Glutathione is a major antioxidant in all forms of life and an indicator of cellular oxidative stress. Reduction by the GSR enzyme utilizes NADPH as an electron donor. In a reduced form, glutathione is metabolized in multiple ways leading to the biosynthesis of mercapturonate, glutamate, glycine, cysteine and other amino acids. This pathway was inferred from Homo sapiens pathway [http://www.wikipathways.org/index.php?title=Pathway:WP100&oldid=20893 WP100(r20893)] with a 51% conversion rate. aka gamma-GluAA(Cys) according to PMID:34492635 (5-L-Glutamyl)-L-amino acid b5e b5e Former label: 2.3.2.4 b5e b5e b5e b5e b5e (5-L-Glutamyl)-L-amino acid b5e b5e b5e b5e b5e b5e b5e b5e b5e b5e b5e 34492635 PubMed Glutathione is an aging-related metabolic signature in the mouse kidney. Aging (Albany NY) 2021 Ahn E Lee J Han J Lee SM Kwon KS Hwang GS glutathione metabolic pathway PW:0000134 Pathway Ontology