The B-K29 monoclonal antibody specifically binds to CD262 which is also known as, TNF-related apoptosis-inducing ligand receptor 2 (TRAIL Receptor 2, TRAIL-R2), Death receptor 5 (DR5), TRICK2, or KILLER. CD262 is a type I transmembrane protein that is encoded by TNFRSF10B (Tumor necrosis factor receptor superfamily, member 10b). CD262 forms a homotrimeric receptor complex that can bind homotrimeric TRAIL (CD253/APO-2 Ligand) and transduce apoptotic signals intracellularly through its cytoplasmic death domain (DD). CD262 is differentially expressed on cells from a wide variety of normal tissues and tumors. CD262 expression is upregulated by Interferon-α (IFN-α).
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).