Table 1.

M^Pro and M^Pro‐substrate complexes identified by native MS

Species	Measured Mass [Da][a]	Expected Mass [Da]	Δmass [Da]
MPro (Monomer)	33 795±3	33 796	−1
MPro (Dimer)	67 591±0.5	67 592	−1
Enzyme‐substrate complex	68 781±2	68 784	−2
Enzyme‐TSAVLQ complex	68 188±0.5	68 192	−4

[a] Uncertainty in deconvoluted mass determined using at least three charge states.