The FOXO4 transcription factor, which usually helps cells repair themselves or undergo apoptosis when damaged, gets sequestered by p53 in senescent cells
The enzyme -glutamyl transpeptidase (GGT), present in the stomach and intestines, rapidly cleaves the tripeptide back into its constituent amino acids before it can ever reach systemic circulation
RRM1 (sc-11733, 1:1000), and RRM2 (sc-10846, 1:1000) from Santa Cruz
A study from Japan concluded that taking glutathione by mouth reduced triglycerides, non-esterified fatty acids, and ferritin levels, meaning it could help people suffering from nonalcoholic fatty liver disease (via BMC Gastroenterology)
Transl Cancer Res
688,691,802 These GTPases (G-proteins) use the energy of GTP hydrolysis to facilitate metal transfer or another step in the metalloenzyme maturation cycle, shown specifically for a metal transfer reaction (Figure 35B)