glutamyl transpeptidase glutathione Gamma-glutamyl transferase and cardiovascular disease Glutamyltranspeptidase is used in the food industry to improve the umami taste of soy sauce. Physiological role of gamma-glutamyl transpeptidase:

Org Biomol Chem 19:39834001 Heitmann JS, Bilich T, Tandler C, Nelde A, Maringer Y, Marconato M, Reusch J, Jger S, Denk M et al (2022) A COVID-19 peptide vaccine for the induction of SARS-CoV-2 T cell immunity

(2017), Clinical, Cosmetic and Investigational Dermatology , reviewed both topical and oral glutathione studies for skin lightening, concluding that effects are generally modest and reversible upon discontinuation

10.1016/j.nantod.2025.102900 137 LiangJ.LiuP.YangX.LiuL.ZhangY.WangQ.et al (2023)

Targeting EZH1/2 to Restore Chemosensitivity in Dormant Myeloid Leukemia Stem Cells

The G-S-S-G on the right, is the oxidized form of glutathione with a di-sulfide bond (S-S)

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