One of the mysteries of the English language finally explained.
A compound consisting of two or more amino acids linked in a chain, the carboxyl group of each acid being joined to the amino group of the next by a bond of the type OCNH.
- ‘These peptides are composed of amino acids, but are much smaller than proteins.’
- ‘If there are only two amino acids then the peptide is a dipeptide.’
- ‘The peptide contains complementary amino acid sequences, with alternating positive and negative charges.’
- ‘Transport of peptides and amino acids has been demonstrated in scutella isolated from barley, wheat, rice, and maize.’
- ‘Among the amino acids of the peptide, the most dramatic change was the Phe residue.’
Early 20th century: from German Peptid, back-formation from Polypeptid ‘polypeptide’.
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