ISDA

8UND

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	6.0	279	Briefly, 1 uL of ~110 uM SARS-CoV-2 3CLpro in 25 mM HEPES pH 7.5, 2.5 mM DTT containing ~150 uM GRL-190-21 was mixed with 2 uL of reservoir solution which contained a constant concentration of 3 mM DTT, 50 mM MES pH 6.0, 1% MPD, and varying concentrations of PEG-10,000 and KCl.

Unit Cell:

a: 45.848 Å b: 63.968 Å c: 105.240 Å α: 90.000° β: 90.000° γ: 90.000°

Symmetry:

Space Group: P 21 21 2

Crystal Properties:

Matthew's Coefficient: 2.28 Solvent Content: 46.08

Refinement Statistics

Diffraction ID	Structure Solution Method	Cross Validation Method	Resolution Limit (High)	Resolution Limit (Low)	Number of Reflections (Observed)	Number of Reflections (R-free)	Percent Reflections (Observed)	R-Work	R-Free	Mean Isotropic
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	FREE R-VALUE	1.90	35.08	25130	1257	99.69	0.1531	0.2025	25.85

Data Collection

Overall

Resolution Limit (High)	Resolution Limit (Low)	Percent Possible (Observed)	R Merge I (Observed)	R Sym I (Observed)	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
1.90	35.08	99.75	0.1174	?	17.42	9.5	?	25135	?	?	20.18

Highest Resolution Shell

#	Resolution Limits (Low)	Resolution Limits (High)	Percent Possible (All)	Percent Possible (Observed)	R-Sym I (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
1	1.90	1.968	99.43	?	?	3.18	9.3	?

Diffraction

Diffraction experiment

Crystal ID	Scattering Type	Data Collection Temprature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1		100 K			?

Radiation Source

Source	Type	Wavelength List	Synchrotron Site	Beamline
SYNCHROTRON	APS BEAMLINE 21-ID-F	0.97872	APS	21-ID-F

Software