Gly-Glu-Gly is a tripeptide, which can be used to study the protein structure, and the behavior of individual amino acid residues during folding[1].
Definition
ChEBI: Gly-Glu-Gly is an oligopeptide.
References
[1] Hagarman A, et al., Intrinsic propensities of amino acid residues in GxG peptides inferred from amide I' band profiles and NMR scalar coupling constants. J Am Chem Soc. 2010 Jan 20;132(2):540-51. DOI:10.1021/ja9058052