The 2D3 monoclonal antibody specifically binds to CD249. CD249 is encoded by ENPEP and is also known as Aminopeptidase A (APA/AP-A), Glutamyl aminopeptidase (EAP), and gp160. CD249 is expressed by epithelial and endothelial cells in a variety of tissues including those that comprise the proximal tubules and glomeruli of the kidneys. It is also expressed by early B-lineage cells and cell lines. CD249 belongs to the peptidase M1 family and catalyzes the release of N-terminal glutamate (and to a lesser degree, aspartate) from peptides. This ectoenzyme catalyzes the conversion of angiotensin II to angiotensin III which is important in the local regulation of blood pressure. It may also play roles in the regulation of angiogenesis and development of B cells.
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.