Definition: Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are linear polypeptides that are normally synthesized on RIBOSOMES.
general; prefer specifics; fewer than 13 amino acids
protein kinase inhibitor peptide [ PKIP ] 18 amino acid residues given in first source; corresponds to the inhibitory domain of the heat-stable protein kinase inhibitor