Ghrelin

Growth hormone (GH), produced and released from the anterior pituitary, controls body growth, carbohydrate-protein-lipid metabolism and water-electrolyte balance. GH secretagogues (GHSs) are synthetic compounds that are potent stimulators of GH release. GHSs, act through a novel orphan G-protein-coupled receptor (GPCR), the GHS receptor (GHS-R). Ghrelin ('ghre' is the Proto-Indo-European root of the word "grow") has been purified and identified from rat and human stomach as the endogenous ligand for the GHS-R. The rat and human mature Ghrelin (28-aa) are produced from 117 amino acids precursor. In rat stomach, a 28-aa Ghrelin and des-Gln14-Ghrelin (deletion of Gln14) are produced due to alternative splicing of Ghrelin mRNA. The activity of both Ghrelins is the same. However, des-Gln14-Ghrelin is only present in low amounts in the stomach, indicating that Ghrelin is the major active form. Ghrelin has an unusual modification at Ser3 residue that is n-octanoylated and it is essential for biological activity. Ghrelin is the first known example of a bioactive peptide modified by an acyl acid.\n\nApplications: \nSuitable for use in ELISA and Western Blot. Other applications not tested.\n\nRecommended Dilutions:\nWestern Blot: 1:1000-1:5000 (ECL) \nELISA: 1:10,000-1:100,000. Using 50-100ng control peptide/well.\nOptimal dilutions to be determined by the researcher.\n\nRecommended Control Peptide:\nG2033-75F: Ghrelin, Human Control Peptide\n\nStorage and Stability:\nMay be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.

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SPECIFICATIONS

Catalog Number

G2033-75D

Size

50ul

Applications

ELISA, WB

Hosts

Rabbit

Reactivities

Hum

Form

Supplied as a liquid in PBS, 0.05% sodium azide.

P Type

Pab

Purity

Serum

Isotype

IgG

References

1. Kojima M et al (1999) Nature 402, 656; 2. Hosoda H et al (2000) 3. J. Biol. Chem. 275, 2199; 4. Nakazato M et al (2001) Nature 409, 194; 5. Tschop et al (2000) Nature 407; 908.

Additional Info

Recognizes human ghrelin.