Q: Are R&D Systems Caspase Inhibitors irreversible?

A: Yes, the majority of R&D Systems Caspase Inhibitors have a Fluoromethyl ketone (FMK) functional group on the C-terminus of the peptide, and act as effective irreversible inhibitors with no added cytotoxic effects. Inhibitors synthesized with a benzyloxycarbonyl group (also known as BOC or Z) at the N-terminus and O-methyl side chains exhibit enhanced cellular permeability. R&D Systems also offers a General Caspase Inhibitor, Q-VD-OPh, Catalog # OPH001, as well as a FITC-conjugated pan-caspase inhibitor (ApoStat), Catalog # FMK012, which are both cell-permeable, irreversible inhibitors of caspase activity.

Q: Does R&D Systems offer a negative control for Caspase Inihibitors with benzyloxycarbonyl group (Z-) at the N-terminus and the FMK functional group at the C-terminus?

A: Yes, R&D Systems offers Caspase Inhibitor Control Z-FA-FMK, Catalog # FMKC01, which is an inhibitor of cathepsins B and L but not caspases, and has been used in several systems as a negative control for peptide inhibitors of caspases.

Caspase-6 Inhibitor Z-VEID-FMK

R&D Systems | Catalog # FMK006

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Product Documents

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Preparation & Storage
Background
Product Documents
Specific Notices
Research Areas

Key Product Details

Cell permeable fluoromethyl ketone (FMK)-derivatized peptides act as effective irreversible Caspase inhibitors with no cytotoxic effects and, therefore, are useful tools for studying Caspase activity.

View all Caspase-6 Small Molecules and Peptides »

Formulation, Preparation, and Storage

FMK006

Shipping	The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage	Store the unopened product at -20 to -70 °C. Use a manual defrost freezer and avoid repeated freeze-thaw cycles. Do not use past expiration date.

Background: Caspase-6

Caspases are a family of cytosolic aspartate-specific cysteine proteases involved in the initiation and execution of apoptosis. They are expressed as latent zymogens and are activated by an autoproteolytic mechanism or by processing by other proteases (frequently other caspases). Human caspases can be subdivided into three functional groups: cytokine activation (caspase-1, -4, -5, and -13), apoptosis initiation (caspase-2, -8, -9, -and -10), and apoptosis execution (caspase-3, -6, and -7).

Caspases are regulated by a variety of stimili, including APAF1, CFLAR/FLIP, NOL3/ARC, and members of the inhibitor of apoptosis (IAP) family such as BIRC1/NAIP, BIRC2/cIAP-1, BIRC3/cIAP-2, BIRC4/XIAP, BIRC5/Survivin, and BIRC7/Livin. IAP activity is modulated by DIABLO/SMAC or PRSS25/HTRA2/Omi. Cell-permeable and irreversible peptide inhibitors are also available for different caspases.

Alternate Names

CASP6, Caspase6, Mch2

Entrez Gene IDs

839 (Human); 12368 (Mouse); 83584 (Rat)

Gene Symbol

CASP6

Additional Caspase-6 Products

Product Documents for Caspase-6 Inhibitor Z-VEID-FMK

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Certificate of Analysis

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Product Specific Notices for Caspase-6 Inhibitor Z-VEID-FMK

For research use only

Related Research Areas

Cysteine Proteases and Regulators

Citations for Caspase-6 Inhibitor Z-VEID-FMK

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