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N-Ethylmaleimide (CAS 128-53-0)

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Alternate Names:
1-Ethyl-1H-pyrrole-2,5-dione; NEM
Application:
N-Ethylmaleimide is a protein thiol modifier which inhibits apoptotic DNA fragmentation
CAS Number:
128-53-0
Purity:
≥98%
Molecular Weight:
125.13
Molecular Formula:
C6H7NO2
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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N-Ethylmaleimide (NEM) is an electrophilic small molecule, used in biological research to alkylate and covalently modify nucleophilic thiol residues on proteins. Covalent modification of the active-site thiol residue of cysteine proteases ablates enzyme function. N-Ethylmaleimide also demonstrates inhibition of Mg2+-dependent internucleosomal DNA fragmentation, a defining occurrence of the apoptotic pathway. Other thiophilic species such as Hg2+ and Cd2+ inhibit fragmentation as well, indicating that a thiol moiety is for this degradation to occur. NADP-dependent isocitrate dehydrogenase in yeast is disabled by N-Ethylmaleimide, showing alkylation of a cysteine residue followed by a slower alkylation of a lysine residue on the enzyme. N-Ethylmaleimide is an activator of PLA2.


N-Ethylmaleimide (CAS 128-53-0) References

  1. The mitochondrial p55 accessory subunit of human DNA polymerase gamma enhances DNA binding, promotes processive DNA synthesis, and confers N-ethylmaleimide resistance.  |  Lim, SE., et al. 1999. J Biol Chem. 274: 38197-203. PMID: 10608893
  2. N-Ethylmaleimide inhibits platelet-derived growth factor BB-stimulated Akt phosphorylation via activation of protein phosphatase 2A.  |  Yellaturu, CR., et al. 2002. J Biol Chem. 277: 40148-55. PMID: 12171932
  3. Okadaic acid inhibition of KCl cotransport. Evidence that protein dephosphorylation is necessary for activation of transport by either cell swelling or N-ethylmaleimide.  |  Jennings, ML. and Schulz, RK. 1991. J Gen Physiol. 97: 799-817. PMID: 1647439
  4. Detection of glutathione in whole blood after stabilization with N-ethylmaleimide.  |  Giustarini, D., et al. 2011. Anal Biochem. 415: 81-3. PMID: 21545786
  5. Analysis of GSH and GSSG after derivatization with N-ethylmaleimide.  |  Giustarini, D., et al. 2013. Nat Protoc. 8: 1660-9. PMID: 23928499
  6. Purification of an N-ethylmaleimide-sensitive protein catalyzing vesicular transport.  |  Block, MR., et al. 1988. Proc Natl Acad Sci U S A. 85: 7852-6. PMID: 3186695
  7. Intramitochondrial phospholipase activity and the effects of Ca2+ plus N-ethylmaleimide on mitochondrial function.  |  Pfeiffer, DR., et al. 1979. J Biol Chem. 254: 11485-94. PMID: 40983
  8. Modulation of Ca2+ channels by PTX-sensitive G-proteins is blocked by N-ethylmaleimide in rat sympathetic neurons.  |  Shapiro, MS., et al. 1994. J Neurosci. 14: 7109-16. PMID: 7525895
  9. DNA cleavage in rat liver nuclei activated by Mg2+ or Ca2+ + Mg2+ is inhibited by a variety of structurally unrelated inhibitors.  |  Cain, K., et al. 1994. Biochem Cell Biol. 72: 631-8. PMID: 7654337
  10. N-ethylmaleimide profiling of yeast NADP-dependent isocitrate dehydrogenase.  |  Huang, YC., et al. 1995. Arch Biochem Biophys. 316: 485-92. PMID: 7840654
  11. N-ethyl maleimide stimulates arachidonic acid release through activation of the signal-responsive phospholipase A2 in endothelial cells.  |  Neve, EP., et al. 1995. Biochem Pharmacol. 49: 57-63. PMID: 7840783
  12. Multi-step DNA cleavage in rat liver nuclei is inhibited by thiol reactive agents.  |  Cain, K., et al. 1995. FEBS Lett. 358: 255-61. PMID: 7843412
  13. Structural features which control folding of homologous proteins in cell-free translation systems. The effect of a mitochondrial-targeting presequence on aspartate aminotransferase.  |  Mattingly, JR., et al. 1993. J Biol Chem. 268: 26320-7. PMID: 8253754
  14. The characterization of glutathione S-transferases from rat olfactory epithelium.  |  Banger, KK., et al. 1993. Biochem J. 290 (Pt 1): 199-204. PMID: 8439289
  15. Determination of hydrogen sulfide with 5,5'-dithiobis-(2-nitrobenzoic acid), N-ethylmaleimide, and parachloromercuribenzoate.  |  Nashef, AS., et al. 1977. Anal Biochem. 79: 394-405. PMID: 869184

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

N-Ethylmaleimide, 1 g

sc-202719A
1 g
$22.00

N-Ethylmaleimide, 5 g

sc-202719
5 g
$68.00

N-Ethylmaleimide, 25 g

sc-202719B
25 g
$210.00

N-Ethylmaleimide, 100 g

sc-202719C
100 g
$780.00

N-Ethylmaleimide, 250 g

sc-202719D
250 g
$1880.00