Tripeptide
Definition
A peptide made from three amino-acid residues joined by peptide bonds. The name specifies chain length, not a particular biological effect.
By PurePeptideHub Editorial Team · Updated . Educational source review; independent clinical review pending.
A concrete sequence example
Gly-His-Lys, abbreviated GHK, is a tripeptide. The sequence identifies glycine, histidine and lysine in that order. Adding a coordinated copper ion produces a complex commonly called GHK-Cu; that extra chemical detail matters when comparing experiments.
References: [1]
How to distinguish evidence
A published GHK-Cu experiment examined connective-tissue accumulation in rat wound chambers. That is a specific model using a specific complex. It cannot be read as proof that every three-residue peptide improves skin, or that a cosmetic formulation has the same effect as the experimental preparation.
What the name leaves out
Tripeptide does not state residue order, terminal modifications, formulation or purity. Those details belong in the molecular description and analytical documentation. For a product claim, look for evidence on the actual ingredient and formulation rather than evidence on an unrelated tripeptide.