• Species Reactivity

  Human

• Specificity

  Detects human CD161 in direct ELISAs.

• Source

  Monoclonal Mouse IgG2b Clone # 702228

• Immunogen

  BaF3 mouse pro-B cell line transfected with human CD161    
  Accession # Q12918

• Formulation

  Supplied 0.2 mg/mL in a saline solution containing BSA and Sodium Azide.

• Label

  Alexa Fluor 750

Applications

• Recommended    
  Concentration

  Sample

• Flow Cytometry

  0.25-1 µg/10    ⁶ cells

  Human peripheral blood lymphocytes

• 
  

Please Note: Optimal dilutions should be determined by each laboratory for each application.  are available in the Technical Information section on our website.

Preparation and Storage

• Shipping

  The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.

• Stability & Storage

  Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: CD161

CD161, also known as NKR-P1A and KLRB1, is a 40 kDa type II transmembrane glycoprotein that contains one C-type lectin domain in its extracellular region. CD161 is expressed as a disulfide-linked dimer on the surface of Th17 cells and NK cells as well as on subsets of CD1-restricted T cells, intestinal NT cells, peripheral memory T cells, monocytes, and dendritic cells. It binds to OCIL/CLEC2d, leading to an inhibition of NK cell-mediated cytotoxicity and IFN-g secretion. Alternatively, CD161 can enhance TCR activation to CD1d ligation. CD161  ⁺ cell populations are depleted in ulcerative colitis, Grave’s disease, and AIDS, although CD161  ⁺ T cells are activated during asthmatic attacks. Additional related proteins are expressed in mouse but not human: the inhibitory NKR‑P1B and D, and the stimulatory NKR‑P1A, C, and F. Human CD161 shares 47% aa sequence identity with mouse and rat NKR-P1A.

• Entrez Gene IDs:

  3820 (Human)

• Alternate Names:

  CD161 antigen; CD161; CLEC5B; CLEC5BC-type lectin domain family 5 member B; HNKR-P1a; killer cell lectin-like receptor subfamily B member 1; killer cell lectin-like receptor subfamily B, member 1; KLRB1; Ly59; Natural killer cell surface protein P1A; NKR; NKRP1; NKR-P1; NKRP1A; NKR-P1AMGC138614; NKRP1ANKR