Cat. No. 4045

PSI C32H50N4O8 [158442-41-2]

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Chemical Name: N-[(Phenylmethoxy)carbonyl]-L-isoleucyl-L-α-glutamyl-tert-butyl ester-N-[(1S)-1-formyl-3-methylbutyl]-L-alaninamide

Biological Activity

Proteasome inhibitor; inhibits chymotrypsin-like activity of the proteasome. Causes dopaminergic cell death in vitro. Prevents activation of NF-κB in response to TNF-α and okadaic acid (Cat. No. 1136) by inhibiting IκB-α degradation. Also inhibits NO production by LPS-activated macrophages.

Technical Data

Soluble to 30 mM in DMSO
>90 %
Store at -20°C

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.
All Tocris products are intended for laboratory research use only.

Certificate of Analysis / Product Datasheet / Safety Datasheet

References are publications that support the products' biological activity.

Bukhatwa et al (2009) An immunohistochemical and stereological analysis of PSI-induced nigral neuronal degeneration in the rat. J.Neurochem. 109 52. PMID: 19187437.

Griscavage et al (1996) Inhibitors of the proteasome pathway interfere with induction of nitric oxide synthase in macrophages by blocking activation of transcription factor NF-κB. Proc.Natl.Acad.Sci.USA 93 3308.

Traenckner et al (1994) A proteasome inhibitor prevents activation of NF-κB and stabilizes a newly phosphorylated form of IκB-α that is still bound to NF-κB. EMBO J. 13 5433. PMID: 7957109.

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Citations are publications that use Tocris products.

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View Related Products by Product Action

Keywords: PSI, supplier, proteasome, inhibitors, inhibits, Nuclear, Factor, Kappa, B, NF-κB, NF-kappaB, NF-kB, activation, Tocris Bioscience, Proteasome Inhibitor products

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