539160
Proteasome Inhibitor I
The Proteasome Inhibitor I controls the biological activity of Proteasome. This small molecule/inhibitor is primarily used for Protease Inhibitors applications.
Synonym(s):
Proteasome Inhibitor I, PSI
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About This Item
Empirical Formula (Hill Notation):
C32H50N4O8
Molecular Weight:
618.76
NACRES:
NA.77
UNSPSC Code:
12352202
Assay:
≥90% (HPLC)
Form:
solid
Storage condition:
OK to freeze
Quality Segment
assay
≥90% (HPLC)
form
solid
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
color
white
solubility
DMSO: 30 mg/mL, ethanol: 30 mg/mL, methanol: soluble
shipped in
ambient
storage temp.
−20°C
General description
A cell-permeable, reversible inhibitor of the chymotrypsin-like activity of the multicatalytic proteinase complex (MCP; 20S proteasome) in HT4 cells. Causes the accumulation of ubiquitinated proteins in neuronal cells. Prevents the activation of NF-κB in response to TNF-α and Okadaic Acid (Cat. No. 495604) through inhibition of IκB-α degradation. A 50 mM (5 mg/162 µl) solution of Proteasome Inhibitor I (Cat. No. 539161) in DMSO is also available.
Cell-permeable inhibitor of the chymotrypsin-like activity of the multicatalytic proteinase complex (MCP; 20S proteasome) in HT4 cells. Causes the accumulation of ubiquitinylated proteins in neuronal cells. Prevents NF-κB activation in response to TNFα and okadaic acid through inhibition of IκB-α degradation, thereby interfering with induction of iNOS in macrophages.
Biochem/physiol Actions
Cell permeable: yes
Primary Target
Chymotrypsin-like activity of the multicatalytic proteinase complex (MCP; 20S proteasome) in HT4 cells
Chymotrypsin-like activity of the multicatalytic proteinase complex (MCP; 20S proteasome) in HT4 cells
Product does not compete with ATP.
Reversible: yes
Preparation Note
Following reconstitution, aliquot and freeze (-20°C). DMSO stock solutions are stable for up to 3 months at -20°C.
Other Notes
Griscavage, J.M., et al. 1996. Proc. Natl. Acad. Sci. USA93, 3308.
Mori, S., et al. 1995. J. Biol. Chem.270, 29447.
Figueiredo-Pereira, M.E., et al. 1994. J. Neurochem. 63, 1578.
Traenckner, E.B., et al. 1994. EMBO J. 13, 5433.
Mori, S., et al. 1995. J. Biol. Chem.270, 29447.
Figueiredo-Pereira, M.E., et al. 1994. J. Neurochem. 63, 1578.
Traenckner, E.B., et al. 1994. EMBO J. 13, 5433.
Z-Ile-Glu(OtBu)-Ala-Leu-CHO
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Disclaimer
Toxicity: Standard Handling (A)
Storage Class
11 - Combustible Solids
wgk
WGK 3
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’.
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