Cosmetic · Synthetic tyrosinase-inhibitory peptide
Decapeptide-12
Also known as —
Synthetic decapeptide studied in tyrosinase assays and pigment-cell models to explore enzymatic regulation of melanin synthesis.
- Length
- 10 amino acids
- Half-life
- Not well characterised
- Mechanism
- Decapeptide-12 has been reported to inhibit tyrosinase activity in experimental assays, affecting an enzymatic step in melanin synthesis. Tyrosinase is an enzyme target rather than a receptor, and a definitive molecular binding mode is not established.
- Studied in
- Cell-free tyrosinase assays and pigment-producing cell cultures examine enzyme inhibition, melanin content and assay selectivity.
About Decapeptide-12
Decapeptide-12 is commonly described by the sequence Tyr-Arg-Ser-Arg-Lys-Tyr-Ser-Ser-Trp-Tyr, abbreviated YRSRKYSSWY. It is a synthetic research peptide associated with investigations of tyrosinase inhibition, rather than a recognised endogenous hormone or receptor ligand. Aromatic and basic residues dominate its sequence, but composition alone does not establish its binding mechanism. A supplier's sequence declaration and analytical data should distinguish the intended material from other ten-residue peptides.
Tyrosinase catalyses oxidation reactions involved in melanin synthesis, making it a practical target for biochemical screening. Interpretation requires care because mushroom tyrosinase and mammalian tyrosinase differ in their properties and experimental context. Reduced assay signal can also reflect optical interference, substrate interactions or compromised cell viability rather than selective enzyme inhibition. Parallel enzyme, pigment and viability measurements therefore provide a stronger experimental assessment than a single absorbance endpoint.
Laboratory notes
- Verify the YRSRKYSSWY sequence and terminal modifications against the certificate of analysis before comparing published experiments.
- Include peptide-only blanks in absorbance-based assays and consider oxidation of aromatic residues during sample handling.
- Record the tyrosinase source and substrate, and pair cellular pigment measurements with viability and cell-number controls.
Storage and reconstitution basics: storage guide.
Questions about Decapeptide-12
Is tyrosinase a receptor target?
No. Tyrosinase is a copper-containing oxidoreductase; the reported research activity concerns enzyme inhibition rather than receptor agonism.
Can mushroom tyrosinase results establish activity against mammalian tyrosinase?
Not by themselves. Enzyme-source differences mean findings should be checked in a relevant mammalian enzyme or cellular system.
Why measure cell viability alongside pigment content?
Lower pigment content can result from fewer viable cells rather than a specific change in melanin synthesis.
Is Decapeptide-12 for human use?
No. It is supplied strictly for in-vitro laboratory research and is not for human or animal consumption.
Related research peptides
All products are sold for laboratory research use only. Not for human consumption, not a medicine, not for diagnosing, treating or preventing any condition.