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
L-glutamic acid-L-tyrosine copolymer [ poly(E,Y)1-4,poly(Glu(50)Tyr(50)),poly(Glu(80)Tyr(20)),poly(Glu-Tyr)(4:1),poly(L-glutamyl-L-tyrosine) ] synthetic polypeptide which has suppressive effect on delayed-type hypersensitivity