Recombinant Human AgRP C-Terminal Fragment Protein, CF

R&D Systems | Catalog # 3726-AG

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Key Product Details

  • R&D Systems E. coli-derived Recombinant Human AgRP C-Terminal Fragment Protein (3726-AG)
  • Quality control testing to verify active proteins with lot specific assays by in-house scientists
  • All R&D Systems proteins are covered with a 100% guarantee

Source

E. coli

Accession Number

O00253

Applications

Bioactivity
View all AgRP/ART Proteins and Enzymes »

Product Specifications

Source

E. coli-derived human AgRP/ART protein
Ser83-Thr132

Purity

>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.01 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Ser83

Predicted Molecular Mass

5.6 kDa

Activity

Measured by its ability to antagonize alpha -MSH-induced cAMP accumulation in HEK293 human embryonic kidney cells transfected with human Melanocortin-4 Receptor. Ollmann, M.M. et al. (1997) Science 278:135.
The ED50 for this effect is typically 0.03-0.15 µg/mL in the presence of 10 ng/mL of alpha -MSH.

Formulation, Preparation, and Storage

3726-AG
Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution

Reconstitute at 100 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.

Calculators

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: AgRP/ART

Agouti-Related Protein (AgRP), the protein product of the Agouti-Related Transcript (ART), is a neuropeptide that regulates energy metabolism and the development of obesity by antagonizing alpha -melanocyte stimulating hormone ( alpha -MSH) on MC-3 and MC-4 receptors (1 - 4). AgRP is predominantly expressed in the hypothalamus and adrenal medulla (5). Mature human AgRP is a 112 amino acid (aa) peptide; its C-terminal portion contains ten conserved cysteines that form five disulfide bonds (5, 6). Within the C-terminal region, human AgRP shares 80% and 72% aa sequence identity with mouse and rat AgRP, respectively. It shares 44% aa sequence identity with Agouti. As in the case of Agouti, the C-terminal cysteine-rich region is sufficient for biological activity (7). AgRP is 100 times more potent than Agouti in antagonizing MC-3 and MC-4 receptors (8). AgRP also induces the beta -arrestin dependent endocytosis of MC-3 and MC-4 (9). Hypothalamic expression of AgRP is upregulated in obesity and diabetes (5, 10), and chronic AgRP administration increases food intake and weight gain in rats (11). Genetically-linked polymorphisms of AgRP in humans are associated with susceptibility to anorexia nervosa (12, 13). In addition, AgRP inhibits the ACTH-induced synthesis of steroid hormones in a mechanism that does not involve melanocortin receptors (14).

References

  1. Martin, N.M. et al. (2006) Peptides 27:333.
  2. Fan, W. et al. (1997) Nature 385:165.
  3. Ollmann, M.M. et al. (1997) Science 278:135.
  4. Arora, S. and Anubhuti (2006) Neuropeptides 40:375.
  5. Shutter, J.R. et al. (1997) Genes Develop. 11:593.
  6. Kiefer, L.L. et al. (1998) Biochemistry 37:991.
  7. Jackson, P.J. et al. (2002) Biochemistry 41:7565.
  8. Fong, T.M. et al. (1997) Biochem. Biophys. Res. Commun. 237:629.
  9. Breit, A. et al. (2006) J. Biol. Chem. 281:37447.
  10. Katsuki, A. et al. (2001) J. Clin. Endocrinol. Metab. 86:1921.
  11. Small, C.K. et al. (2001) Diabetes 50:248.
  12. Vink, T. et al. (2001) Mol. Psychiatry 6:325.
  13. Dardennes, R.M. et al. (2007) Psychoneuroendocrinology 32:106.
  14. Doghman, M. et al. (2007) Mol. Cell. Endocrinol. 265-266:108.

Long Name

Agouti-related Protein

Alternate Names

ART

Entrez Gene IDs

181 (Human); 11604 (Mouse)

Gene Symbol

AGRP

UniProt

O00253

Additional AgRP/ART Products

Product Documents for Recombinant Human AgRP C-Terminal Fragment Protein, CF

Certificate of Analysis

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Product Specific Notices for Recombinant Human AgRP C-Terminal Fragment Protein, CF

For research use only

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