Zebrafish Mib1 Antibody / Mind bomb 1

Mib1 functions by promoting the ubiquitination and endocytosis of Delta ligands on the surface of signal sending cells. This endocytosis is required for activation of the Notch receptor in neighboring cells. In zebrafish embryos, Mib1 is expressed in regions undergoing active cell differentiation and tissue segmentation. Loss of Mib1 function leads to widespread defects in neurogenesis, somitogenesis, and other Notch dependent processes. Studies using zebrafish mutants have shown that Mib1 is critical for lateral inhibition in the developing nervous system, the formation of the segmented body axis, and the maintenance of progenitor pools in various tissues. Because of its conserved function across vertebrates, zebrafish Mib1 is a widely used model for understanding the molecular mechanisms of Notch signaling and its role in development and disease. Zebrafish Mib1 is especially valuable in genetic and pharmacological screens aimed at identifying modifiers of the Notch pathway and related developmental disorders.