PSI White solid. A cell-permeable, reversible inhibitor of the chymotrypsin-like activity of the multicatalytic proteinase complex (MCP; 20S proteasome) in HT4 cells. Causes the accumulation of ubiquitinated proteins in neuronal cells. Prevents the activation of NF-kB in response to TNF-a and Okadaic Acid (Cat. No. 495604) through inhibition of IkB-a degradation. Purity: ≥90% by HPLC. Z-Ile-Glu(OtBu)-Ala-Leu-CHO Ref.: Griscavage, J.M., et al. 1996. Proc. Natl. Acad. Sci. USA 93, 3308. Mori, S., et al. 1995. J. Biol. Chem. 270, 29447. Figueiredo-Pereira, M.E., et al. 1994. J. Neurochem. 63, 1578. Traenckner, E.B., et al. 1994. EMBO J. 13, 5433. |
