Copper-Peptide Research Guide
GHK-Cu Research: Copper Binding, Matrix Signaling, and Tissue Models
GHK is a naturally occurring tripeptide that can form a complex with copper. The copper complex GHK-Cu has been studied in extracellular-matrix, skin, wound-response, and gene-expression models.
Reviewed · August 25, 2026
A Three-Amino-Acid Copper Complex
GHK consists of glycine, histidine, and lysine. Its ability to bind copper changes its chemical context and is central to how GHK-Cu is discussed in biological research.
What Researchers Measure
Published models have examined collagen and glycosaminoglycan synthesis, metalloproteinase regulation, cell migration, antioxidant response, tissue remodeling, and gene-expression patterns.
Material and Model Matter
GHK and GHK-Cu should not be treated as identical labels. Researchers should verify complex identity, copper association, purity, content, stability, and the exact model before comparing results.