Table 3.

Yields of pure native 3CL^pro obtained in different media

Medium	Yield (mg L−1)
Super broth	122
LB	82
MJ9 (minimal medium)	28

Protein was spectrophotometrically quantified assuming MW = 33,796 Da and ε₂₈₀ = 32,890 A.U. M⁻¹ cm⁻¹