Caspase-8 Antibody (FLICE 4-1-20)


Western Blot: Caspase 8 Antibody (FLICE 4-1-20) [NB500-208] - Detection of Caspase 8 (59 kDa) from HEK293 cell extract using NB500-208 (1:500). Lanes 1 and 2 contain inactive and active Caspase 8, respectively.

Product Details

Reactivity HuSpecies Glossary
Applications WB
FLICE 4-1-20
This product is unpurified. The exact concentration of antibody is not quantifiable.

Order Details

Caspase-8 Antibody (FLICE 4-1-20) Summary

Full-length recombinant human Caspase 8 [UniProt# Q14790]
IgG1 Kappa
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Packaging, Storage & Formulations

Store at 4C. Do not freeze.
0.1% Sodium Azide
This product is unpurified. The exact concentration of antibody is not quantifiable.


Application Notes
This Caspase 8 (FLICE 4-1-20) antibody is useful for Western Blot where a band is seen at 55 kDa representing the inactive form of Caspase 8 (see protocol for additional information). We also have reports that the antibody detects the active (pro) form of Caspase 8.

Reactivity Notes


Alternate Names for Caspase-8 Antibody (FLICE 4-1-20)

  • AIS
  • androgen receptor
  • CASP8
  • Caspase8
  • Dihydrotestosterone receptorHYSP1
  • Mch5
  • NR3C4KD
  • Nuclear receptor subfamily 3 group C member 4
  • spinal and bulbar muscular atrophy


Caspases are evolutionary conserved family of aspartate-specific cystein proteases which are essential part of apoptotic machinery and typically signal in a two-step cascade: 'initiator caspases' with large prodomains (such as caspase-1, -8 and -9) are first recruited into large protein complexes in which they undergo proximity-induced autoactivation and "executioner caspases" such as caspase-3 and -6, caspase-7 which are activated by initiator caspases via freeing of executioner caspases of their short inhibitory prodomain, allowing them to cleave a large set of cellular substrates. Localized in cytoplasm, caspase 7 is a heterotetramer that is consists of two anti-parallel arranged heterodimers, each one formed by a 20 kD (p20) and a 11 kD (p11) subunit, and interacts with BIRC6/bruce. Caspase 7 cleaves/activates SREBPs and poly(ADP-ribose) polymerase (PARP). Its overexpression promotes apoptosis, and it also implicates in inflammation signaling. Therapeutic intervention with caspase-7 has been shown to prove beneficial in conditions where excessive cell death and/or inflammation contribute to diseases e.g. Alzheimer's disease, Huntington's disease, sepsis, rheumatoid arthritis, cancer and NIDDM.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Product General Protocols

View specific protocols for Caspase-8 Antibody (NB500-208): Find general support by application which include: protocols, troubleshooting, illustrated assays, videos and webinars.

Video Protocols

WB Video Protocol

FAQs for Caspase-8 Antibody (NB500-208). (Showing 1 - 3 of 3 FAQ).

  1. May we ask the MW difference between the active form and the proform of Caspase 8 while performing WB?
    • In treated cells induced to undergo apoptosis, caspase-8 migrates as a 55/53 kDa (pro-form), 41/42 kDa (a cleaved/active or intermediate form), and 18 kDa (active form). The proform (55/53 kDa) is still seen in treated cells because not all cells undergo apoptosis at once.
  2. May we ask if NB600-1343, NB100-56527 and NB500-208 can recognize both active form and profor
    • Product NB100-56527 recognises both pro and active forms of Caspase 8. NB500-208 recognises only the active form, and NB600-1343 has not been tested for specificity at this time.
  3. Does NB500-208 both recognize human and rat active form of caspase 8 (subunit p18 or subunit p10)? Besides that please let me know if NB500-208 also recognize pro-form caspase 8?
    • Caspase 8 Antibody (FLICE 4-1-20) # NB500-208 antibody does not recognize rat samples. It is human specific and in our QC data it was successfully tested to detect the pro or inactive form of caspase at molecular weight 59kd. However, depending upon the extent of extrinsic apoptotic pathway activation in your cells or tissues, you can expect to see bands of the active form also.

Positive Control Lysate(s)

Secondary Antibodies


Isotype Controls

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Blogs on Caspase-8.

Caspase 3, the executioner of apoptosis
Caspase-3 enzyme is a member of the family of endoproteases which regulate inflammation and apoptosis signaling networks. Caspase-3 is known as an executioner caspase in apoptosis because of its role in coordinating the destruction of cellular stru...  Read full blog post.

VPS41 - An important regulator of lysosomal trafficking
Membrane fusion is an essential step during the trafficking of endosomes and vesicles throughout the cell. Membrane fusion events are facilitated by multisubunit tethering complexes (MTC) including CORVET and HOPS. These complexes interact with Rab...  Read full blog post.

Caspase-8 - a pro-apoptotic protein with dynamic roles in normal physiology and pathology
Caspases are a family of cysteine-aspartic acid proteases that are responsible for the initiation and execution of apoptosis. Caspase-8 is a 55 kDa protein expressed as an inactive procaspase that resides in the cytosol. Activation of Caspase-8 req...  Read full blog post.

Caspase 8 - a key mediator of apoptosis
Programmed cell death via apoptosis is a key controlled physiological process instigated by the cell death receptor family, their ligands, and the caspase cysteine protease family. All caspases exist in a precursor form that contains a prodomain, a...  Read full blog post.

Contact Information

Product PDFs


Gene Symbol CASP8

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