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
exenatide [ AC 2993,AC 2993 LAR,Byetta,Ex4 peptide,bydureon,exendin 4,exendin-4 ] amino acid sequence given in first source; isolated from the venom of the lizard Heloderma suspectum; increases pancreatic acinar cAMP; identical to exendin-3 except that Gly(2)-Glu(3) replaces Ser(2)