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The three peptide bonds that are derived from the three amino acids are called tripeptides. A few examples oftripeptides are glutathione, Eisenin, GHK-Cu, etc.

The building blocks responsible for the formation of proteins are called amino acids.The only residue that remains in the body after the digestion of food is amino acids.

The conformation of the first tripeptide is s-trans.In this conformation, the C-N bond has two carbon atoms that are oriented on the opposite side. The structure is given below.

Structure of s-trans

The conformation of the second tripeptide is s-cis.In this conformation, the C-N bond has two carbon atoms that are oriented on the same side. The structure is given below.

Structure of s-cis

The two structures differ only by the orientation of the two carbon atoms along with the C-N bond.