Research comparison
GHK-Cu vs AHK-Cu in ECM Research
GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) and AHK-Cu (alanyl-L-histidyl-L-lysine copper complex) are copper-chelating tripeptides used in ECM and fibroblast signalling research with overlapping but not identical gene-expression profiles.
Short answer
GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) and AHK-Cu (alanyl-L-histidyl-L-lysine copper complex) are copper-chelating tripeptides used in ECM and fibroblast signalling research with overlapping but not identical gene-expression profiles.
Research-context summary: Choose GHK-Cu for broad ECM/fibroblast literature alignment; choose AHK-Cu when the experimental design follows hair-follicle or dermal papilla models. Verify copper content and peptide identity on each lot COA.
Use limitation: HALO comparison pages are for research context only; both materials are RUO and not for human or veterinary use.
| GHK-Cu | AHK-Cu | |
|---|---|---|
| Sequence | Gly-His-Lys + Cu²⁺ | Ala-His-Lys + Cu²⁺ |
| Primary research focus | Collagen, elastin, MMP modulation in fibroblasts | Hair follicle / dermal papilla signalling models |
| Copper role | Cofactor for lysyl oxidase and redox enzymes | Similar copper delivery in cell culture |
| Format (HALO) | Lyophilized powder | Lyophilized powder |
| Documentation | COA every batch, HPLC + identity | COA every batch, HPLC + identity |
ECM research context
Copper peptides are studied as laboratory tool compounds that modulate extracellular matrix gene expression in fibroblast and keratinocyte cultures. Research examines collagen synthesis markers, MMP/TIMP balance, and copper-dependent enzyme activity — not cosmetic or human treatment outcomes.
See also: BPC-157 vs GHK-Cu for connective-tissue pathway comparisons.
Research use only. Both compounds are sold by HALO for in vitro and qualified laboratory research only. Not for human or veterinary use, diagnosis, or treatment.