ghk-cu copper coordination sites changes the conversation. pairs the Gly-His-Lys tripeptide with Cu²⁺ through chemistry. In peptide biochemistry, this makes it a useful classroom example for studying how metal-binding motifs can influence extracellular GHK-CU (50mg) – Nordsci
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![List of current GLP-1 and its analogs [36-39]](https://www.researchgate.net/publication/371322849/figure/tbl1/AS:11431281165596278@1686056417230/List-of-current-GLP-1-and-its-analogs-36-39.png)

















