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GHK-Cu 100mg is a research-grade copper peptide compound offered in lyophilized form for laboratory and research use

Lack of sleep, dehydration and exposure to many people in confined spaces challenges the immune system

It is produced by ligation (-glutamylcysteine synthetase, EC 6.3.2.2) of the gamma-carboxyl of glutamate (E) to the amino group of cysteine (C), then terminated by glutathione synthase (EC 6.3.2.3), with a conventional cysteine-glycine (C-G) peptide bond

The LC flow was set at 0.2 ml min 1 , and the gradient was as follows: 10% A held for 2 min, 35% A at 18 min, 70% A at 22 min, 90% A at 22.1 min and held for 2.9 min, 10 % A at 25.1 min and held for 5 min

Jeong Y, Shim YS, Jo YK, Cha HJ

Moreover, the structure of EcGGT in complex with glutathione clearly illustrates the formation of a covalent bond between the OG atom of Thr391 and carbonyl carbon of -glutamyl moiety of glutathione (Okada et al., 2006)