Notch-4: Proteins and Enzymes

Notch proteins (so named for 'notches' in fly wings) are type I transmembrane glycoproteins involved in specifying cell fates and defining boundaries between different cell types during developmental processes. Notch extracellular domains are large, having 34-36 EGF-like repeats followed by three notch/Lin-12 repeats. Notch proteins interact with transmembrane ligands Jagged, Delta, and Serrate expressed on the surface of a neighboring cell. Upon ligand binding, a series of cleavage events ...