The tumour metabolism inhibitors GSAO and PENAO react with cysteines 57 and 257 of mitochondrial adenine nucleotide translocase
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doi: 10.3390/molecules191119066
There is only the case of the nuclear transcription factor c-Jun that, due to an unusual redox potential, could react with GSSG at relatively high ratio of GSH/GSSG = 13 (Klatt et al., 1999)
It is compatible with the vast majority of research peptides that dissolve readily at neutral or mildly acidic pH including most GLP-1 analogues, amylin analogues, and other water-soluble peptide preparations supplied by Peptides Lab UK
Glutathione levels in the body fluctuate throughout the day and are typically lowest in the morning