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.
- Among the amino acids of the peptide, the most dramatic change was the Phe residue.
- 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.
Early 20th century: from German Peptid, back-formation from Polypeptid 'polypeptide'.
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