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  4. In a protein structure, the first amino acid and the last amino acid are respectively called as

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Q. In a protein structure, the first amino acid and the last amino acid are respectively called as

Biomolecules

Solution:

In proteins, the left end represented by the first amino acid is termed as the $N$-terminal amino acid due to the presence of a free amino group. The right end represented by the last amino acid is termed as the $C$-terminal amino acid due to the presence of a free carboxyl group.