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Gopal Grandhige, MD, FACS, Board-Certified Surgeon Last Reviewed: February 28, 2026 GHK-Cu is a copper peptide complex (glycyl-histidyl-lysine combined with copper) that naturally occurs in human saliva, plasma, and urine
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What It Could Mean for You. Mayo Clinic , Accessed 15 Jan
It is funnel-shaped with 30 long in small catalases [30, 48], while in large catalases that channel is replaced by an elongated, constricted, and possibly bifurcated channel that includes the C-terminal domain of adjacent subunit [3, 30]
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