L-gamma-Glutamyl-L-threonine (gamma-Glutamylthreonine, H-gamma-Glu-Thr-OH, gamma-Glu-Thr) is a dipeptide obtained through the formal condensation of the L-glutamic acid side chain carboxyl group and the L-threonine amino group. L-gamma-Glutamyl-L-threonine is present in high concentrations in human urine and exhibits antibacterial activity against Gram-negative bacterial. L-gamma-Glutamyl-L-threonine is also a flavor compound. Gamma-Glutamylthreonine is a metabolite catalyzed by gamma-glutamyl transpeptidase and is associated with immune regulation. Gamma-Glutamylthreonine can be used in research on inflammation and bacterial infections[1][2].