Z-FA-FMK; Z-Phe-Ala fluoromethyl ketone; Cathepsin B Inhibitor

≥95% by HPLC

We recommend using 2-10 µM for inhibiting non-caspase cysteine protease activity in cell culture, or as a control for other FMK caspase inhibitors. The optimal dose may vary for different cells and culture conditions.

Soluble in DMSO

Store at or below –20°C. Solid form is stable at least 12 months from date of receipt, when stored as directed. Do not store aqueous solutions for more than one day.

1. Lopez-Hernandez, F.J., et al. 2003. Mol. Cancer Ther. 2: 255-263.
2. Ahmed, N.K., et al. 1992. Biochem. Pharmacol: 44: 1201-1207.
3. Lawrence, C.P., et al. 2006. J. Immunol. 177: 3827-3826.

The inhibitor is designed as a methyl ester to facilitate cell permeability. If the intended use is on purified or recombinant enzymes, esterase should be added to generate free carboxyl groups.

Z-Phe-Ala-CH2F

Apoptosis Inhibitor

Inhibitor