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AB263956

Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free

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(1 Publication)

Rabbit Recombinant Monoclonal CD8 beta antibody. Carrier free. Suitable for IP, Flow Cyt, WB, IHC-Fr and reacts with Mouse samples. Cited in 1 publication.

View Alternative Names

CD8b, Cd8b1, Ly-3, Lyt-3, Lyt3, Cd8b, T-cell surface glycoprotein CD8 beta chain, Lymphocyte antigen 3, T-cell membrane glycoprotein Ly-3, T-cell surface glycoprotein Lyt-3

5 Images
Flow Cytometry - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)
  • Flow Cyt

Unknown

Flow Cytometry - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)

Flow Cytometric analysis of mouse thymocytes using ab263946 at a 1/500 dilution. Cells were stained with Rabbit monoclonal IgG (ab172730) (Left) or ab263946 (Right). Then stained with anti-CD4 conjugated to Alexa Fluor® 647. Secondary used is Goat anti rabbit IgG (Alexa Fluor® 488, ab150077) at a 1/2000 dilution.

Gated on viable cells.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab263946).

Immunohistochemistry (Frozen sections) - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)
  • IHC-Fr

Supplier Data

Immunohistochemistry (Frozen sections) - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)

Immunohistochemical analysis of 4% PFA fixed 0.2% Triton X-100 permeabilized frozen mouse thymus tissue labeling CD8 beta with ab263946 at 1/100 (5.13 µg/ml) dilution followed by ab150077 Alexa Fluor® 488 Goat anti-Rabbit secondary at 1/1000 (2 µg/ml) dilution. The nuclear counterstain was DAPI (Blue). Positive staining on T cells of mouse thymus (PMID : 12702501) is observed.

Heat mediated antigen retrieval using sodium citrate buffer (10mM citrate pH 6.0 + 0.05% Tween-20).

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody was ab150077 Alexa Fluor® 488 Goat anti-Rabbit secondary at 1/1000 (2 µg/ml) dilution.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab263946).

Immunohistochemistry (Frozen sections) - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)
  • IHC-Fr

Supplier Data

Immunohistochemistry (Frozen sections) - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)

Immunohistochemical analysis of 4% PFA fixed 0.2% Triton X-100 permeabilized frozen mouse liver tissue labeling CD8 beta with ab263946 at 1/100 (5.13 µg/ml) dilution followed by ab150077 Alexa Fluor® 488 Goat anti-Rabbit secondary at 1/1000 (2 µg/ml) dilution. The nuclear counterstain was DAPI (Blue). Negative staining on mouse liver.

Negative control : liver (PMID : 3145195).

Heat mediated antigen retrieval using sodium citrate buffer (10mM citrate pH 6.0 + 0.05% Tween-20).

Secondary antibody only control : Used PBS instead of primary antibody, secondary antibody was ab150077 Alexa Fluor® 488 Goat anti-Rabbit secondary at 1/1000 (2 µg/ml) dilution.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab263946).

Western blot - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)
  • WB

Lab

Western blot - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab263946).Blocking and diluting buffer and concentration : 5% NFDM/TBST.

CD8 beta is a glycoprotein. The molecular weight observed is consistent with what has been described in the literature (PMID : 11719190).

Exposure time :
Lane 1 : 3 secs.
Lane 2 : 3 mins.

All lanes:

Western blot - Anti-CD8 beta antibody [EPR22331-81] (<a href='/en-us/products/primary-antibodies/cd8-beta-antibody-epr22331-81-ab263946'>ab263946</a>) at 1/1000 dilution

Lane 1:

Mouse thymus lysate at 20 µg

Lane 2:

Mouse lymph node lysate at 20 µg

Secondary

All lanes:

Western blot - Goat Anti-Rabbit IgG H&L (HRP) (<a href='/en-us/products/secondary-antibodies/goat-rabbit-igg-h-l-hrp-ab97051'>ab97051</a>) at 1/100000 dilution

Predicted band size: 24 kDa

Observed band size: 28-32 kDa

false

Immunoprecipitation - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)
  • IP

Supplier Data

Immunoprecipitation - Anti-CD8 beta antibody [EPR22331-81] - BSA and Azide free (AB263956)

CD8 beta was immunoprecipitated from 0.35 mg mouse thymus lysate 10μg with ab263946 at 1/30 dilution (2μg in 0.35mg lysates). Western blot was performed on the immunoprecipitate using ab263946 at 1/1000 dilution. VeriBlot for IP Detection Reagent (HRP) (ab131366) was used at 1/5000 dilution.

Lane 1 : Mouse thymus lysate 10μg
Lane 2 : ab263946 IP in mouse thymus lysate
Lane 3 : Rabbit monoclonal IgG (ab172730) instead of ab263946 in mouse thymus lysate

Blocking and dilution buffer and concentration : 5% NFDM/TBST.

Exposure time : 10 seconds.

This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab263946).

All lanes:

Immunoprecipitation - Anti-CD8 beta antibody [EPR22331-81] (<a href='/en-us/products/primary-antibodies/cd8-beta-antibody-epr22331-81-ab263946'>ab263946</a>)

Predicted band size: 24 kDa

false

  • Unconjugated

    Anti-CD8 beta antibody [EPR22331-81]

  • 660 APC

    APC Anti-CD8 antibody [EPR22331-81]

  • 578 PE

    PE Anti-CD8 antibody [EPR22331-81]

Key facts

Host species

Rabbit

Clonality

Monoclonal

Clone number

EPR22331-81

Isotype

IgG

Carrier free

Yes

Reacts with

Mouse

Applications

IHC-Fr, WB, IP, Flow Cyt

applications

Immunogen

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

Reactivity data

{ "title": "Reactivity Data", "filters": { "stats": ["", "Species", "Dilution Info", "Notes"], "tabs": { "all-applications": {"fullname" : "All Applications", "shortname": "All Applications"}, "IP" : {"fullname" : "Immunoprecipitation", "shortname":"IP"}, "FlowCyt" : {"fullname" : "Flow Cytometry", "shortname":"Flow Cyt"}, "WB" : {"fullname" : "Western blot", "shortname":"WB"}, "IHCP" : {"fullname" : "Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)", "shortname":"IHC-P"}, "IHCFr" : {"fullname" : "Immunohistochemistry (Frozen sections)", "shortname":"IHC-Fr"} }, "product-promise": { "all": "all", "testedAndGuaranteed": "tested", "guaranteed": "expected", "predicted": "predicted", "notRecommended": "not-recommended" } }, "values": { "Mouse": { "IP-species-checked": "testedAndGuaranteed", "IP-species-dilution-info": "", "IP-species-notes": "<p></p>", "FlowCyt-species-checked": "testedAndGuaranteed", "FlowCyt-species-dilution-info": "", "FlowCyt-species-notes": "<p></p>", "WB-species-checked": "testedAndGuaranteed", "WB-species-dilution-info": "", "WB-species-notes": "<p></p>", "IHCP-species-checked": "notRecommended", "IHCP-species-dilution-info": "", "IHCP-species-notes": "<p></p>", "IHCFr-species-checked": "testedAndGuaranteed", "IHCFr-species-dilution-info": "", "IHCFr-species-notes": "<p>Heat mediated antigen retrieval using sodium citrate buffer (10mM citrate pH 6.0 + 0.05% Tween-20).</p>" } } }

Product details

ab263956 is the carrier-free version of ab263946.

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

Supplementary information

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

The target CD8 beta also known as CD8b or CD8B is a protein component of the CD8 coreceptor that is primarily expressed on the surface of cytotoxic T lymphocytes and a subset of natural killer cells. The CD8 beta molecule pairs with CD8 alpha to form a heterodimer that plays an essential role in the immune response. The molecular weight of CD8 beta is approximately 34 kDa. It is located primarily in the plasma membrane where it interacts with major histocompatibility complex (MHC) class I molecules.
Biological function summary

The CD8 beta protein works as part of the CD8 coreceptor complex which enhances the interaction between T cell receptors (TCRs) and antigens presented by MHC class I on infected or malignant cells. This interaction strengthens the activation signal received by T cells. The CD8 complex including CD8 beta contributes to the recognition and elimination of cells presenting foreign antigens which is essential for the adaptive immune response.

Pathways

The CD8 beta protein participates in pathways related to antigen recognition and T cell receptor signaling. The protein together with CD8 alpha facilitates signal transduction following TCR engagement. This action is vital for the activation of cytotoxic T cells enabling immune responses. CD8 beta associates with the Lck kinase another vital player in the TCR signaling pathway through its cytoplasmic tail. In this pathway the presence of CD8 beta helps maintain and modulate effective immune responses.

CD8 beta plays a significant role in conditions like viral infections and autoimmune diseases. In viral infections the presence of the CD8 complex containing CD8 beta aids in the destruction of virus-infected cells. In autoimmune diseases abnormal CD8 T cell responses can result in self-tissue damage reflecting dysregulation in its normal function. CD8 beta therefore proves critical in these contexts contributing to disease dynamics by interacting with proteins like MHC class I and Lck kinase during improper immune responses.

Product protocols

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

Target data

Integral membrane glycoprotein that plays an essential role in the immune response and serves multiple functions in responses against both external and internal offenses. In T-cells, functions primarily as a coreceptor for MHC class I molecule : peptide complex. The antigens presented by class I peptides are derived from cytosolic proteins while class II derived from extracellular proteins. Interacts simultaneously with the T-cell receptor (TCR) and the MHC class I proteins presented by antigen presenting cells (APCs). In turn, recruits the Src kinase LCK to the vicinity of the TCR-CD3 complex. A palmitoylation site in the cytoplasmic tail of CD8B chain contributes to partitioning of CD8 into the plasma membrane lipid rafts where signaling proteins are enriched. Once LCK recruited, it initiates different intracellular signaling pathways by phosphorylating various substrates ultimately leading to lymphokine production, motility, adhesion and activation of cytotoxic T-lymphocytes (CTLs). Additionally, plays a critical role in thymic selection of CD8+ T-cells.
See full target information Cd8b

Publications (1)

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

Scientific reports 13:5374 PubMed37005468

2023

Spatial subcellular organelle networks in single cells.

Applications

Unspecified application

Species

Unspecified reactive species

Mythreye Venkatesan,Nicholas Zhang,Benoit Marteau,Yukina Yajima,Nerea Ortiz De Zarate Garcia,Zhou Fang,Thomas Hu,Shuangyi Cai,Adam Ford,Harrison Olszewski,Andrew Borst,Ahmet F Coskun
View all publications

Product promise

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