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324521

Sigma-Aldrich

Eeyarestatin I

A cell-permeable oxo-imidazolidinyl-hydroxyurea that localizes to ER, where it interacts with AAA ATPase p97 via its nitrofuran-containing moiety, without exhibiting affinity toward Hsp70 / ATPase NSF

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Synonym(s):
Eeyarestatin I, 1-(4-Chloro-phenyl)-3-(3-(4-chloro-phenyl)-5,5-dimethyl-1-(3-(5-nitro-furan-2-yl)-allyldiene-hydrazinocarbonylmethyl)-2-oxo-imidazolidin-4-yl)-1-hydroxyl-urea, EerI, ES1, Valosin-containing Protein Inhibitor II, VCP Inhibitor II, ERAD Inhibitor II, p97 Inhibitor II
Empirical Formula (Hill Notation):
C27H25Cl2N7O7
CAS Number:
Molecular Weight:
630.44

Quality Level

assay

≥90% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

light yellow-orange

solubility

DMSO: 100 mg/mL

shipped in

ambient

storage temp.

2-8°C

InChI

1S/C27H25Cl2N7O7/c1-27(2)24(35(40)25(38)31-19-9-5-17(28)6-10-19)34(20-11-7-18(29)8-12-20)26(39)33(27)16-22(37)32-30-15-3-4-21-13-14-23(43-21)36(41)42/h3-15,24,40H,16H2,1-2H3,(H,31,38)(H,32,37)

InChI key

JTUXTPWYZXWOIB-UHFFFAOYSA-N

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328501324517480065
Eeyarestatin I A cell-permeable oxo-imidazolidinyl-hydroxyurea that localizes to ER, where it interacts with AAA ATPase p97 via its nitrofuran-containing moiety, without exhibiting affinity toward Hsp70 / ATPase NSF

324521

Eeyarestatin I

ERO1 Inhibitor II, EN460

328501

ERO1 Inhibitor II, EN460

Necrostatin-1 Necrostatin-1, CAS 4311-88-0, is a cell-permeable, potent, and selective blocker of necroptosis (EC₅₀ = 494 nM in FADD-deficient Jurkat cells treated with TNF-α).

480065

Necrostatin-1

assay

≥90% (HPLC)

assay

≥99% (HPLC)

assay

≥98% (sum of two isomers, HPLC)

assay

≥95% (HPLC)

Quality Level

100

Quality Level

100

Quality Level

100

Quality Level

100

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

manufacturer/tradename

Calbiochem®

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

solubility

DMSO: 100 mg/mL

solubility

DMSO: 50 mg/mL

solubility

DMSO: 100 mg/mL

solubility

DMSO: 10 mg/mL, methanol: 5 mg/mL

General description

A cell-permeable oxo-imidazolidinyl-hydroxyurea that preferentially localizes to ER, where it interacts with AAA (ATPase associated with diverse cellular activities) ATPase p97 (Kd = 5 - 10 µM) via its nitrofuran-containing moiety, without exhibiting affinity toward Hsp70 or AAA ATPase NSF (N-methylmaleimide-sensitive factor). Evidence indicates that EerI cellular metabolite, but not EerI itself, is responsible for the inhibition of ER membrane translocon sec61 complex-mediated transfer of newly synthesized polypeptide, resulting in a blockage of ER-mediated posttranslational glycosylation and signal peptide removal (Effective conc. = 8 µM in HepG2 and HeLa cultures). Ether independent or as a consequence of the early effect on sec61 complex, EerI culture treatment also induces a selective dissociation of an 180 kDa protein from the atx3-containing p97/VCP (Valosin-containing protein) complex and a blockage of the complex-associated deubiquitination of ERAD (ER-associated protein degradation) substrates in a reversible manner, resulting in an accumulation of polyubiquitinated proteins (Effective conc. = 10 µM in A9 and 293T cultures). EerI culture treatment (10 µM) is also demonstrated to selectively induce cytotoxicity in lymphoid cell lines, BJAB, HBL-2, JEKO-1, Jurkat, KMS-12, MINO, as well as primary leukemia cells from CLL (chronic lymphocytic leukemia) patients, but not PBMC from healthy donors, by upregulating the BH3-only pro-apoptotic protein NOXA in cancer cells via ATF3/4 activation and a downregulation of H2A ubiquitination. Unlike DBeQ (Cat. No. 506190), EeRI does not inhibit p97 ATPase activity.
A cell-permeable oxo-imidazolidinyl-hydroxyurea whose cellular metabolite is shown to effectively inhibit the ER membrane translocon sec61 complex-mediated transfer of newly synthesized polypeptide, resulting in a blockage of ER-mediated posttranslational glycosylation and signal peptide removal (Effective conc. = 8 µM in HepG2 and HeLa cultures). Ether independent or as a consequence of the early effect on sec61 complex, EerI culture treatment also induces a selective dissociation of an 180 kDa protein from the atx3-containing p97/VCP (Valosin-containing protein) ATPase complex and a blockage of the p97 complex-associated deubiquitination of ERAD (ER-associated protein degradation) substrates in a reversible manner, resulting in an accumulation of polyubiquitinated proteins (Effective conc. = 10 µM in A9 and 293T cultures). EerI culture treatment (10 µM) is also demonstrated to selectively induce cytotoxicity in lymphoid cell lines, BJAB, HBL-2, JEKO-1, Jurkat, KMS-12, MINO, as well as primary leukemia cells from CLL (chronic lymphocytic leukemia) patients, but not PBMC from healthy donors, by upregulating the BH3-only pro-apoptotic protein NOXA in cancer cells via ATF3/4 activation and a downregulation of H2A ubiquitination.

Packaging

Packaged under inert gas

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.
It is recommended to prepare a stock solution for 3 month use each time and store the unreconstituted material in solid form, protected from moisture and preferably under inert gas, for best long-term stability during storage.

Other Notes

Chou, T.F., et al. 2011. Proc. Natl. Acad. Sci. USA108, 4834.
Wang. Q, et al. 2010. PLoS ONE5, e15479.
Cross, B.C.S., et al. 2009. J. Cell. Sci.122, 4393.
Wang, Q., et al. 2009. Proc. Natl. Acad. Sci. USA106, 2200.
Wang, Q., et al. 2008. J. Biol. Chem.283, 7445.
Fiebiger, E., et al. 2004. Mol. Biol. Cell15, 1635.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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