ISDA

X-RAY DIFFRACTION

Crystallization Details

Method	pH	Temprature	Details
X-RAY DIFFRACTION	7.0	298	10mg/ml Covid-19Mpro (25 mM Hepes pH 7.5, 150 mM NaCl, 1 mM EDTA) was inhibited at 10X molar excess and incubated on ice for 1hr, solution was spun down for 10min at 10,000 rpm. Crystals were grown by hanging-drop vapor diffusion method at 18C. by mixing 1:1, 1:2 and 2:1 ratio of protein to well solution. Crystal grew out of well solution composed of 25% w/v Peg 1500, 100 mM MIB buffer pH 7.0, from PACT screen (Nextal Biotechnologies).

Unit Cell:

a: 114.510 Å b: 53.744 Å c: 45.594 Å α: 90.000° β: 101.530° γ: 90.000°

Symmetry:

Space Group: C 1 2 1

Crystal Properties:

Matthew's Coefficient: 2.03 Solvent Content: 39.47

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	THROUGHOUT	2.000	18.7700	17064	890	92.0000	0.1959	0.2359	42.2200

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
2.000	56.100	92.200	0.078	?	15.500	7.000	?	17088	?	?	39.190

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	2.000	2.100	62.100	?	?	?	5.100	?

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 17-ID	1.5418	APS	17-ID

Software