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Additionally, copper ions in GHK-Cu can catalyze oxidation of certain peptides (such as those containing cysteine residues), leading to cross-reactivity and degradation
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doi: 10.1016/0378-1119(95)00795-4
Nerinetide (NA-1) is a polypeptide that interferes with postsynaptic density protein 95 (PSD-95) and reduces the interaction between PSD-95 and neuronal nitric oxide synthase, thereby reducing nitric oxide radical production and its mediated cell death [59]
Angiotensin-converting enzyme 2 metabolizes and partially inactivates Pyr-Apelin-13 and Apelin-17: physiological effects in the cardiovascular system
