The J90-462 monoclonal antibody specifically recognizes CD6. CD6 is a 105-130 kDa type I transmembrane glycoprotein that belongs to the scavenger receptor family. It is expressed on most thymocytes and peripheral T cells. CD6 is highly expressed on CD3-high thymocytes and expressed at lower levels on CD4+ CD8+ double positive and CD4+CD8- or CD4-CD8+ single positive thymocytes. CD6 is also reportedly expressed at low levels by some neurons. CD6 serves as a receptor for CD166, also known as Activated Leukocyte Cell Adhesion Molecule (ALCAM). CD6 plays a role in adhesion and migration during organogenesis. The CD6 intracellular domain is constitutively phosphorylated which suggests that CD6 may play a signaling role in T cell activation.
The antibody was conjugated to BD Horizon Red 718, which has been developed exclusively for BD Biosciences as a better alternative to Alexa Fluor® 700. BD Horizon Red 718 can be excited by the red laser (628 – 640 nm) and, with an Em Max around 718 nm, it can be detected using a 730/45 nm filter. Due to similar excitation and emission properties, we do not recommend using R718 in combination with APC-R700 or Alexa Fluor® 700.