GHK-Cu, commonly identified as glycyl-L-histidyl-L-lysine copper complex, represents one of the most extensively discussed copper peptides within biochemical literature. Although definitive mechanistic interpretations remain under continued exploration, the peptide’s emerging scientific profile has contributed to increased interest across peptide signaling disciplines. The structural simplicity of both GHK-Cu and AHK-Cu also contributes to their appeal within biochemical research environments. To examine broader discussions related to copper peptide research and emerging biochemical applications, click here. Regenerative and protective actions of the GHK-Cu peptide in the light of the new gene data.