glutathione react with sulfinic cysteine Acid - an overview S-Glutathionylation: From Molecular Mechanisms to

The hydrophobic side chains of Leu151 is buried into a hydrophobic pocket, therefore the introduction of a bulky Arg side chain at this position would likely induce severe perturbations to the stability of the GT1 domain

Glutathione has been shown to tilt the scales in favor of pheomelanin production

doi:10.1016/j.actbio.2019.07.035 110

This ROS-triggered cascade release strategy simultaneously boosts immune stimulation ( via CpG) and reverses a specific immune evasion mechanism (by rescuing MHC I), effectively re-enabling cytotoxic T cells to recognize and kill tumor cells

GHK-Cu suppresses inflammatory cytokines, including TNF-alpha and interleukins that contribute to chronic skin inflammation