The 3D10 monoclonal antibody specifically binds to mouse Lymphocyte antigen 49H (Ly-49H; also known as Klra8 or Killer cell lectin-like receptor 8). The 3D10 antibody does not crossreact with related molecules such as Ly-49A, C, D or G2. Ly-49H is a type II transmembrane protein and a member of the Ly-49 C-type lectin multigene family of receptors expressed by NK cells. Cell surface Ly-49H is expressed by a subset of NK cells but not by NKT cells. Ly-49H is expressed by C57BL/6 and NWNA but not by BALB/c or DBA/2 mouse NK cells. Cell surface Ly-49H presents as a ~110 kDa disfulfide-linked homodimer and associates with signaling subunits such as DAP10 and DAP12 for optimal transduction of intracellular activation signals. Crosslinking of Ly-49H with the 3D10 antibody reportedly induces NK cell cytotoxicity and cytokine production. Ly-49H recognizes the mouse cytomegalovirus m157 glycoprotein that is expressed by infected cells and is required for protection against cytomegalovirus infection.
The antibody was conjugated to BD Horizon™ BUV496 which is part of the BD Horizon Brilliant™ Ultraviolet family of dyes. This dye is a tandem fluorochrome of BD Horizon BUV395 with an Ex Max of 348-nm and an acceptor dye with an Em Max at 496-nm. BD Horizon BUV496 can be excited by the ultraviolet laser (355 nm) and detected with a 515/30 nm filter with a 450LP. Due to the excitation of the acceptor dye by other laser lines, there may be significant spillover into the channel detecting BD Horizon V500 or BV510 (eg, 525/40-nm filter). However, the spillover can be corrected through compensation as with any other dye combination.