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Enzyme Activation Lysyl oxidase, the enzyme responsible for cross-linking collagen and elastin fibers (essential for tissue strength, elasticity, and proper matrix organization), absolutely requires copper as a cofactor - GHK-Cu enhances lysyl oxidase activity by ensuring adequate copper availability, thereby promoting proper collagen and elastin maturation and tissue structural integrity

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The benefits of NAD metabolism may be even greater

Opioid-like peptides derived from food proteins are thought to possess significant biological activity