM DTT + 5 % DMSO B) 0.1 M MES pH 6 + 14 % w/v PEG 4000 Cryoprotectant was 30% v/v glycerol.

Crystal Properties
Matthews coefficient	Solvent content
2.26	45.54

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 45.49	α = 90
b = 63.586	β = 90
c = 105.64	γ = 90

Symmetry
Space Group	P 21 21 2

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 PILATUS 6M	Rh coated collimating mirrors, K-B focusing mirrors	2021-01-27	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	SYNCHROTRON	SSRL BEAMLINE BL9-2	0.97946	SSRL	BL9-2

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	R Sym I (Observed)	Rrim I (All)	Rpim I (All)	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	1.95	105.64	98.8	0.063	0.073	0.037	13	3.7	22730	22730

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	R Merge I (Observed)	R-Sym I (Observed)	Rrim I (All)	Rpim I (All)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.95	2.06	99.3		0.583	0.583	0.679	0.341	1.3	3.7

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	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	6LZE	1.95	35.24	21592	1099	98.36	0.1973	0.1952	0.2386	RANDOM	32.583

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]
-1.4			2.3		-0.9

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.653
r_dihedral_angle_4_deg	16.736
r_dihedral_angle_3_deg	13.985
r_dihedral_angle_1_deg	7.873
r_angle_refined_deg	1.573
r_angle_other_deg	1.317
r_chiral_restr	0.07
r_bond_refined_d	0.008
r_gen_planes_refined	0.007
r_bond_other_d	0.002

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.653
r_dihedral_angle_4_deg	16.736
r_dihedral_angle_3_deg	13.985
r_dihedral_angle_1_deg	7.873
r_angle_refined_deg	1.573
r_angle_other_deg	1.317
r_chiral_restr	0.07
r_bond_refined_d	0.008
r_gen_planes_refined	0.007
r_bond_other_d	0.002
r_gen_planes_other	0.001

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	2367
Nucleic Acid Atoms
Solvent Atoms	191
Heterogen Atoms	39

Software

Software
Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction

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.