Table 2. In Vitro IC₅₀ Values (M) against Proteolytic Activity of Cysteine Proteases^a.

^aIncubation of cysteine protease and inhibitor for 30 min prior to addition of fluorogenic substrate. Protease concentrations: hCatK (150 pM), hCatL (5 pM), hCatS (1 nM), hCatV (25 pM), hCatB (1 nM), and papain (3 nM). Mean ± SD for a single representative experiment (triplicate measurement). NA = not available. More details are available in the SI.