Rat Notch-2 Antibody Summary
Accession # Q9QW30
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Notch‑2 in Rat Brain. Notch‑2 was detected in perfusion fixed frozen sections of rat brain (choroid plexus) using 5 µg/mL Goat Anti-Rat Notch‑2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1190) overnight at 4 °C. Tissue was stained with the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Frozen Tissue Sections.
Notch‑2 in Embryonic Rat Liver. Notch‑2 was detected in immersion fixed frozen sections of embryonic rat liver (15 d.p.c.) using 1.7 µg/mL Goat Anti-Rat Notch‑2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF1190) overnight at 4 °C. Tissue was stained with the Anti-Goat HRP-DAB Cell & Tissue Staining Kit (brown; Catalog # CTS008) and counterstained with hematoxylin (blue). View our protocol for Chromogenic IHC Staining of Frozen Tissue Sections.
Preparation and Storage
- 12 months from date of receipt, -20 to -70 °C as supplied.
- 1 month, 2 to 8 °C under sterile conditions after reconstitution.
- 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Rat Notch-2 is a 300 kDa, type I transmembrane glycoprotein involved in a number of early-event developmental processes (1). In both vertebrates and invertebrates, Notch signaling is important for specifying cell fates and for defining boundaries between different cell types. The molecule is synthesized as a 2472 amino acid (aa) precursor that contains a putative 27 aa signal sequence, a 1650 aa extracellular region, a 23 aa transmembrane (TM) segment and a 772 aa cytoplasmic domain (2). The large Notch extracellular domain has 36 EGF-like repeats followed by three notch/Lin-12 repeats (LNR). Of the 36 EGF-like repeats, the 11th and 12thEGF-like repeats have been shown to be both necessary and sufficient for binding the ligands Serrate and Delta, in Drosophila (3). Cell surface Notch receptor is thought to be a heterodimer consisting of the ligand binding extracellular region associated with the remaining transmembrane protein, as a result of post-translational proteolytic cleavage by a furin-like enzyme. Upon ligand binding, additional proteolysis events result in the release of the Notch intracellular domain (NICD). NICD translocates into the nucleus and initiates transcription of Notch-responsive genes (4). Thus Notch acts as both a ligand-binding receptor and a nuclear factor that regulates transcription. In addition, an alternative Notch signaling pathway that is mediated by the full-length, uncleaved form of Notch-1 at the cell surface has been reported to suppress differentiation of myoblasts in response to ligand binding (5). Rat Notch-2 shows 92% and 95% aa identity to human and mouse Notch-2 extracellular domains, respectively. Relative to the extracellular region of rat Notch-1, rat Notch-2 exhibits 56% aa identity.
- Weinmaster, G. (2000) Curr. Opin. Genet. Dev. 10:363.
- Weinmaster, G. (1992) Development 116:931.
- Rebay, I. et al. (1991) Cell 67:687.
- Mumm, J.S. and R. Kopan (2000) Dev. Biol. 228:151.
- Bush, G. et al. (2001) Dev. Biol. 229:494.
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