Definitions

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

  • noun Any of various natural or synthetic compounds containing two or more amino acids linked by the carboxyl group of one amino acid to the amino group of another.

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

  • noun biochemistry A class of organic compounds consisting of various numbers of amino acids in which the amine of one is reacted with the carboxylic acid of the next to form an amide bond.
  • noun biochemistry The peptide bond itself.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun amide combining the amino group of one amino acid with the carboxyl group of another; usually obtained by partial hydrolysis of protein

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[pept(one) + –ide.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek πεπτός ("digested").

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Examples

  • The word peptide is derived from a Greek term meaning ‘small digestibles’; a peptide also forms a type of chain, or bond.

    The Best American Poetry 2010 Amy Gerstler 2010

  • The word peptide is derived from a Greek term meaning ‘small digestibles’; a peptide also forms a type of chain, or bond.

    The Best American Poetry 2010 Amy Gerstler 2010

  • The word peptide is derived from a Greek term meaning ‘small digestibles’; a peptide also forms a type of chain, or bond.

    The Best American Poetry 2010 Amy Gerstler 2010

  • They stand for corresponding amino acids in peptide chains.

    Beckwith on ID 2008

  • They stand for corresponding amino acids in peptide chains.

    Beckwith on ID 2008

  • They stand for corresponding amino acids in peptide chains.

    Beckwith on ID 2008

  • Their work exploits the way certain peptide sequences can be made to self-assemble into mesh-like sheets of "nanofibres" when immersed in salt solutions.

    Nano-Gel Used to Stop Bleeding | Impact Lab 2006

  • We learnt that the basic biochemical principles, such as generation of high-energy intermediates involved in peptide bond formation, were preserved along evolution regardless of whether the bond is encoded genetically or not, or whether it links two amino acids, or two proteins, or an amino acid to the elongoting polypeptide chain.

    Aaron Ciechanover - Autobiography 2005

  • The signal peptide is finally cleaved and the protein is secreted out of the cell.

    The Nobel Prize in Physiology or Medicine 1999 1999

  • The growing protein chain penetrates the channel, the signal peptide is cleaved, and the completed protein is released into the lumen of the endoplasmic reticulum.

    Physiology or Medicine for 1999 - Press Release 1999

  • These include hormones, such as insulin, which increases appetite and promotes fat storage; ghrelin, the “hunger hormone”; and leptin and peptide YY, which are called “satiety hormones.”

    This Doctor Pioneered Counting Calories a Century Ago, and We’re Still Dealing With the Consequences Smithsonian Magazine 2024

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