CAS 128-53-0: N-Ethylmaleimide

N-Ethylmaleimide is a protein thiol modifier which inhibits apoptotic DNA fragmentation. It is a sulfhydryl reagent and finds application in experimental biochemical studies as well as in enzymology. It is involved in the modification of cysteine residues in proteins and peptides. It acts as a Michael acceptor and reacts with nucelophiles like thiols. It is employed in the inhibition of Mg2+ dependent internucleosomal DNA fragmentation. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

N-Ethylmaleimide

Cysteine alkylating agent N-Ethylmaleimide is a protein thiol modifier which inhibits apoptotic DNA fragmentation. It is a sulfhydryl reagent and finds application in experimental biochemical studies as well as in enzymology. It is involved in the modification of cysteine residues in proteins and peptides. It acts as a Michael acceptor and reacts with nucelophiles like thiols. It is employed in the inhibition of Mg2+-dependent internucleosomal DNA fragmentation.This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

N-Ethyl maleimide is a cytosolic calcium chelator that binds to the calcium ions in the cells. It has been shown to inhibit the enzymes of fatty acid synthesis and phospholipase A2, which are involved in lipid metabolism. N-Ethyl maleimide is an irreversible enzyme inhibitor and can be used as a chemical tool for cell sample preparation. The reaction with N-ethyl maleimide leads to a decrease in water permeability of the cell membrane. This chemical also has a high affinity for sulfhydryl groups and can therefore be used as an anti-oxidant or free radical scavenger.

N-Ethylmaleimide (NEM) is a reagent for alkylation of free sulfhydryl groups, a cysteine protease inhibitor. Cost-effective and quality-assured.

N-Ethylmaleimide

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Applications Reagent for the covalent modification of cysteine residues in proteins.NEM gives a clear solution in ethanol at 50 mg/ml. NEM dissolves in water (>50 mg in 4 ml); however, aqueous solutions are unstable. The rate of hydrolysis is pseudo-first order and significantly dependent on pH. Not a dangerous good if item is equal to or less than 1g/ml and there is less than 100g/ml in the package References Sheehan, M., et al.: J. Cell Biol., 106, 1 (1988), Vogel, K., et al.: J. Biol. Chem., 275, 2959 (2000), Ramos, C., et al.: Biochem. J., 400, 393 (2006),