The EMab-134 monoclonal antibody specifically recognizes the epidermal growth factor receptor (EGF-R). The EGF-R is a transmembrane glycoprotein of approximately 170 kDa that is expressed on most cells. It consists of a glycosylated extracellular domain which binds to epidermal growth factor (EGF), a transmembrane domain, and an intracellular domain with tyrosine-kinase activity essential for signal transduction. The epitope recognized by EMab-134 is an extracellular peptide that is not affected by glycosylation. The EGF-R plays an important role in the growth and differentiation of many cellular types. Transforming growth factor α (TGFα), vaccinia virus growth factor, and related growth factors can also bind to and signal through the EGF-R.
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.