539162

Proteasome Inhibitor II

The Proteasome Inhibitor II controls the biological activity of Proteasome. This small molecule/inhibitor is primarily used for Protease Inhibitors applications.

• Synonym(s): Proteasome Inhibitor II, (Benzyloxycarbonyl)-Leu-Leu-phenylalaninal, Z-LLF-CHO
• Empirical Formula (Hill Notation): C₂₉H₃₉N₃O₅
• Molecular Weight: 509.64
• UNSPSC Code: 12352200
• NACRES: NA.77

Properties

• Quality Level: 100
• Assay: ≥95% (HPLC)
• form: lyophilized solid
• manufacturer/tradename: Calbiochem^®
• storage condition: OK to freeze; desiccated
• color: white
• solubility: DMSO: 5 mg/mL
• shipped in: ambient
• storage temp.: −20°C

Description

General description

A potent, cell-permeable, and reversible proteasome inhibitor. Inhibits the chymotrypsin-like activity of the pituitary multicatalytic proteinase complex (MPC; K_i = 460 nM). Does not inhibit the peptidyl-glutamyl peptide hydrolyzing activity of MPC even at concentrations of 200 µM. Also blocks the decay of IκB-α and IκB-β proteins in exponentially growing WEHI 231 cells.

Biochem/physiol Actions

Cell permeable: yes

Primary Target
MPC

Product does not compete with ATP.

Reversible: yes

Target K_i: 460 nM against the pituitary multicatalytic proteinase complex (MPC)

Warning

Toxicity: Standard Handling (A)

Sequence

Z-Leu-Leu-Phe-CHO

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months.

Other Notes

Schauer, S.L., et al. 1998. J. Immunol. 160, 4398.
Orlowski, M., et al. 1997. Biochemistry 36, 13946.
Orlowski, M., et al. 1993. Biochemistry 32, 1563.

Legal Information

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

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable