ASC/TMS1 [p Tyr144] Antibody

Novus Biologicals, part of Bio-Techne | Catalog # NBP3-23383

Novus Biologicals, part of Bio-Techne
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NBP3-23383
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Key Product Details

Validated by

Biological Validation

Species Reactivity

Validated:

Human, Mouse, Rat

Applications

Immunocytochemistry/ Immunofluorescence, Western Blot

Label

Unconjugated

Antibody Source

Polyclonal Rabbit IgG

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

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Product Summary for ASC/TMS1 [p Tyr144] Antibody

Immunogen

ASC/TMS1 (Tyr-144) phospho-peptide (coupled to KLH) corresponding to amino acid residues surrounding Tyr-144 in mouse Asc. This peptide sequence is highly conserved in human and rat ASC/TMS1. [UniProt# Q9EPB4]

Modification

p Tyr144

Specificity

This antibody was cross-adsorbed to unphosphorylated ASC/TMS1 (Tyr-144) peptide before affinity purification using phospho-ASC/TMS1 (Tyr-144) peptide. The antibody detects phosphorylated ASC/TMS1 (Tyr-144) in the inflammasome. In J774 macrophage cells primed with LPS and treated with nigericin, the antibody colocalized with an inflammasome marker, caspase-1 inhibitor (FAM-YVAD-FMK). In addition, the antibody detects a 20 kDa Asc protein in western blots of J774A.1 mouse macrophages treated with pervanadate.

Clonality

Polyclonal

Host

Rabbit

Isotype

IgG

Theoretical MW

22 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Description

Stable for at least 1 year at -20°C.

Scientific Data Images for ASC/TMS1 [p Tyr144] Antibody

ASC/TMS1 [p Tyr144] Antibody

Western Blot: ASC/TMS1 [p Tyr144] Antibody [NBP3-23383] -

Western Blot: ASC/TMS1 [p Tyr144] Antibody [NBP3-23383] - Western blot analysis of mouse macrophage J774A.1 cells stimulated with pervanadate (1 mM for 30 min.), then untreated (-) or treated (+) with alkaline phosphatase. The blot was probed with rabbit polyclonal anti-ASC/TMS1 (Tyr-144) phospho-specific antibody (NBP3-23383) at 1:500.

Applications for ASC/TMS1 [p Tyr144] Antibody

Application
Recommended Usage

Immunocytochemistry/ Immunofluorescence

1:100

Western Blot

1:1000
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Formulation, Preparation, and Storage

Purification

Antigen Affinity-purified

Formulation

PBS, 1 mg/ml BSA and 50% glycerol

Preservative

0.05% Sodium Azide

Concentration

Please see the vial label for concentration. If unlisted please contact technical services.

Shipping

The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store at -20C.

Background: ASC

ASC (apoptosis-associated speck-like protein containing a CARD), also known as TMS1 (target of methylation-induced silencing), was first identified in 1999 as a protein that forms aggregates, or specks, during retinoic acid-induced apoptosis in a human leukemia cell line (1). Furthermore, it was discovered to have a role as a tumor suppressor as methylation silences ASC/TMS1 expression in many tumors (2-5). ASC/TMS1 is synthesized as a 195-amino acid (aa) protein with a theoretical weight of 22 kDa. Structurally the protein contains a N-terminal PYD (pyrin domain) and C-terminal CARD (caspase-recruitment domain) (1-4). Historically, CARD and PYD-containing proteins are known to have crucial functions in regulating apoptosis and immune response pathways (2-5). Furthermore, mutations in many CARD and PYD-containing proteins have been linked to various cancers and inflammatory diseases (2-5). Given its immune response role, it is not surprising that ASC/TMS1 is typically highly expressed in immune cells, specifically in neutrophils and cells of the macrophage/monocyte lineage (5). Additionally, it is expressed in many normal epithelial cell types (4,5).

In regard to immune and inflammatory response, ASC/TMS1 is involved in inflammasome function (3-4). The inflammasome is a multiprotein complex that responds to cellular stress or pathogens and activates inflammatory responses. Specifically, ASC/TMS1 helps assemble the NLRP3 inflammasome complex which then activates caspase-1, followed by stimulation of proinflammatory cytokines including IL-1b and IL-18 (3-4). In terms of the role in regulating apoptosis, multiple studies have revealed that the ASC/TMS1 gene is hypermethylated in many cancers including breast, lung, glioblastomas, and melanomas (2-5). The increased methylation results in decreased gene expression, or silencing, allowing those cancer cells to escape apoptosis (2-5).

References

1. Masumoto, J., Taniguchi, S., Ayukawa, K., Sarvotham, H., Kishino, T., Niikawa, N., Hidaka, E., Katsuyama, T., Higuchi, T., & Sagara, J. (1999). ASC, a novel 22-kDa protein, aggregates during apoptosis of human promyelocytic leukemia HL-60 cells. The Journal of biological chemistry, 274(48), 33835-33838. https://doi.org/10.1074/jbc.274.48.33835

2. McConnell, B. B., & Vertino, P. M. (2004). TMS1/ASC: the cancer connection. Apoptosis: an international journal on programmed cell death. https://doi.org/10.1023/B:APPT.0000012117.32430.0c

3. Salminen, A., Kauppinen, A., Hiltunen, M., & Kaarniranta, K. (2014). Epigenetic regulation of ASC/TMS1 expression: potential role in apoptosis and inflammasome function. Cellular and molecular life sciences : CMLS. https://doi.org/10.1007/s00018-013-1524-9

4. Protti, M. P., & De Monte, L. (2020). Dual Role of Inflammasome Adaptor ASC in Cancer. Frontiers in cell and developmental biology. https://doi.org/10.3389/fcell.2020.00040

5. Parsons, M. J., & Vertino, P. M. (2006). Dual role of TMS1/ASC in death receptor signaling. Oncogene. https://doi.org/10.1038/sj.onc.1209684

Long Name

Apoptosis-Associated Speck-Like Protein Containing A CARD

Alternate Names

CARD5, PYCARD, TMS1

Gene Symbol

PYCARD

Additional ASC Products

Product Documents for ASC/TMS1 [p Tyr144] Antibody

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Product Specific Notices for ASC/TMS1 [p Tyr144] Antibody

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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