The 131411 monoclonal antibody specifically recognizes NKG2A which is also known as NK cell receptor A, Natural killer cell lectin, Natural killer group protein 2, C-lectin type II protein, or CD159 antigen-like family member A (CD159a). NKG2A (CD159a) is encoded by KLRC1 (killer cell lectin like receptor C1) which belongs to the killer cell lectin-like receptor (KLR) family. This type II transmembrane glycoprotein contains a C-type lectin domain in its extracellular region and two immunoreceptor tyrosine-based inhibitory motifs (ITIMs) in its intracellular region. NKG2A (CD159a) is expressed on NK cells and some T cells. NKG2A (CD159a) forms a disulfide-bonded heterodimer with CD94 that can bind to MHC class I HLA-E molecules on target cells and inhibit NK cell activation.
The antibody was conjugated to BD Horizon BUV615 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome with an Ex Max near 350 nm and an Em Max near 615 nm. BD Horizon Brilliant BUV615 can be excited by the ultraviolet laser (355 nm) and detected with a 610/20 filter and a 595 nm LP. Due to the excitation of the acceptor dye by the blue/yellow-green laser line, there may be significant spillover into channels detecting PE-CF594 like emissions (eg, 610/20-nm filter).