The MHN1-519 monoclonal antibody specifically binds to an extracellular domain of human Notch1. Notch1 is a type 1 transmembrane glycoprotein receptor and member of the Notch family that includes Notch1-Notch4. Notch1 is cleaved in the Golgi and presents as a cell surface heterodimeric receptor. The Notch1 receptor can bind to several membrane-bound ligands including Jagged1, Jagged2, Delta1 and Delta4. Upon ligand binding, Notch1 undergoes proteolytic cleavage that results in the release of the Notch intracellular domain, NICD. NICD translocates to the nucleus where it forms a transcriptional activator complex with various transcriptional factors. These multimeric complexes either positively or negatively regulate the expression of multiple genes including those that orchestrate many facets of embryonic development and the subsequent functioning of multiple organ systems such as the immune, cardiovascular and nervous systems. Within the immune system, Notch signaling significantly affects the development, proliferation, differentiation and survival of numerous cell types including thymocytes and subsets of T and B lymphocytes and dendritic cells. In altered forms, Notch1 has been associated with certain cardiovascular diseases and with some lymphocyte neoplasms.
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.