The J4-117 monoclonal antibody specifically recognizes CD72. CD72 is a 39-43 kDa type II integral membrane protein that belongs to the C-type lectin superfamily. CD72 is expressed on B cells from early precursor stages through mature B cells. CD72 is not expressed on plasma cells. CD72 is also expressed on follicular dendritic reticulum cells and some macrophages. CD72 has been reported to bind to CD5, a glycoprotein expressed on all mature T cells and a subpopulation of B cells, suggesting a role in regulating T- and B-cell activation and proliferation.
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.