KPV

KPV is the shortest molecule in this part of the catalogue: three residues — lysine, proline, valine — corresponding to the C-terminal end of α-melanocyte-stimulating hormone. The parent hormone is a thirteen-residue peptide; KPV is the tail of it, made synthetically as a standalone sequence.

Because it carries that C-terminal fragment without the receptor-binding regions of the full hormone, KPV is used in the literature as a way to isolate one arm of α-MSH biology from the pigmentation signalling the whole molecule drives. It ships lyophilised in a sealed vial and is reconstituted in the laboratory with bacteriostatic water.

KPV appears in preclinical work concerned with inflammatory signalling, generally in cell culture and rodent models.

Areas of study:

• NF-κB pathway activity and nuclear translocation in cultured cells
• Pro-inflammatory cytokine expression in stimulated cell lines
• Experimental colitis models in rodents, examining mucosal inflammation endpoints
• Antimicrobial activity reported for the α-MSH C-terminal sequence against certain bacterial and fungal strains
• Uptake by intestinal epithelial peptide transporters, a transport question rather than an outcome question

Each of these describes what researchers have looked at. KPV is supplied strictly as a laboratory material and has no approved application in humans.