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AHK-Cu (Ala-His-Lys-Cu) is a copper-binding tripeptide complex closely related to GHK-Cu, studied in extracellular-matrix (ECM) and metalloenzyme signaling research

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Assay-Dependent Potency IC 50 values require test conditions A value of approximately 1.2 M is commonly reported for NNMT inhibition under a specified in-vitro enzyme assay using defined substrate and SAM concentrations