Glu-Gly-OH is commonly used in biochemical research as a dipeptide model to study enzyme activity, particularly peptidases and proteases, which are involved in protein digestion and processing. It serves as a substrate to investigate the specificity and kinetics of these enzymes. Additionally, it is utilized in peptide synthesis as a building block for creating more complex peptides and proteins. In the field of nutrition, it can be explored for its potential role in dietary supplements or as a component in enteral nutrition formulations due to its peptide nature, which may enhance absorption. Its applications also extend to studying cellular signaling pathways and peptide interactions in biological systems.