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A1341

Sigma-Aldrich

N-Acetyl-Glu-Ser-Met-Asp-al

≥90% (HPLC), powder

Synonym(s):

Ac-ESMD-CHO

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About This Item

Empirical Formula (Hill Notation):
C19H30N4O10S
CAS Number:
191338-87-1
Molecular Weight:
506.53
MDL number:
MFCD01318859
UNSPSC Code:
12352202
PubChem Substance ID:
329770361
NACRES:
NA.77

Assay

≥90% (HPLC)

form

powder

color

white

solubility

H2O: 1 mg/mL

storage temp.

−20°C

SMILES string

CSCC[C@H](NC(=O)[C@H](CO)NC(=O)[C@H](CCC(O)=O)NC(C)=O)C(=O)N[C@@H](CC(O)=O)C=O

InChI

1S/C19H30N4O10S/c1-10(26)20-12(3-4-15(27)28)18(32)23-14(9-25)19(33)22-13(5-6-34-2)17(31)21-11(8-24)7-16(29)30/h8,11-14,25H,3-7,9H2,1-2H3,(H,20,26)(H,21,31)(H,22,33)(H,23,32)(H,27,28)(H,29,30)/t11-,12-,13-,14-/m0/s1

InChI key

TVTYMGFOGZRIHG-XUXIUFHCSA-N

General description

N-Acetyl-Glu-Ser-Met-Asp-aldehyde (Ac-ESMD-CHO) is a tetrapeptide analog that act to inhibit the activity of caspase-3 and caspase-7 proteins, which are involved in apoptosis. Ac-ESMD-CHO has been shown to block formation of the caspase-3 p17 and p12 subunits, induce accumulation of the p20 precursor peptide, inhibit 25-hydroxycholesterol-induced apoptosis in rat Sertoli cells and also to bind caspase-7.

Biochem/physiol Actions

In the caspase-3 precursor, procaspase-3, the ESMD amino acid sequence has been identified as a cleavage site for producing the p17 and p12 subunits of mature caspase 3; Ac-ESMD-CHO has been shown to inhibit the protease that cleaves procaspase-3 at this site. Ac-ESMD-CHO binds caspase-7 and inhibits with a Ki of approximately 1300 nM, which makes it a weaker inhibitor than other inhibitor tetrapeptide analogs.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Johnson Agniswamy et al.
The FEBS journal, 274(18), 4752-4765 (2007-08-19)
Many protein substrates of caspases are cleaved at noncanonical sites in comparison to the recognition motifs reported for the three caspase subgroups. To provide insight into the specificity and aid in the design of drugs to control cell death, crystal
Dominique Le Goff et al.
Reproductive toxicology (Elmsford, N.Y.), 21(3), 329-334 (2005-11-02)
The aim of the present study was to determine whether or not apoptosis occurs in Sertoli cells in presence of 25-hydroxycholesterol, an oxysterol derived from cholesterol-containing foods or endogenous oxidation. Here, we provide evidence that 25-hydroxycholesterol can induce cultured Sertoli
Z Han et al.
The Journal of biological chemistry, 272(20), 13432-13436 (1997-05-16)
The apoptotic cysteine protease, caspase-3, is expressed in cells as an inactive 32-kDa precursor from which 17 kDa (p17) and 12 kDa (p12) subunits of the mature caspase-3 are proteolytically generated during apoptosis. Two amino acid sequences, ESMD downward arrowS

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