Chem. [Named by Fischer, 1902, f. TRI- 5 + PEPT(ONE + -IDE.] A compound containing the residues of three amino-acids united by the joining of NH in one residue to CO in another; e.g., alanyl-glycyl-glycine, NH2.CH(CH3).CO – NH.CH2.CO – NH.CH2.CO.OH, is a tripeptide formed from alanine, NH2.CH(CH3).COOH, and two glycine molecules, NH2.CH2.CO.OH.
1903. Jrnl. Chem. Soc., LXXXIV. I. 799. The ethyl ester is very easily formed when the tripeptide is acted on by alcoholic hydrochloric acid.
1908. Plimmer, Chem. Const. Proteins, II. 23. Carbethoxyl-glycyl-glycyl-leucine ester … was the first known representative of a tripeptide.
