Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry Ghk cu and skin peptides (topical) Skin regeneration and wrinkle reduction Longevity Protocols How GHK Peptide Works Signaling GHK acts as a switch for skin repair: Interacts with adenosine receptors reduces inflammation Activates MAPK ERK, PI3K Akt, TGF pathways Stimulates fibroblasts & keratinocytes boosts collagen, elastin CopperInduced Supramolecular Peptide Assemblies for MultiPathway Cell Death and Tumor Inhibition Zhang 2024 Angewandte Chemie International Edition Wiley Online Library The copper(II) binding tripeptide GHK, a valuable crystallization and phasing tag for macromolecular crystallography