CD8a Monoclonal Antibody (53-6.7), PerCP-eFluor™ 710, eBioscience™, Invitrogen™

Rat Monoclonal Antibody

Supplier:  Invitrogen 46008180

Catalog No. 50-159-07

Description

Description: The 53-6.7 monoclonal antibody reacts with the mouse CD8a molecule. CD8a is an approximately 32-34 kDa cell surface receptor expressed either as a heterodimer with the CD8 beta chain (CD8 alpha beta) or as a homodimer (CD8 alpha alpha). A majority of thymocytes and a subpopulation of mature alpha beta TCR T cells express CD8 alpha beta while gamma delta TCR T cells, a subpopulation of intestinal intraepithelial lymphocytes (IELs) and dendritic cells express CD8 alpha alpha. CD8 binds to MHC class I and through its association with protein tyrosine kinase p56lck plays a role in T cell development and activation of mature T cells. Applications Reported: This 53-6.7 antibody has been reported for use in flow cytometric analysis. Applications Tested: This 53-6.7 antibody has been tested by flow cytometric analysis of mouse spleen cells. This can be used at less than or equal to 0.125 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest. PerCP-eFluor™ 710 emits at 710 nm and is excited with the blue laser (488 nm); it can be used in place of PerCP-Cyanine5.5.

We recommend using a 710/50 bandpass filter, however, the 695/40 bandpass filter is an acceptable alternative. Please make sure that your instrument is capable of detecting this fluorochrome. Fixation: Samples can be stored in IC Fixation Buffer (cat. 00-8222) (100 µL cell sample + 100 µL IC Fixation Buffer) or 1-step Fix/Lyse Solution (cat. 00-5333) for up to 3 days in the dark at 4°C with minimal impact on brightness and FRET efficiency/compensation. Some generalizations regarding fluorophore performance after fixation can be made, but clone specific performance should be determined empirically. Excitation: 488 nm; Emission: 710 nm; Laser: Blue Laser. Filtration: 0.2 μm post-manufacturing filtered. CD8 (Cluster of Differentiation 8) is a cell surface glycoprotein found on most cytotoxic T lymphocytes that mediate efficient cell-cell interactions within the immune system. The CD8 antigen acts as a co-receptor with the T-cell receptor on the T lymphocyte to recognize antigens displayed by an antigen presenting cell (APC) in the context of class I MHC molecules. CD8 is found on a T cell subset of normal cytotoxic/suppressor cells which make up approximately 20-35 % of human peripheral blood lymphocytes. The CD8 antigen is also detected on natural killer (NK) cells, subpopulations of peripheral blood null cells, thymocytes and bone marrow cells. The CD8 co-receptor functions as either a homodimer composed of two alpha chains, or as a disulfide-linked heterodimer composed of one alpha and one beta chain. Both alpha and beta chains share significant homology to immunoglobulin variable light chains. The majority of CD8+ T cells express CD8 as a alpha/beta heterodimer. In HIV, the HIV-2 envelope glycoprotein binds CD8 alpha chain (but not the beta chain).

Specifications

• Antigen: CD8a
• Classification: Monoclonal
• Concentration: 0.2 mg/mL
• Formulation: PBS with 0.1% gelatin and 0.09% sodium azide; pH 7.2
• Gene Accession No.: P01731
• Gene Symbols: Cd8a
• Purification Method: Affinity chromatography
• Regulatory Status: RUO
• Gene ID (Entrez): 12525
• Content And Storage: 4° C, store in dark, DO NOT FREEZE!
• Form: Liquid

• Applications: Flow Cytometry
• Clone: 53-6.7
• Conjugate: PerCP-eFluor 710
• Gene: Cd8a
• Gene Alias: CD8, Leu-2, MAL, p32, CD8a
• Host Species: Rat
• Quantity: 25 μg
• Primary or Secondary: Primary
• Target Species: Mouse
• Product Type: Antibody
• Isotype: IgG2a κ

For Research Use Only.