Alexa Fluor® 647 Anti-Notch1 antibody [EP1238Y]

Supplementary info

Activity summary

Notch1 also known as Notch-1 is a transmembrane receptor involved in cell fate decisions. It belongs to the Notch protein family and has a molecular weight of around 270 kDa. Notch1 is expressed widely particularly in tissues such as blood cells and neuronal tissue. The receptor consists of extracellular EGF-like repeats a transmembrane domain and an intracellular domain that translocates to the nucleus upon activation. Notch1 plays a critical role in intercellular communication through ligand engagement which then triggers a series of proteolytic cleavages that release the Notch intracellular domain (NICD) for nuclear translocation.

Biological function summary

Notch1 is essential in various cellular processes including differentiation proliferation and apoptosis. It functions as part of a complex signaling pathway that regulates these processes. Notch1 interacts with other elements like Jagged and Delta/Serrate/LAG-2 (DSL) family ligands to control gene expression patterns that determine cell lineage outcomes. This interaction affects the development of many systems such as the immune and nervous systems. Consequently Notch1 significantly influences the formation of organs and the maintenance of stem cell populations.

Pathways

Notch1 plays a significant role in both the Notch signaling and the Wnt signaling pathways. In the Notch signaling pathway Notch1 upon ligand binding partners with CSL (CBF1/RBP-Jκ in mammals) and Mastermind-like proteins for transcriptional regulation. This pathway interlinks with the Wnt pathway that involves proteins like β-catenin affecting the regulation of gene transcription. The interplay between Notch1 and these pathways is fundamental in determining outcomes in cell proliferation and differentiation emphasizing the interconnected nature of signaling networks.

Associated diseases and disorders

Notch1 is associated with T-cell acute lymphoblastic leukemia and breast cancer. Altered Notch1 signaling often through gain-of-function mutations can drive oncogenesis by disrupting normal cell differentiation and promoting uncontrolled proliferation. In T-cell acute lymphoblastic leukemia aberrant activation of Notch1 leads to increased expression of target genes working closely with related proteins like c-Myc. In breast cancer dysregulation of Notch1 signaling may facilitate tumor growth and metastasis indicating its role as a therapeutic target.