Description: This HMN3-133 monoclonal antibody reacts with mouse Notch3, one of four members of the Notch family of receptors. Notch receptors are 300-kDa single-pass transmembrane proteins. While the extracellular domain contains numerous epidermal growth factor-like repeats for ligand binding, the intracellular domain is involved in cell signaling. Upon binding its membrane-bound ligand (either Delta or Jagged), the Notch receptor undergoes proteolytic cleavage, first by ADAM-family metalloproteases and then by gamma-secretase. The second cleavage event releases the Notch intracellular domain (NICD), which subsequently translocates into the nucleus, heterodimerizes with the DNA-binding protein RBP-J, recruits co-activator molecules, and ultimately activates transcription. Notch 3 expression has been demonstrated on regulatory T cells and some thymocyte subsets, including CD4-CD8- and CD8SP cells. In addition, this Notch receptor is prevalent in vascular smooth muscle and the central nervous system. In addition to its role in stem cell hematopoiesis, Notch 3 plays a pivotal role in mammalian T cell lineage commitment and thymocyte development. Specifically, Notch 3 has been implicated in the CD4-CD8- double negative (DN) to CD4+CD8+ double positive transition with greatest expression in DN3 (CD4-CD8-CD25+CD44-) cells. Notch 3 may also be involved in regulating the pre-TCR checkpoint via crosstalk with the NFkappaB and E2A signaling pathways.Finally, overexpression of Notch 3 has been implicated in leukemia. Applications Reported: This HMN3-133 antibody has been reported for use in flow cytometric analysis. Applications Tested: This HMN3-133 antibody has been tested by flow cytometric analysis of mouse thymocytes. This can be used at less than or equal to 0.25 µg per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest. Excitation: 633-647 nm; Emission: 660 nm; Laser: Red Laser. Filtration: 0.2 µm post-manufacturing filtered. NOTCH3 is the third discovered human homologue of the Drosophilia melanogaster type I membrane protein notch. In Drosophilia, notch interaction (with its cell-bound ligands delta, serrate) establishes an intercellular signalling pathway that plays a key role in neural development. Homologues of the notch-ligands have also been identified in human. NOTCH3 functions as a receptor for membrane-bound ligands Jagged1, Jagged2, and Delta1 to regulate cell-fate determination. Mutations in NOTCH3 have been identified as the underlying cause of cerebral autosomal domit arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL).
|4° C, store in dark, DO NOT FREEZE!|
|PBS with 0.1% gelatin and 0.09% sodium azide; pH 7.2|
For Research Use Only.
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