Recombinant Rat Notch-2 Fc Chimera Protein, CF

Catalog # Availability Size / Price Qty
1190-NT-050
R&D Systems Recombinant Proteins and Enzymes
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Recombinant Rat Notch-2 Fc Chimera Protein, CF Summary

Product Specifications

Purity
>90%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its binding ability in a functional ELISA. Immobilized rrNotch-2/Fc Chimera can bind rrJagged-1/Fc Chimera with an apparent KD <5 nM.
Source
Mouse myeloma cell line, NS0-derived rat Notch-2 protein
Rat Notch-2
(Leu26 - Glu492)
Accession # Q9QW30
IEGRMD Human IgG1
(Pro100 - Lys330)
N-terminus C-terminus
Accession #
N-terminal Sequence
Analysis
Leu26
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
76.5 kDa (monomer)
SDS-PAGE
105-115 kDa, reducing conditions

Product Datasheets

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1190-NT

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

1190-NT

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 500 μg/mL in sterile PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
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Background: Notch-2

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.

References
  1. Weinmaster, G. (2000) Curr. Opin. Genet. Dev. 10:363.
  2. Weinmaster, G. (1992) Development 116:931.
  3. Rebay, I. et al. (1991) Cell 67:687.
  4. Mumm, J.S. and R. Kopan (2000) Dev. Biol. 228:151.
  5. Bush, G. et al. (2001) Dev. Biol. 229:494.
Entrez Gene IDs
4853 (Human); 29492 (Rat)
Alternate Names
AGS2; hN2; neurogenic locus notch homolog protein 2; Notch (Drosophila) homolog 2; notch 2Notch homolog 2 (Drosophila); Notch homolog 2; Notch2; Notch-2

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