CD300a (IRp60) Antigen

The CD300a, also known as inhibitory receptor protein (IRp60), is a surface molecule of 60 kDa expressed by all human natural killer (NK) cells. The IRp60 gene, located on human chromosome region 17q25 encodes a molecule, highly O- and N-glycosylated, belonging to the immunoglobulin superfamily (Ig-SF) that displays one extracellular Ig-like domain of the V-type, a hydrophobic transmembrane portion and a cytoplasmic tail containing ITIM motifs involved in the inhibitory function. The ligand of the CD300a is still unknown but CD300a does not appear to recognize HLA-class I molecules. Upon cross-linking, IRp60 recruits and activates SH2-containing phosphatases SHP-1 and SHP-2 which switch off the activating signaling cascade by dephosphorylating a variety of tyrosine phosphorylated proteins. Cross-linking of IRp60 by E59.126 monoclonal antibody strongly inhibits the spontaneous cytotoxicity of NK cells as well as the NK-mediated cytolytic activity induced via different non-HLA-specific or HLA-specific activating receptors. CD300a may play a more general role in the regulation of the immune response since it is expressed on other cell types, including T lymphocyte subsets, monocytes and granulocytes.


 Clone: E59.126  Isotype: IgG1 Mouse

The E59.126 antibody has been used in flow cytometry and Western blotting to characterize IRp60.
 

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Product Line Specifications

Format Liquid
Specificity CD300a
Form PE
Clone E59.126
Isotype IgG1 Mouse
Target Species Human
Flow Product Line IOTest
Item Specifications Referenced A22328

The specifications above are not representative of all reagents but only to the item/part number referenced in this Product Line Specifications table. Please view a product's detail page to view all product specifications for that particular reagent. 


Technical Documents