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

Question

In a protein structure, the first amino acid and the last amino acid are respectively called as (A) N-terminal amino acid, C-terminal amino acid (B) C-terminal amino acid, N-terminal amino acid (C) α-amino acid, β-amino acid (D) β-amino acid, α-amino acid

Tardigrade Admin · Accepted Answer

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.

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

N-terminal amino acid, C-terminal amino acid

C-terminal amino acid, N-terminal amino acid

$α$ -amino acid, $β$ -amino acid

$β$ -amino acid, $α$ -amino acid

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.