565771
γ-Secretase Inhibitor X
≥90% (HPLC), liquid, γ-secretase inhibitor, Calbiochem®
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InSolution γ-Secretase Inhibitor X, L-685,458, {1S-Benzyl-4R-[1-(1S-carbamoyl-2-phenethylcarbamoyl)-1S-3-methylbutylcarbamoyl]-2R-hydroxy-5-phenylpentyl}carbamic Acid tert-butyl Ester
C39H52N4O6
Recommended Products
Quality Level
Assay
≥90% (HPLC)
form
liquid
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
desiccated
protect from light
shipped in
ambient
storage temp.
−20°C
General description
A cell-permeable hydroxyethylene dipeptide isostere that acts as a highly specific and a potent inhibitor of γ-secretase (Aβtotal IC50 = 17 nM, Aβ40 IC50 = 48 nM, and Aβ42 IC50 = 67 nM in SHSY5Y cells overexpressing spβA4CTF). Binds to presenilin and blocks Notch intracellular domain production. Functions as a transition state analog mimic at the catalytic site of an aspartyl protease, however, it exhibits over 100-fold greater selectivity for γ-secretase than for cathepsin D.
A cell-permeable hydroxyethylene dipeptide isostere that acts as a potent and highly specific inhibitor of γ-secretase (Aβ total IC50 = 17 nM; Aβ40 IC50 = 48 nM; and Aβ42 IC50 = 67 nM in SH-SY5Y cells overexpressing spβA4CTF). Binds to presenilin and blocks Notch intracellular domain production. Also reported to block the formation of εCTF, resulting in the accumulation of α- and βCTF. Functions as a transition state analog mimic at the catalytic site of an aspartyl protease, however, it exhibits over 100-fold greater selectivity for γ-secretase than for cathepsin D.
Biochem/physiol Actions
Cell permeable: yes
Primary Target
Aβtotal
Aβtotal
Product does not compete with ATP.
Reversible: no
Target IC50: Aβtotal 17 nM, Aβ40 48 nM, and Aβ42 67 nM in SHSY5Y cells overexpressing spβA4CTF
Packaging
Packaged under inert gas
Warning
Toxicity: Standard Handling (A)
Physical form
A 1 mM (250 µg in 372 µl or 500 µg in 744 µl) solution in DMSO.
Reconstitution
Following initial thaw, aliquot and freeze (-20°C).
Other Notes
Weidemann, A., et al. 2002. Biochemistry41, 2825.
Doerfler, P., et al. 2001. Proc. Natl. Acad. Sci. USA98, 9312.
Li, Y.M., et al. 2000. Proc. Natl. Acad. Sci. USA97, 6138.
Shearman, M.S., et al. 2000. Biochemistry39, 8698.
Doerfler, P., et al. 2001. Proc. Natl. Acad. Sci. USA98, 9312.
Li, Y.M., et al. 2000. Proc. Natl. Acad. Sci. USA97, 6138.
Shearman, M.S., et al. 2000. Biochemistry39, 8698.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
WGK
WGK 1
Flash Point(F)
closed cup
Flash Point(C)
closed cup
Certificates of Analysis (COA)
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Cancer, 121(3), 432-440 (2014-09-25)
Aberrant Notch activation confers a proliferative advantage to many human tumors, including melanoma. This phase 2 trial assessed the antitumor activity of RO4929097, a gamma-secretase inhibitor of Notch signaling, with respect to the progression-free and overall survival of patients with
eLife, 11 (2022-05-18)
Cleavage of membrane proteins in the lipid bilayer by intramembrane proteases is crucial for health and disease. Although different lipid environments can potently modulate their activity, how this is linked to their structural dynamics is unclear. Here, we show that
The Journal of biological chemistry, 299(4), 103027-103027 (2023-02-23)
Imbalances in the amounts of amyloid-β peptides (Aβ) generated by the membrane proteases β- and γ-secretase are considered as a trigger of Alzheimer's disease (AD). Cell-free studies of γ-secretase have shown that increasing membrane thickness modulates Aβ generation but it
Enzyme-substrate interface targeting by imidazole-based I?-secretase modulators activates I?-secretase and stabilizes its interaction with APP.
The Embo Journal, 41, e111084-e111084 (2022)
Frontiers in immunology, 13, 832159-832159 (2022-03-01)
As the major hub of metabolic activity and an organelle sequestering pro-apoptogenic intermediates, mitochondria lie at the crossroads of cellular decisions of death and survival. Intracellular calcium is a key regulator of these outcomes with rapid, uncontrolled uptake into mitochondria
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