Kisspeptin-10: A Laboratory Research Reference

Kisspeptin-10 is a synthetic decapeptide derived from the kisspeptin family of peptides. It is studied in laboratory research for its activity at the GPR54 (KISS1R) receptor and its influence on reproductive signalling pathways in experimental models.

This page is a non-promotional scientific reference for researchers. It summarises the chemical identity, molecular characteristics, mechanism as described in the literature, research areas, and analytical testing of kisspeptin-10. It does not provide dosing, therapeutic, or human-use guidance of any kind. Kisspeptin-10 supplied by Bulk Aussie Peptides is for laboratory research purposes only.

What Is Kisspeptin-10?

Kisspeptin-10 is a ten-amino-acid peptide representing a short, biologically active fragment of the kisspeptin precursor. The kisspeptin peptides were identified as ligands for the GPR54 receptor, itself implicated in the regulation of reproductive physiology. Kisspeptin-10 retains the carboxy-terminal RF-amide motif that is characteristic of the family and important for receptor recognition.

For background on how synthetic research peptides are produced and verified, see the synthetic peptides research guide.

Molecular Characteristics

Several molecular properties are used to identify kisspeptin-10 in analytical documentation:

• Classification: a synthetic RF-amide peptide, a fragment of the kisspeptin precursor and an agonist at the GPR54 (KISS1R) receptor.
• Sequence: a ten-amino-acid peptide; the exact sequence reproduced in a given study should be read from that study’s methods section.
• Molecular weight: reported in Daltons (Da) on product documentation; the measured value on a Certificate of Analysis should be compared against the theoretical mass derived from the sequence.
• Physical form: supplied as a lyophilised (freeze-dried) powder, the standard presentation for research peptides.

How Kisspeptin-10 Works

Kisspeptin-10 exerts its studied effects by binding to and activating GPR54 (also designated KISS1R), a G-protein-coupled receptor. In laboratory models, activation of this receptor is associated with intracellular calcium mobilisation and downstream signalling that influences the secretion of gonadotropin-releasing hormone, placing the kisspeptin/GPR54 system at an upstream position in reproductive signalling.

The original identification of kisspeptins as GPR54 ligands emerged from work tracing the KISS1 gene, which was first described as a metastasis suppressor in a separate line of investigation. These observations are preclinical and describe receptor pharmacology in model systems; they do not constitute a therapeutic use.

Areas of Scientific Research

The research literature describes several lines of investigation involving kisspeptin-10:

• GPR54/KISS1R pharmacology: characterisation of receptor binding and signal transduction.
• Reproductive signalling: studies of the kisspeptin/GPR54 axis in experimental endocrine and reproductive models.
• Peptide family study: comparison of kisspeptin-10 with other kisspeptin fragments to understand structure–activity relationships.

These investigations are conducted in vitro or in approved animal research models under institutional oversight. They do not translate to approved human use.

Analytical Testing

As with other research peptides, kisspeptin-10 is characterised using:

• HPLC for purity assessment, reported as a percentage of total peak area.
• Mass spectrometry for identity confirmation, by comparing measured molecular mass to the theoretical value.

Guidance on interpreting the resulting documents is available in the article on how to read a peptide Certificate of Analysis.

Storage and Handling

In a laboratory context, lyophilised kisspeptin-10 is typically stored in a freezer, protected from light and moisture, and handled according to the product-specific documentation. Once reconstituted, the resulting solution is refrigerated and used within the timeframe stated in the documentation. General guidance is covered in the peptide storage and stability reference.

Frequently Asked Questions

• What is kisspeptin-10? Kisspeptin-10 is a synthetic ten-amino-acid fragment of the kisspeptin precursor.
• What receptor does kisspeptin-10 target? It acts as an agonist at the GPR54 (KISS1R) receptor.
• What is the RF-amide motif? It is the carboxy-terminal sequence motif shared by the kisspeptin family and important for receptor recognition.
• What is kisspeptin-10 studied for? It is investigated in laboratory models for GPR54 pharmacology and reproductive signalling.
• How is kisspeptin-10 purity tested? Purity is commonly estimated by HPLC, while identity is confirmed by mass spectrometry.

References

• Kotani, M., Detheux, M., Vandenbogaerde, A., Communi, D., Vanderwinden, J.-M., Le Poul, E., et al. (2001). The metastasis suppressor gene KiSS-1 encodes kisspeptins, the natural ligands of the orphan G protein-coupled receptor GPR54. Journal of Biological Chemistry, 276(37), 34631–34636. PubMed 11457843
• Ohtaki, T., Shintani, Y., Honda, S., Matsumoto, H., Hori, A., Kanehashi, K., et al. (2001). Metastasis suppressor gene KiSS-1 encodes peptide ligand of a G-protein-coupled receptor. Nature, 411(6837), 613–617. PubMed 11385580

Related Research Resources

• Synthetic Peptides: Research Guide — how research peptides are produced and verified.
• Reconstituting Research Peptides — preparing a working solution from lyophilised material.
• Reading a Peptide Certificate of Analysis — interpreting purity and identity data.