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AB247233

Anti-Caspase-8 antibody [E6] - BSA and Azide free

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Rabbit Recombinant Monoclonal Caspase-8 antibody. Carrier free. Suitable for WB and reacts with Human samples.

View Alternative Names

MCH5, CASP8, Caspase-8, CASP-8, Apoptotic cysteine protease, Apoptotic protease Mch-5, CAP4, FADD-homologous ICE/ced-3-like protease, FADD-like ICE, ICE-like apoptotic protease 5, MORT1-associated ced-3 homolog, FLICE, MACH

3 Images
Western blot - Anti-Caspase-8 antibody [E6] - BSA and Azide free (AB247233)
  • WB

Lab

Western blot - Anti-Caspase-8 antibody [E6] - BSA and Azide free (AB247233)

Lanes 1 and 2 : Merged signal (red and green). Green - ab32125 observed at 55 kDa. Red - loading control, ab8226, observed at 42 kDa.

ab32125 was shown to recognize Caspase-8 when Caspase-8 knockout samples were used, along with additional cross-reactive bands. Wild-type and Caspase-8 knockout samples were subjected to SDS-PAGE. ab32125 and ab8226 (loading control to beta actin) were diluted 1/3000 and 1/1000 and incubated overnight at 4°C. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1/10 000 dilution for 1 h at room temperature before imaging.

All lanes:

Western blot - Anti-Caspase-8 antibody [E6] (<a href='/en-us/products/primary-antibodies/caspase-8-antibody-e6-ab32125'>ab32125</a>)

Lane 1:

Wild-type HAP1 cell lysate at 20 µg

Lane 2:

Caspase-8 knockout HAP1 cell lysate at 20 µg

Predicted band size: 55 kDa

false

Western blot - Anti-Caspase-8 antibody [E6] - BSA and Azide free (AB247233)
  • WB

Lab

Western blot - Anti-Caspase-8 antibody [E6] - BSA and Azide free (AB247233)

This data was developed using the same antibody clone in a different buffer formulation (ab32125).

Lanes 1- 4 : Merged signal (red and green). Green - ab32125 observed at 55 kDa. Red - Anti-GAPDH antibody [6C5] - Loading Control (ab8245) observed at 37 kDa.

ab32125 was shown to react with Caspase-8 in wild-type HeLa cells in western blot. Loss of signal was observed when knockout cell line ab264958 (knockout cell lysate ab256857) was used. Wild-type HeLa and CASP8 knockout HeLa cell lysates were subjected to SDS-PAGE. Membrane was blocked for 1 hour at room temperature in 0.1% TBST with 3% non-fat dried milk. ab32125 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) overnight at 4°C at a 1 in 3000 dilution and a 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye®800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye®680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.

All lanes:

Western blot - Anti-Caspase-8 antibody [E6] (<a href='/en-us/products/primary-antibodies/caspase-8-antibody-e6-ab32125'>ab32125</a>) at 1/3000 dilution

Lane 1:

Wild-type HeLa cell lysate at 20 µg

Lane 2:

CASP8 knockout HeLa cell lysate at 20 µg

Lane 2:

Western blot - Human CASP8 (Caspase-8) knockout HeLa cell line (<a href='/en-us/products/cell-lines/human-casp8-caspase-8-knockout-hela-cell-line-ab264958'>ab264958</a>)

Lane 3:

Jurkat cell lysate at 20 µg

Lane 4:

SH-SY5Y cell lysate at 20 µg

Predicted band size: 55 kDa

Observed band size: 55 kDa

false

Western blot - Anti-Caspase-8 antibody [E6] - BSA and Azide free (AB247233)
  • WB

Lab

Western blot - Anti-Caspase-8 antibody [E6] - BSA and Azide free (AB247233)

This data was developed using ab32125, the same antibody clone in a different buffer formulation.

Western blot : Anti-Caspase-8 antibody [E6] ab32125 staining at 1/3000 dilution, shown in green; Mouse anti GAPDH (ab8245) loading control staining at 1/20,000 dilution, shown in magenta. A band was observed at 60 kDa in Wild-type A549 cell lysates with no signal observed at this size in CASP8 knockout A549 cell line. To generate this image, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 5pc Milk in TBS-0.1 % Tween® 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Goat anti-Rabbit 800CW & Goat anti-Mouse 680RD at 1/20,000 dilution.

All lanes:

Western blot - Anti-Caspase-8 antibody [E6] (<a href='/en-us/products/primary-antibodies/caspase-8-antibody-e6-ab32125'>ab32125</a>) at 1/3000 dilution

Lane 1:

Wild-type A549 at 20 µg

Lane 2:

Western blot - Human CASP8 knockout A549 cell line (<a href='/en-us/products/cell-lines/human-casp8-knockout-a549-cell-line-ab286757'>ab286757</a>) at 20 µg

Lane 3:

Western blot - Human wild-type HCT116 cell line (ab288559) at 20 µg

Lane 4:

Western blot - Human CASP8 knockout HCT116 cell line (<a href='/en-us/products/cell-lines/human-casp8-knockout-hct116-cell-line-ab286576'>ab286576</a>) at 20 µg

Secondary

Lanes 1 - 4:

Goat anti-Rabbit 800CW at 1/20000 dilution

Lanes 1 - 4:

Goat anti-Mouse 680RD at 1/20000 dilution

Predicted band size: 60 kDa,37 kDa

Observed band size: 60 kDa

false

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

E6

Isotype

IgG

Carrier free

Yes

Reacts with

Human

Applications

WB

applications

Immunogen

The exact immunogen used to generate this antibody is proprietary information.

Epitope

ab247233 reacts with an epitope located in the N terminal region of caspase-8.

Specificity

This antibody should recognize all splice isoforms of Caspase-8.

Reactivity data

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Product details

ab247233 is the carrier-free version of ab32125.

Species reactivity
Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species.
Please contact us for more information.

Patented technology
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.

What are the advantages of a recombinant monoclonal antibody?
This product is a recombinant monoclonal antibody, which offers several advantages including:

  • - High batch-to-batch consistency and reproducibility
  • - Improved sensitivity and specificity
  • - Long-term security of supply
  • - Animal-free batch production

For more information, read more on recombinant antibodies.

Conjugation ready
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.

Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with 1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.

Compatibility
This product is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm, without the need for antibody preparation. Maxpar® is a trademark of Fluidigm Canada Inc.

Properties and storage information

Form
Liquid
Purification technique
Affinity purification Protein A
Storage buffer
pH: 7.2 - 7.4 Constituents: PBS
Shipped at conditions
Blue Ice
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Storage information
Do Not Freeze

Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:

Target data

Thiol protease that plays a key role in programmed cell death by acting as a molecular switch for apoptosis, necroptosis and pyroptosis, and is required to prevent tissue damage during embryonic development and adulthood (PubMed : 23516580, PubMed : 35338844, PubMed : 35446120, PubMed : 8681376, PubMed : 8681377, PubMed : 8962078, PubMed : 9006941, PubMed : 9184224). Initiator protease that induces extrinsic apoptosis by mediating cleavage and activation of effector caspases responsible for FAS/CD95-mediated and TNFRSF1A-induced cell death (PubMed : 23516580, PubMed : 35338844, PubMed : 35446120, PubMed : 8681376, PubMed : 8681377, PubMed : 8962078, PubMed : 9006941, PubMed : 9184224). Cleaves and activates effector caspases CASP3, CASP4, CASP6, CASP7, CASP9 and CASP10 (PubMed : 16916640, PubMed : 8962078, PubMed : 9006941). Binding to the adapter molecule FADD recruits it to either receptor FAS/TNFRSF6 or TNFRSF1A (PubMed : 8681376, PubMed : 8681377). The resulting aggregate called the death-inducing signaling complex (DISC) performs CASP8 proteolytic activation (PubMed : 9184224). The active dimeric enzyme is then liberated from the DISC and free to activate downstream apoptotic proteases (PubMed : 9184224). Proteolytic fragments of the N-terminal propeptide (termed CAP3, CAP5 and CAP6) are likely retained in the DISC (PubMed : 9184224). Also cleaves and activates BID, thereby promoting cytochrome C release from mitochrondria (By similarity). In addition to extrinsic apoptosis, also acts as a negative regulator of necroptosis : acts by cleaving RIPK1 at 'Asp-324', which is crucial to inhibit RIPK1 kinase activity, limiting TNF-induced apoptosis, necroptosis and inflammatory response (PubMed : 31827280, PubMed : 31827281). Also able to initiate pyroptosis by mediating cleavage and activation of gasdermin-C and -D (GSDMC and GSDMD, respectively) : gasdermin cleavage promotes release of the N-terminal moiety that binds to membranes and forms pores, triggering pyroptosis (PubMed : 32929201, PubMed : 34012073). Initiates pyroptosis following inactivation of MAP3K7/TAK1 (By similarity). Also acts as a regulator of innate immunity by mediating cleavage and inactivation of N4BP1 downstream of TLR3 or TLR4, thereby promoting cytokine production (By similarity). May participate in the Granzyme B (GZMB) cell death pathways (PubMed : 8755496). Cleaves PARP1 and PARP2 (PubMed : 8681376). Independent of its protease activity, promotes cell migration following phosphorylation at Tyr-380 (PubMed : 18216014, PubMed : 27109099).. Isoform 5. Lacks the catalytic site and may interfere with the pro-apoptotic activity of the complex.. Isoform 6. Lacks the catalytic site and may interfere with the pro-apoptotic activity of the complex.. Isoform 7. Lacks the catalytic site and may interfere with the pro-apoptotic activity of the complex (Probable). Acts as an inhibitor of the caspase cascade (PubMed : 12010809).. Isoform 8. Lacks the catalytic site and may interfere with the pro-apoptotic activity of the complex.
See full target information CASP8

Product promise

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