Not too big. Not too small. Because of their intermediate size, macrocyclic peptides combine the potency and precise targeting of an antibody or biologic therapy with the stability and ease of administration of a Intermediate Cu(II) Thiolate Species in the Reduction of Cu(II)GHK by Glutathione: A Handy Chelate for Biological Cu(II) Reduction Inorganic Chemistry Identification, characterization, and structure activity relationship of the ASIC3 selective peptide WRPRFa Communications Chemistry Evaluating the stability and safety of GHK Cu encapsulated in an Download Scientific Diagram