Copper tripeptide acetate (GHK Cu acetate) Tripeptide MedChemExpress IUCr) The copper(II) binding tripeptide GHK, a valuable crystallization and phasing tag for macromolecular crystallography Buy GHK Cu Peptide 99%+ Purity GHK Cu for Research GHK Cu 50mg High Purity Research Peptide Cu(II) Binding to the Peptide Ala His His, a Chimera of the Canonical Cu(II) Binding Motifs Xxx His and Xxx Zzz His Inorganic Chemistry