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AB243900

Anti-CD8 alpha antibody [BLR044F]

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(1 Publication)

Rabbit Recombinant Monoclonal CD8 alpha antibody. Suitable for IHC-P, WB and reacts with Human samples. Cited in 1 publication. Immunogen corresponding to Synthetic Peptide within Human CD8A aa 150 to C-terminus.

View Alternative Names

CD8a, MAL, CD8A, T-cell surface glycoprotein CD8 alpha chain, T-lymphocyte differentiation antigen T8/Leu-2

4 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD8 alpha antibody [BLR044F] (AB243900)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD8 alpha antibody [BLR044F] (AB243900)

Formalin-fixed, paraffin-embedded human breast carcinoma tissue stained for CD8 alpha (red) using ab243900 at 1/250 dilution in immunohistochemical analysis. A conjugated goat anti-rabbit antibody was used as the secondary. Counterstain : DAPI (blue).

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD8 alpha antibody [BLR044F] (AB243900)
  • IHC-P

Unknown

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD8 alpha antibody [BLR044F] (AB243900)

Formalin-fixed, paraffin-embedded human tonsil tissue stained for CD8 alpha using ab243900 at 1/250 dilution in immunohistochemical analysis. A HRP-conjugated goat anti-rabbit antibody was used as the secondary. DAB staining.

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD8 alpha antibody [BLR044F] (AB243900)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD8 alpha antibody [BLR044F] (AB243900)

Formalin-fixed, paraffin-embedded human melanoma tissue stained for CD8 alpha (red) using ab243900 at 1/100 dilution in immunohistochemical analysis. A conjugated goat anti-rabbit antibody was used as the secondary. Counterstain : DAPI (blue).

Western blot - Anti-CD8 alpha antibody [BLR044F] (AB243900)
  • WB

Unknown

Western blot - Anti-CD8 alpha antibody [BLR044F] (AB243900)

Western blot analysis using ab243900 at 1/1000 dilution.

Lane 1 : CD4+ T cell whole cell lysate (50 µg).

Lane 2 : CD8+ T cell whole cell lysate (50 µg).

Lane 3 : Jurkat whole cell lysate (50 µg).

Lane 4 : MOLT-4 whole cell lysate (50 µg).

Lane 5 : RPMI 8226 whole cell lysate (50 µg).

Lane 6 : MJ whole cell lysate (50 µg).

Lane 7 : C5/MJ whole cell lysate (50 µg).

Lane 8 : KG-1 whole cell lysate (50 µg).

Lane 9 : SR whole cell lysate (50 µg).

Lane 10 : K562 whole cell lysate (50 µg).

A HRP-conjugated goat anti-rabbit IgG antibody was used as the secondary. Detection : chemiluminescence with an exposure time of 30 seconds.

All lanes:

Western blot - Anti-CD8 alpha antibody [BLR044F] (ab243900)

Predicted band size: 26 kDa

false

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

BLR044F

Isotype

IgG

Carrier free

No

Reacts with

Human

Applications

IHC-P, WB

applications

Immunogen

Synthetic Peptide within Human CD8A aa 150 to C-terminus. The exact immunogen used to generate this antibody is proprietary information.

P01732

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Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Human": { "IHCP-species-checked": "testedAndGuaranteed", "IHCP-species-dilution-info": "1/100 - 1/500", "IHCP-species-notes": "<p></p> Perform heat-mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "1/1000", "WB-species-notes": "<p></p>" } } }
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Product details

REACH authorisation
Abcam has not and does not intend to apply for the REACH Authorisation of customers' uses of products that contain European Authorisation list (Annex XIV) substances.
It is the responsibility of our customers to check the necessity of application of REACH Authorisation, and any other relevant authorisations, for their intended uses.

This product is sold under License from Bethyl Laboratories, Inc.

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Properties and storage information

Form
Liquid
Purification notes
Recombinant antibody was purified from cell culture supernatant.
Storage buffer
pH: 7.8 - 8.6 Preservative: 0.09% Sodium azide Constituents: 98% Borate buffered saline, 0.1% BSA
Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
+4°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

CD8 alpha also known as CD8A or CD8 protein is a glycoprotein subunit expressed on the surface of cytotoxic T lymphocytes. It has a mass of approximately 32 kDa. Found on the surface cell membrane CD8 alpha functions primarily in the immune response specifically in the recognition of antigens bound to major histocompatibility complex (MHC) class I molecules. Often scientists use CD8 antibodies for detection and CD8 IHC or immunohistochemistry for localization studies.
Biological function summary

The CD8 alpha protein plays a critical role in T-cell mediated immune responses. It forms a heterodimer with the CD8 beta chain creating the CD8 alpha-beta complex that strengthens T-cell interaction with antigen-presenting cells. CD8 alpha also helps in signaling processes that activate T cells equipping them to destroy infected or malignant cells. Researchers often study CD8 alpha peptides to understand its interactions better.

Pathways

CD8 alpha is integral to the T-cell receptor signaling pathway and the cytotoxic T lymphocyte (CTL) pathway. The T-cell receptor complex which includes the CD8 molecule transmits signals that are important for T-cell activation and function. CD8 interacts with key proteins such as the T-cell receptor (TCR) and MHC class I molecules facilitating targeted responses against pathogens. These pathways highlight CD8 alpha’s role in adaptive immunity.

CD8 alpha is most prominently associated with viral infections and cancer. Conditions like HIV and some forms of leukemia show altered CD8 function highlighting the protein's role in immune surveillance. In HIV infection for instance CD8 T cells reduce in number impairing the immune response. CD8 alpha’s connection to the immune system places it alongside other immune proteins such as CD4 and MHC molecules in the context of immune dysfunction.
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Product protocols

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

The protein expressed by the gene CD8A is an integral membrane glycoprotein crucial for immune responses, operating mainly in T-cells as a coreceptor for MHC class I molecule : peptide complexes. These peptides originate from cytosolic proteins, unlike class II peptides, which are from extracellular proteins. CD8A interacts with the T-cell receptor (TCR) and MHC class I proteins on antigen-presenting cells, recruiting the Src kinase LCK to the TCR-CD3 complex. LCK phosphorylates substrates, triggering signaling pathways that lead to the production of lymphokines, enhanced motility, adhesion, and activation of cytotoxic T-lymphocytes (CTLs), thereby aiding in the recognition and elimination of infected or tumor cells. Additionally, in natural killer (NK) cells, CD8A homodimers on the cell surface provide a survival mechanism for conjugating with and lysing multiple target cells. CD8A homodimers also facilitate the survival and differentiation of activated lymphocytes into memory CD8 T-cells. This supplementary information is collated from multiple sources and compiled automatically.
See full target information CD8A
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Publications (1)

Recent publications for all applications. Explore the full list and refine your search

Oncology research 33:1679-1693 PubMed40612868

2025

N6-Methyladenosine Promotes the Transcription of c-Src Kinase via IRF1 to Facilitate the Proliferation of Liver Cancer.

Applications

Unspecified application

Species

Unspecified reactive species

Yanxi Peng,Honggen Yuan,Zhanjie Jiang,Xiaoqing Ou,Qian Zhang,Kexin Yi,Yanbin Meng,Qun Xie
View all publications
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