E3652
Epoxomicin
≥95% (HPLC), solid
Synonym(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
CAS Number:
NACRES:
NA.77
PubChem Substance ID:
UNSPSC Code:
12352202
MDL number:
Assay:
≥95% (HPLC)
Form:
solid
Quality Level
assay
≥95% (HPLC)
form
solid
storage temp.
−20°C
SMILES string
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
InChI key
DOGIDQKFVLKMLQ-JTHVHQAWSA-N
General description
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
Biochem/physiol Actions
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.
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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Related Content
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)
Epoxomicin, a potent and selective proteasome inhibitor, exhibits in vivo antiinflammatory activity.
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)