from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A peptide containing three amino acids.

from The Century Dictionary.

  • noun A condensation-product resulting from the union of three amino-acid radicals, as alanyl-leueyl-glycin. Products of this order are possibly formed during proteolytic digestion. See digestion products.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun chemistry An organic compound formed from three amino acids joined by peptide bonds.


Sorry, no etymologies found.


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  • Glutathione is a tripeptide, a molecule composed of three amino acids, and is the most abundant and important antioxidant protective system in our cells.

    Forever Young M.D. Nicholas Perricone 2010

  • This transdermal delivery system allows the mitochondria to receive increased levels of this protective tripeptide.

    Forever Young M.D. Nicholas Perricone 2010

  • The fluorescent moiety is an imidazolone ring structure that is formed by the posttranslational cyclization of a tripeptide, ser65-tyr66-gly67.

    NIH Public Access - Seeing Circuits Assemble William Harryman 2009

  • Syn-Ake, as the compound is called, is made from a synthetic tripeptide that copies the effect of a peptide found in the venom of the Temple Viper, found in the Snake Temple of Penang, Malaysia.

    Secret Ingredients In Skincare Products 2009

  • Denaturation of green fluorescent protein destroys fluorescence, as might be expected, and mutations to residues surrounding the tripeptide fluorophore can dramatically alter the fluorescence properties.

    Archive 2005-10-01 2005

  • The second important feature of green fluorescent protein is that fluorescence is highly dependent on the molecular structure surrounding the tripeptide fluorophore.

    Archive 2005-10-01 2005

  • If one of these protecting groups in the dipeptide is later selectively removed and reaction with a third amino acid containing one protected group carried out, a tripeptide is formed.

    Press Release: The 1984 Nobel Prize in Chemistry 1984

  • Synthesis of a tripeptide using conventional methodology.

    Press Release: The 1984 Nobel Prize in Chemistry 1984

  • Synthesis of a tripeptide using Merrifield´s methology.

    Press Release: The 1984 Nobel Prize in Chemistry 1984

  • This dipeptide is then combined with a third modified amino acid to give a tripeptide and so on.

    The Nobel Prize in Chemistry 1984 - Presentation Speech 1984


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