Table 2. Kinetic Parameters of Inhibition of SDS-Activated h20S Proteasome.

	compound 4		compound 7
kinetic parameter	value	SEM	value	SEM
Vmax [s–1]	13.46	0.91	13.64	0.88
KM [μM]	14.02	5.55	17.42	5.79
Ki [μM]	0.0101	0.0055	0.0048	0.0026
β	4.98 × 106	4.20 × 108	1347	1370
α	180878	7.65 × 106	4620	2963