Reacts with CD16b, a glycosyl phosphatidyl inositol-anchored (GPI) protein expressed on human neutrophils. Human CD16 is the low affinity Fc gamma receptor III (Fc gamma RIII) and shows two distinct forms coded by two linked genes. One form is CD16a, a polypeptide-anchored form (Fc gamma RIIIA), present on natural killer cells and macrophages. The other form is CD16b the GPI-anchored form, Fc gamma RIIIB, found on human neutrophils. CD16b is polymorphic and the two codominant alleles are referred to as Neutrophil Antigen 1 (NA1) and Neutrophil Antigen 2 (NA2). Clone CLBgran11.5 reacts with neutrophils expressing the NA1 molecule. CD16b has been reported to participate in immune complex binding by resting neutrophils and also in neutrophil transendothelial migration by interacting with integrins during the inflammation response process.
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).