Skip to Content
MilliporeSigma
All Photos(1)

Documents

662125

Sigma-Aldrich

Ubiquitin Isopeptidase Inhibitor I, G5

The Ubiquitin Isopeptidase Inhibitor I, G5, also referenced under CAS 108477-18-5, controls the biological activity of Ubiquitin Isopeptidase. This small molecule/inhibitor is primarily used for Protease Inhibitors applications.

Synonym(s):

Ubiquitin Isopeptidase Inhibitor I, G5, 3,5-bis((4-Nitrophenyl)methylene)-1,1-dioxide, tetrahydro-4H-thiopyran-4-one, NSC-144303

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C19H14N2O7S
CAS Number:
Molecular Weight:
414.39
UNSPSC Code:
12352200
NACRES:
NA.54

Quality Level

assay

≥97% (HPLC)

form

solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

yellow

solubility

DMSO: 10 mg/mL

shipped in

ambient

storage temp.

2-8°C

General description

A cell-permeable cross-conjugated α,β-unsaturated dienone compound that induces caspase activation and apoptosis (IC50 = 1.76 and 1.6 µM in E1A and E1A/C9DN cells, respectively) via the apoptosome-independent mitochondrial pathway by selectively inhibiting ubiquitin isopeptidase activity (IC50 = ~ 30 µM). The cellular expression of Bax and Bak is essential for G5-activated apoptosis, while Bcl-2 appears to protect cells against the effect of G5. G5 is more potent than, but otherwise exhibits similar pharmacological effects as, Ubiquitin Isopeptidase Inhibitor II, F6 (Cat. No. 662126). At higher concentrations (5-10 µM), shown to induce necrosis in apoptosis-resistant MEFs-DKO.
A cell-permeable cross-conjugated α,β-unsaturated dienone compound that induces caspase activation and apoptosis (IC50 = 1.76 and 1.6 µM in E1A and E1A/C9DN cells, respectively) via the apoptosome-independent mitochondrial pathway by selectively inhibiting ubiquitin isopeptidase activity (IC50 ~30 µM). The cellular expression of Bax and Bak is essential for G5-activated apoptosis, while Bcl-2 appears to protect cells against the effect of G5. G5 is more potent than, but otherwise exhibits similar pharmacological effects as, Ubiquitin Isopeptidase Inhibitor II, F6 (Cat. No. 662126). At higher concentrations (5-10 µM), shown to induce necrosis in apoptosis-resistant MEFs-DKO.

Biochem/physiol Actions

Cell permeable: yes
Primary Target
Ubiquitin isopeptidase activity
Product does not compete with ATP.
Reversible: no
Target IC50: ~ 30 µM against ubiquitin isopeptidase activity; 1.76 and 1.6 µM for the induction of caspase activation and apoptosis in E1A and E1A/C9DN cells, respectively

Packaging

Packaged under inert gas

Warning

Toxicity: Irritant (B)

Reconstitution

Unstable in DMSO; reconstitute just prior to use.

Other Notes

Fontanini, A., et al. 2009. J. Biol. Chem.284, 8369.
Aleo, E., et al. 2006. Cancer Res.66, 9235.

Legal Information

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

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Mustafa Yalcinkaya et al.
Journal of lipid research, 65(4), 100534-100534 (2024-03-25)
The deposition of cholesterol-rich lipoproteins in the arterial wall triggers macrophage inflammatory responses, which promote atherosclerosis. The NLRP3 inflammasome aggravates atherosclerosis; however, cellular mechanisms connecting macrophage cholesterol accumulation to inflammasome activation are poorly understood. We investigated the mechanisms of NLRP3

Related Content

Select different protease inhibitor types based on your needs to prevent protein degradation during isolation and characterization and safeguard proteins in sample prep.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service