Question

After a polypeptide chain has been synthesized, certain amino acids in the peptide may become modified. For each modified amino acid, identify the standard amino acid from which it is derived. Enter the unabbreviated name of the standard amino acid.

Answer 1

Lysine

Step-by-step explanation:

Lysine is a unabbreviated name of amino acid. It is used in biosynthesis of proteins. It contains
`\alpha`-amino group and
`\alpha`-carboxylic acid group which has formula is C6H14N2O2. Lysine is also considered as building block of amino acid. It is used for treating cold sores and can be applied directly to the skin.