Are R&D Systems Caspase Inhibitors irreversible?

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.

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?

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-1/ICE Inhibitor Z-WEHD-FMK

Name: Caspase-1/ICE Inhibitor Z-WEHD-FMK
Brand: R&D Systems
SKU: FMK002

R&D Systems, part of Bio-Techne | Catalog # FMK002

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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.

Conjugate

Unconjugated

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Formulation, Preparation and Storage

FMK002

Background: Caspase-1

Caspase-1, also known as IL-1 beta-converting enzyme (ICE), is an aspartic protease that plays a key role in the inflammatory response and apoptosis. Caspase-1 precursor (about 50kDa) can be cleaved and the active enzyme consists of a complex of two 20 kDa and two 10 kDa subunits which associate following cleavage of inactive precursors. Caspase-1 is required for proteolytic cleavage of the IL-1 beta precursor to form the active proinflammatory cytokine.

Alternate Names

CASP1, Caspase1, ICE

Entrez Gene IDs

834 (Human)

Gene Symbol

CASP1

Additional Caspase-1 Products

Product Documents for Caspase-1/ICE Inhibitor Z-WEHD-FMK

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COA

SDS

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Product Specific Notices for Caspase-1/ICE Inhibitor Z-WEHD-FMK

For research use only

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