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Wollenberger, L., Halling-Srensen, B

Elamin, M

Chemistry & Mechanism of Action of Copper Tripeptide (GHK-Cu) The GHK peptide consists of three amino acids, glycine, histidine, and lysine, arranged in a specific sequence that chelates Cu(II) in a square-planar coordination geometry

GHK-Cu is a naturally occurring plasma peptide Size : BPC-157 is a 15-amino acid peptide (1419.53 Da)

Unlike small-molecule drugs that are chemically stable across a wide range of conditions, peptides can hydrolyze, oxidize, and aggregate under conditions most people would consider normal, such as room temperature, moderate humidity, or standard kitchen lighting