Cat. No. 2267

Lactacystin C15H24N2O7S [133343-34-7]

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Chemical Name: (2R,3S,4R)-3-Hydroxy-2-[(1S)-1-hydroxy-2-methylpropyl]-4-methyl-5-oxo-2-pyrrolidinecarboxy-N-acetyl-L-cysteine thioester

Biological Activity

A cell-permeable, potent and selective proteasome inhibitor. A Streptomyces metabolite that is thought to bind irreversibly to the active site N-terminal threonine residue of the catalytic β-subunit of the 20S proteasome, thereby inhibiting its chymotrypsin and trypsin-like activities. Induces neurite outgrowth in Neuro 2a neuroblastoma cells and has been reported to induce apoptosis in human monoblast U937 cells. Also inhibits NF-κB activation (IC50 = 10 μM).

Technical Data

Soluble to 10 mM in water
Desiccate 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

Certificate of Analysis / Product Datasheet
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References are publications that support the products' biological activity.

Bellas et al (1997) Inhibition of NF-κB activity induces apoptosis in murine hepatocytes. Am.J.Pathol. 151 891. PMID: 9327720.

Fenteany et al (1995) Inhibition of proteasome activities and subunit-specific amino-terminal threonine modification by lactacystin. Science 268 726. PMID: 7732382.

Omura et al (1991) Lactacystin, a novel microbial metabolite, induces neuritogenesis of neuroblastoma cells. J.Antibiot. 44 113. PMID: 1848215.

If you know of a relevant reference for Lactacystin please let us know.

Citations are publications that use Tocris products. Selected citations for Lactacystin include:

Wen et al (2015) FBG1 Is the Final Arbitrator of A1AT-Z Degradation. PLoS One 10 e0135591. PMID: 26295339.

Ren et al (2013) A critical role for protein degradation in the nucleus accumbens core in cocaine reward memory. Neuropsychopharmacology 38 778. PMID: 23303053.

Do you know of a great paper that uses Lactacystin from Tocris? If so please let us know.

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Keywords: Lactacystin, supplier, Cell-permeable, potent, selective, proteasome, inhibitors, inhibits, Proteasome, Proteinases, Proteases, Tocris Bioscience, Proteasome Inhibitor products

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