microarray: suitable western blot: 1:1,000 using minimum working antibody dilution using a whole cell extract of the HEK293 cell line stably transfected with human nicastrin.
Nicastrin (NCSTN) is a type I transmembrane glycoprotein (709 amino acids) that interacts with both presenilin-1 (PS1) and presenilin-2 (PS2). This gene is located on human chromosome 1q23.
Specificity
Rabbit polyclonal anti-Nicastrin recognizes human nicastrin (110 kDa) by immunoblotting. Staining of nicastrin in immunoblotting is specifically inhibited with nicastrin immunizing peptide.
Immunogen
synthetic peptide corresponding to the C-terminus of human nicastrin (amino acids 693-709) conjugated to KLH. The corresponding sequence is identical in mouse.
Application
Anti-Nicastrin antibody produced in rabbit has been used in:
Nicastrin has a key role in the regulation of presenilin-mediated cleavage of the b-amyloid precursor protein (b-APP) and Notch/GLP-1. Nicastrin binds to the membrane-tethered form of Notch and is essential for the intramembrane cleavage of Notch to generate Notch intracellular domain (NICD), which is involved in intracellular signaling. It has been suggested that nicastrin binds substrates of presenilin/g-secretase complexes or modulates g-secretase activity. Suppression of nicastrin expression in C. elegansembryos induces a subset of notch/glp-1 phenotypes similar to those induced by simultaneous null mutations in both presenilin homologues of C. elegans (sel-12 and hop-1). Thus, increasing evidence indicates that both nicastrin and presenilins are necessary components for the intramembrane proteolysis of proteins such as b-APP and Notch, and implicates a direct role for nicastrin in the pathogenesis of Alzheimer′s disease and in the regulation of Notch signaling in vivo.
Physical form
Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 15 mM sodium azide.
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
The Gene Encoding Nicastrin, a Major gamma-Secretase Component, Modifies Risk for Familial Early-Onset Alzheimer Disease in a Dutch Population-Based Sample
Dermaut B, et al.
American Journal of Human Genetics, 70, 1568-1574 (2002)
Amyloid-β peptide ending at 42nd residue (Aβ42) is believed as a pathogenic peptide for Alzheimer disease. Although γ-secretase is a responsible protease to generate Aβ through a processive cleavage, the proteolytic mechanism of γ-secretase at molecular level is poorly understood.
Aph-1 Associates Directly with Full-length and C-terminal Fragments of gamma-Secretase Substrates
Chen AC, et al.
The Journal of Biological Chemistry, 285(15), 11378-11391 (2010)
The Journal of biological chemistry, 278(19), 16474-16477 (2003-03-20)
Gamma-secretase is a high molecular weight multicomponent protein complex with an unusual intramembrane-cleaving aspartyl protease activity. Gamma-secretase is intimately associated with Alzheimer disease because it catalyzes the proteolytic cleavage, which leads to the liberation of amyloid beta-peptide. At least presenilin
Intramembrane proteases execute fundamental biological processes ranging from crucial signaling events to general membrane proteostasis. Despite the availability of structural information on these proteases, it remains unclear how these enzymes bind and recruit substrates, particularly for the Alzheimer's disease-associated γ-secretase.
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