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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

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)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Consulter la Bibliothèque de documents

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)
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
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
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)
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