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Cbz-Gly-Pro-Ser(OtBu)-Ser(OtBu)-Gly-OH is a protected pentapeptide used in peptide synthesis. The sequence includes glycine (Gly), proline (Pro), and two serine (Ser) residues, with the C-terminus glycine being free, denoted by -OH, allowing for further coupling or modifications. The Cbz (Carbobenzyloxy) group protects the N-terminus of the glycine residue, while the OtBu (tert-butyl) groups protect the hydroxyl groups of the serine residues, preventing unwanted reactions during synthesis. This peptide sequence is designed to be incorporated into larger peptides or proteins, with the protective groups ensuring controlled reactivity and stability throughout the synthesis process.
