Caspase Antibodies & Kits: Mediators of Apoptosis

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Apoptosis Webinar

"A question of Life or Death" - differentiating between healthy and apoptotic cells

Detecting caspase activation with kits and antibodies

Cysteine aspartic proteases (caspases) play critical roles in regulating apoptosis and inflammation. Caspases involved in apoptosis are classified into distinct subsets based on function, effector caspases (caspases-3, -6 and -7) and initiator caspases (caspases-2, -8, -9 and -10). Caspases-1, -4, -5, -11 and -12 are involved in inflammation.

All caspases are synthesized in inactive forms, referred to as pro-caspases, that require dimerization/oligomerization and subsequent cleavage for activation. Extrinsic or intrinsic death signals mediate caspase activation and apoptosis via two distinct pathways. The extrinsic pathway is triggered by ligand binding to cell surface death receptors, and the intrinsic pathway is activated by factors such as DNA damage, growth factor withdrawal or loss of extracellular matrix contact and is mediated through the mitochondria.

Bio-Rad offers a range of antibodies and FLICA Caspase Kits for measuring caspase activity.

Table 1. Molecular weight of apoptotic caspases and examples of their inhibitors.

Caspase Name (In order of activation in the instrinsic apoptosis pathway) Activated By MW of Human Pro-caspase (kD)*1 MW of Human Activated Caspase (kD)*2 Examples of Caspase Inhibitors
Caspase-9 Apoptosome formation/APAF-1 46 37 LEHD-FMK
Caspase-3 Caspase-9 32 17 and 11 DEVD-FMK
Caspase-7 Caspase-9 35 20 DEVD-FMK
Caspase-2 Caspase-3 51 12 and 14 VDVAD-FMK
Caspase-6 Caspase-3 34 15 and 18 VEID-FMK
Caspase-8 Caspase-6/death receptor domain 56 43 and 14 LETD-FMK
Caspase-10 Caspase-6 59 12 and 43 AEVD-FMK*3

*1 Molecular weight data are based on western blot analysis and information from the universal protein resource database (UniProt)
*2 The procaspase form is a monomer
*3 FMK is the abbreviation for fluoromethylketone. The addition of FMK to the peptide sequence results in irreversible linkage and permanent inactivation of caspases


Caspase Antibodies & Kits

We offer a wide range of antibodies to all caspases, in a number of formats. These antibodies can be used for applications including flow cytometry, western blotting, immunofluorescence, immunohistochemistry, immunoprecipitation and ELISA.

Please use the buttons/filters to sort the attributes in the table below in order to find the antibody that fits your exact requirements. If you need any further assistance please do not hesitate to contact us.


Our Caspase Range

    DescriptionSpecificityTargetFormatHostIsotypeClone Applications Citations Product Type Code


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