ghk cu biolab GHK-Cu copper peptide 20 mg GHK-CU – ND BioLabs

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This is clinically significant for drugs with narrow therapeutic windows (thyroid hormone, anticoagulants, immunosuppressants)

GHK binds copper because of a specific combination of functional groups that together form a high-affinity copper-coordination site: the N-terminal amine donates one nitrogen ligand, the histidine imidazole donates a second nitrogen ligand, and the deprotonated amide nitrogen of the Gly-His peptide bond donates a third nitrogen ligand