Calpain Inhibitor VI

A cell-permeable peptide aldehyde that acts as a potent and reversible inhibitor of calpain (IC₅₀ = 7.5 nM for µ-calpain and 78 nM for m-calpain). Also potently inhibits cathepsin B (IC₅₀ = 15 nM) and cathepsin L (IC₅₀ = 1.6 nM). Reduces βFGF-induced angiogenesis in rat cornea and prevents selenite cataract formation in rats. Reduces A23187-induced nuclear opacity and proteolysis of crystallins and α-spectrin in cultured rat lenses.

A potent, cell-permeable, reversible inhibitor of calpain (IC₅₀ = 7.5 nM for µ-calpain and 78 nM for m-calpain). Also potently inhibits cathepsin B (IC₅₀ = 15 nM) and L (IC₅₀ = 1.6 nM). Reduces bFGF-induced angiogenesis in rat cornea and prevents selenite cataract formation. Reduces A23187-induced nuclear opacity and proteolysis of crystallins and α-spectrin in cultured lenses.

Cell permeable: yes

Primary Target
µ-calpain

Product does not compete with ATP.

Reversible: yes

Target IC₅₀: 7.5 nM for µ-calpain and 78 nM for m-calpain; 15 nM and 1.6 nM against cathepsin B and L, respectively

Packaged under inert gas

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

4-Fluorophenylsulfonyl-Val-Leu-CHO

Inoue, J., et al. 2003. J. Med. Chem.46, 868.
Tamada, Y., et al. 2001. Curr. Eye Res.22, 280.
Mathur, P., et al. 2000. Curr. Eye Res.21, 926.
Nath, R., et al. 2000. Biochem. Biophys. Res. Commun.274, 16.
Tamada, Y., et al. 2000. J. Ocul. Pharmacol. Ther.16, 271.
Fukiage, C., et al. 1998. Curr. Eye Res.17, 623.
Fukiage, C., et al. 1997. Biochim. Biophys. Acta 1361, 304.

Sold under license of U.S. Patent 6,551,999

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

Toxicity: Standard Handling (A)