Human CD81 APC-conjugated Antibody

  • Species Reactivity
  • Specificity
    Detects human CD81. Stains human CD81 transfectants but not irrelevant transfectants.
  • Source
    Monoclonal Mouse IgG2B Clone # 454720
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    HEK293 human embryonic kidney cell line transfected with human CD81
    Accession # P60033
  • 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 CD81 in Human Lymphocytes by Flow Cytometry. Humanperipheral blood  lymphocytes were stained with Mouse Anti-Human CD81 APC‑conjugated Monoclonal Antibody (Catalog # FAB4615A, filled histogram) or isotype control antibody (Catalog # IC0041A, 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: CD81

CD81, also known as TAPA-1 and TM4SF4, is a widely expressed protein in the tetraspanin family. CD81 is a multifunctional protein that interacts with a variety of other molecules, including tetraspanins, and is important for organization of the plasma membrane into microdomains. CD81 facilitates B cell and T cell activation and is an integrin-binding adhesion molecule. CD81 expression on lymphocytes is altered during infection by hepatitis C virus or HIV-1 and contributes to the pathogenicity of those viruses. Human CD81 shares 92%‑93% aa sequence identity with mouse and rat CD81.

  • Entrez Gene IDs:
    975 (Human); 12520 (Mouse); 25621 (Rat)
  • Alternate Names:
    CD81 antigen (target of antiproliferative 1); CD81 antigen; CD81 molecule; CD81; CVID6; TAPA1; TAPA-1; Target of the antiproliferative 1; Tetraspanin-28; TSPAN28; Tspan-28; tspan-28,26 kDa cell surface protein TAPA-1; TSPAN28S5.7
Related Research Areas
Isotype Controls
Description Application Cat# Citations Images  

Mouse IgG2B APC-conjugated Antibody

Ctrl IC0041A 4  
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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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