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GHK-Cu GHK-Cu (auch Kupfer-Tripeptid-1 ) ist ein natrlich vorkommender Kupfer-Peptid-Komplex aus dem Tripeptid Glycyl-L-Histidyl-L-Lysin (GHK) , das ein zweiwertiges Kupferion (Cu) bindet

(2004) Proc Natl Acad Sci U S A 101 : 13163 PubMed: 15333749 Search on PubMedSearch on PubMed Central DOI: Primary Citation Related Structures: 1USB PubMed Abstract: A strategy for rational enzyme design is reported and illustrated by the engineering of a protein catalyst for thiol-ester hydrolysis

Growth hormone optimization benefits both sexes, and the peptide doesn't affect sex hormones in ways that create gender-specific concerns

But their experience is most likely due to the placebo effect instead of the peptides themselves: Research linking GH supplements with better sleep shows it helps only in the case of people with a true GH deficiency

Sources : Brazil nuts, seafood, eggs, and whole grains