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While most of the cysteine for glutathione was derived from exogenous source in nutrient replete culture, serine-derived cysteine may become more important under nutrient-limiting conditions

[DOI] [PMC free article] [PubMed] [Google Scholar] 124.Berman S.B., Zigmond M.J., Hastings T.G

The resulting isomers, the 6-glutathionyl-quercetin adduct and 8-glutathionyl-quercetin adduct, are able to isomerize spontaneously

In CC531, a colon cancer cell line, GT was upregulated in a time and dose-dependent manner to irradiation

However, elevated MMA and homocysteine concentrations may persist in patients with cobalamin concentrations between 200 and 350 pg/mL