Specific inhibitor of the chymotrypsin-like activity of the 20S proteasome (IC50=100 nM with Z-LLL-AMC as substrate).1 Also inhibits calpain (IC50=1.25 µM)1 Suppresses gastric cancer cell proliferation and induces macro-autophagy2. Activates stress kinases and induces Hsp72.3 Induces neurite outgrowth.1 Blocks NFkappaB activation by blocking IkappaB proteolysis (IC50=3 µM).4 Cell permeable.
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