Prokineticin 2 (PK2) Isoform 2 (82-108) (Human) peptide

Prokineticin 2 (PK2) Isoform 2 (82-108) (Human) peptide

• Handling and Storage of Synthetic Peptides
• Material Safety Data Sheets (MSDS)

Batch to batch variation of the purity

H-MHHTCPCLPGLACLRTSFNRFICLAQK-OH

H-Met-His-His-Thr-Cys-Pro-Cys-Leu-Pro-Gly-Leu-Ala-Cys-Leu-Arg-Thr-Ser-Phe-Asn-Arg-Phe-Ile-Cys-Leu-Ala-Gln-Lys-OH

27

95.23%

C₁₃₃H₂₁₄N₄₀O₃₃S₅

3061.68

Synthetic

Powder

Prokineticin 2 (PK2) is a hypothalamic neuropeptide expressed in central nervous system areas known to be involved in food intake. We therefore hypothesized that PK2 plays a role in energy homeostasis. Hypothalamic PK2 expression was reduced by fasting. ICV administration of PK2 to rats potently inhibited food intake, whereas anti-PK2 antibody increased food intake, suggesting that PK2 is an anorectic neuropeptide. ICV administration of PK2 increased c-fos expression in proopiomelanocortin neurons of the arcuate nucleus (ARC) of the hypothalamus. In keeping with this, PK2 administration into the ARC reduced food intake and PK2 increased the release of α-melanocyte–stimulating hormone (α-MSH) from ex vivo hypothalamic explants. In addition, ICV coadministration of the α-MSH antagonist agouti-related peptide blocked the anorexigenic effects of PK2. Chronic peripheral administration of PK2 reduced food and body weight in lean and obese mice.

Normally, this peptide will be delivered in lyophilized form and should be stored in a freezer at or below -20 °C. For more details, please refer to the manual: Handling and Storage of Synthetic Peptides

• Gardiner JV, Bataveljic A, Patel NA, Bewick GA, Roy D, Campbell D, Greenwood HC, Murphy KG, Hameed S, Jethwa PH, Ebling FJ, Vickers SP, Cheetham S, Ghatei MA, Bloom SR, Dhillo WS. Prokineticin 2 is a hypothalamic neuropeptide that potently inhibits food intake. Diabetes. 2010 Feb;59(2):397-406. doi: 10.2337/db09-1198. Epub 2009 Nov 23. PMID: 19933997; PMCID: PMC2809973.

Trifluoroacetic acid (TFA) is a common counterion from the purification process using High-Performance Liquid Chromatography (HPLC). The presence of TFA can affect the peptide's net weight, appearance, and solubility.

Impact on Net Weight: The TFA salt contributes to the total mass of the product. In most cases, the peptide content constitutes >80% of the total weight, with TFA accounting for the remainder.

Solubility: TFA salts generally enhance the solubility of peptides in aqueous solutions.

In Biological Assays: For most standard in vitro assays, the residual TFA levels do not cause interference. However, for highly sensitive cellular or biochemical studies, please be aware of its presence.