Question 21.5: Draw the structures of the amino acids formed by hydrolysis ...

General, organic, & biological chemistry

Draw the structures of the amino acids formed by hydrolysis of the neuropeptide leu-enkephalin (Section 21.5).

Analysis

Locate each amide bond in the protein or peptide backbone. To draw the hydrolysis products, break each amide bond by adding the elements of $\mathrm{H}_2 \mathrm{O}$ to form a carboxylate anion ( $-\mathrm{COO}^{-}$ ) in one amino acid and an ammonium cation ( $-\mathrm{NH}_3{ }^{+}$ ) in the other.

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