Cotton Rat CD8 alpha PE-conjugated Antibody

  • Species Reactivity
    Cotton Rat
  • Specificity
    Detects cotton rat CD8 alpha in direct ELISAs.
  • Source
    Monoclonal Mouse IgG2A Clone # JG12
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    NIH‑3T3 mouse embryonic fibroblast cell line transfected with cotton rat CD8 alpha and SP2/O mouse melanoma cell line transfected with cotton rat CD8 alpha.
    Accession # AAL55392
  • Formulation
    Supplied in a saline solution containing BSA and Sodium Azide.
  • Label
  • Flow Cytometry
    10 µL/106 cells
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Detection of CD8 alpha in Cotton Rat Splenocytes by Flow Cytometry. Cotton rat splenocytes were stained with Mouse Anti-Cotton Rat CD8 alpha PE‑conjugated Monoclonal Antibody (Catalog # FAB7080P, filled histogram) or isotype control antibody (Catalog # IC003P, open histogram). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
  • Shipping
    The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
  • Stability & Storage
    Protect from light. Do not freeze.
    • 12 months from date of receipt, 2 to 8 °C as supplied.
Background: CD8
CD8 alpha (CD8 alpha ; also OX8, Leu-2 and Lyt-2) is a 23 kDa (predicted) member of the Ig superfamily of molecules. It is found on immature thymocytes, cytotoxic and suppressor T cells, select mast cells, and splenic and bone marrow dendritic cells (in rodent). On T cells, CD8 alpha exists as either a disulfide linked homodimer, or heterodimer bound to CD8 beta. CD8 alpha beta is best known as a coreceptor for the TCR, enhancing TCR signaling. CD8 alpha alpha serves a different function and acts as a TCR corepressor that blocks T cell activation. Based on rat, mature Sigmodon hispidus (cotton rat) CD8 alpha is a 210 amino acid (aa) type I transmembrane protein that consists of a 161 aa extracellular region (aa 24-184) with one V-type Ig-like domain (aa 35-135), and a 30 aa cytoplasmic tail (aa 206-235). Although Sigmodon hispidus is called a rat, it is not. It is a rodent, and rat CD8 alpha is the closest ortholog to cotton rat CD8 alpha currently reported. Over the extracellular region, rat and cotton rat CD8 alpha share only 54% aa identity. Rat CD8 alpha runs at 34-39 kDa in SDS-PAGE, and possesses one utilized N-linked and O-linked glycosylation site (vs. no N-linked sites in cotton rat CD8 alpha ). Based on this organization, and assuming O-linked glycosylation, cotton rat CD8 alpha would be expected to run at about 30-34 kDa in SDS-PAGE. Over aa 24-182, cotton rat CD8 alpha shares 54% and 48% aa identity with rat and mouse CD8 alpha, respectively.   
  • Entrez Gene IDs:
    925 (Human); 12525 (Mouse); 24930 (Rat)
  • Alternate Names:
    CD8; CD8A
Related Research Areas
Isotype Controls
Description Application Cat# Citations Images  

Mouse IgG2A PE-conjugated Antibody

Ctrl IC003P 10  
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Staining Reagents
Description Application Cat# Citations Images  

Flow Cytometry Staining Buffer (1X)

Flow FC001 3
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Flow Cytometry Mouse Lyse Buffer (10X)

Flow FC003 1
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Flow Cytometry Human Lyse Buffer (10X)

Flow FC002 1
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