Quick answer: KPV (Lys-Pro-Val) is the last three amino acids of α-MSH, a 13-amino-acid peptide hormone. It is much smaller than its parent, and published laboratory research has examined it mainly in inflammatory signaling and gut-barrier models. Evidence is early and comes from cell and preclinical work.
How is KPV related to α-MSH?
α-MSH stands for alpha-melanocyte-stimulating hormone. It is a chain of 13 amino acids. KPV is the final three at the C-terminal end of that chain, which is why it is also listed as α-MSH(11-13), alpha-MSH 11-13 or the KPV tripeptide.
Think of it as a short piece cut from a longer sentence. Researchers study the piece to ask which part of the parent carries a given activity.
KPV vs α-MSH: side by side
| Feature | KPV | α-MSH |
|---|---|---|
| Length | 3 amino acids | 13 amino acids |
| Sequence | Lys-Pro-Val | Full 13-residue hormone, which includes KPV at its end |
| Best-known target | Debated; see below | Melanocortin receptors |
| Main research areas | Inflammatory signaling, gut-barrier models, cytokine studies | Pigmentation, immune signaling, many others |
| Evidence base | Cell and preclinical studies | Far broader and older |
The parent has the larger body of research by a wide margin. KPV's literature is narrower.
What has published research examined for KPV?
Researchers have looked at KPV in three broad areas.
- Inflammatory signaling: cell studies have examined whether KPV changes NF-κB activity. NF-κB is a protein complex that switches on many inflammation-related genes.
- Cytokine responses: cytokines are small signaling proteins that cells release during immune activity. Some studies measured how KPV altered their levels in cultured cells.
- Gut-barrier models: preclinical studies of intestinal inflammation have used KPV to look at the lining of the gut.
These are reports from laboratory models. They do not establish how KPV behaves in any other setting, and many findings still need independent replication.
Does KPV use the same receptor as α-MSH?
This is not settled. Some work proposes that KPV acts through melanocortin receptors, as its parent does. Other work suggests it enters cells through a peptide transporter called PepT1 and acts inside them. Researchers have not agreed on one mechanism, and different cell types may behave differently. We treat any single-mechanism claim with caution.
For a comparison with a different tripeptide, see GHK-Cu vs KPV: Two Tripeptides, Two Targets.
What is in the KPV 10mg vial?
Our KPV | 10mg is a lyophilized (freeze-dried) powder in a sealed laboratory vial. Our peptides are synthesized at a WHO/GMP and ISO 9001 certified laboratory in California and tested by a third party. The product is for laboratory research use only.
Lyophilized peptides are generally more stable than peptides in solution. Follow the storage guidance on the label and Certificate of Analysis. For the background, see Lyophilization Explained.
How is a tripeptide like KPV tested?
Three checks matter: identity by mass spectrometry, purity by HPLC, and the amount of peptide in the vial. Our general guide is How to Read a Peptide Certificate of Analysis. Three points are specific to KPV:
- Small mass: a tripeptide has a low molecular mass, so confirm the reported mass matches the theoretical value for Lys-Pro-Val.
- Early HPLC peak: short, polar peptides leave the column quickly. Check that the method separates the main peak from the solvent front.
- No aromatic residues: KPV has none, so detection relies on the peptide bond, usually read at a short UV wavelength. Look at the stated detection wavelength.
Compare the Certificate of Analysis for your lot with these points. Also check that it names the compound and the lot.
Frequently asked questions
What do the letters K, P and V stand for?
They are the one-letter codes for lysine, proline and valine. Written out, the sequence is Lys-Pro-Val.
Is KPV a hormone?
No. It is a fragment of a hormone, α-MSH. The fragment itself is studied as a research peptide.
Is KPV only studied in the gut?
No. Gut-barrier models are a major area, but cell studies of cytokines, immune signaling and skin and tissue models have also been published.
Is KPV the same as the KPV in BPC Wolverine + KPV?
It is the same tripeptide, sold there as part of a blend. See What the Names in BPC Wolverine + KPV Actually Mean.
Why is KPV studied instead of the full α-MSH?
Researchers describe the fragment as smaller and simpler to work with. Its size also lets them test which part of the parent carries a given activity.
How much research exists on KPV?
Less than for its parent. Most published work is in cells and preclinical models, and the findings are early.
Every lot we sell has a Certificate of Analysis you can read before you order. Questions before you buy? Our team is in Chandler, Arizona: (888) 745-1505 or our contact page.
View KPV | 10mgAll products sold by BioPure Peptides are intended strictly for in-vitro laboratory and research use only. They are not for human or animal consumption. These statements have not been evaluated by the U.S. Food and Drug Administration, and these products are not intended to diagnose, treat, cure, or prevent any disease.