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E3652

Sigma-Aldrich

Epoxomicin

≥95% (HPLC), solid

Synonyme(s) :

N-Acetyl-N-methyl-L-isoleucyl-L-isoleucyl-N-[(1S)-3-methyl-1-[[(2R)-2-methyloxiranyl]carbonyl]butyl]-L-threoninamide

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About This Item

Numéro CAS:
134381-21-8
Numéro MDL:
MFCD03791061
Code UNSPSC :
12352202
ID de substance PubChem :
329799052
Nomenclature NACRES :
NA.77

Niveau de qualité

100

Pureté

≥95% (HPLC)

Forme

solid

Température de stockage

−20°C

Chaîne SMILES 

CC[C@H](C)[C@H](NC(=O)[C@H]([C@@H](C)CC)N(C)C(C)=O)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CC(C)C)C(=O)[C@@]1(C)CO1

InChI

1S/C28H50N4O7/c1-11-16(5)21(30-27(38)23(17(6)12-2)32(10)19(8)34)25(36)31-22(18(7)33)26(37)29-20(13-15(3)4)24(35)28(9)14-39-28/h15-18,20-23,33H,11-14H2,1-10H3,(H,29,37)(H,30,38)(H,31,36)/t16-,17-,18+,20-,21-,22-,23-,28+/m0/s1

Clé InChI

DOGIDQKFVLKMLQ-JTHVHQAWSA-N

Description générale

Epoxomicin is a linear peptide consisting of a threonine or serine residue with α′, β′-epoxyketone derived from leucine or a γ,δ-dehydroleucine. It is a natural product isolated from Actinomyces sp., and is a cell-permeable, potent, selective and irreversible proteasome inhibitor.

Application

Epoxomicin has been used:
  • as an ubiquitin–proteosome system (UPS) inhibitor in pheochromocytoma PC12 cells
  • as a proteasome inhibitor in mammary epithelial MCF-10A cells
  • as a proteasome inhibitor in chymotryptic assay in cardiomyocytes

Actions biochimiques/physiologiques

Epoxomicin binds covalently to the catalytic subunits of proteasome. It forms an adduct with target proteins. It inhibits chymotrypsin-like activity of the proteasome. Epoxomicin also inhibits the nuclear factor κ light chain enhancer of activated B cells (NF-κB) mediated proinflammatory signalling pathway. It is also a potent antitumor and anti-inflammatory agent.
Epoxomicin, a natural product isolated from Actinomyces sp., is a cell-permeable, potent, selective and irreversible proteasome inhibitor.

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)

Certificats d'analyse (COA)

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The selective proteasome inhibitors lactacystin and epoxomicin can be used to either up-or down-regulate antigen presentation at nontoxic doses
Schwarz K, et al.
Journal of Immunology, 164(12), 6147-6157 (2000)
L Meng et al.
Proceedings of the National Academy of Sciences of the United States of America, 96(18), 10403-10408 (1999-09-01)
The proteasome regulates cellular processes as diverse as cell cycle progression and NF-kappaB activation. In this study, we show that the potent antitumor natural product epoxomicin specifically targets the proteasome. Utilizing biotinylated-epoxomicin as a molecular probe, we demonstrate that epoxomicin
Epoxomicin, a potent and selective proteasome inhibitor, exhibits in vivo antiinflammatory activity
Meng L, et al.
Proceedings of the National Academy of Sciences of the USA, 96(18), 10403-10408 (1999)
Differential degradation of full-length and cleaved ataxin-7 fragments in a novel stable inducible SCA7 model
Yu X, et al.
Journal of Molecular Neuroscience, 47(2), 219-233 (2012)
Kyung Bo Kim et al.
Natural product reports, 30(5), 600-604 (2013-04-12)
The initial enthusiasm following the discovery of a pharmacologically active natural product is often fleeting due to the poor prospects for its ultimate clinical application. Despite this, the ever-changing landscape of modern biology has a constant need for molecular probes
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