In the primary structure of protein

Question

In the primary structure of protein (A) Left end represents → 1st amino acid (C-terminal amino acid) (B) Right end represents → Last amino acid (N terminal amino acid) (C) Left end represents → 1st amino acid (N-terminal amino acid) (D) Right end represents → 1st amino acid (C-terminal amino acid)

Tardigrade Admin · Accepted Answer

The sequence of amino acid, the positional information in protein, which is first amino acid and which is second and so on is called the primary structure. Amino acids are joined by peptide bond formed between COOH group of first amino acid and N H2 group of second amino acid. Thus the first amino acid is left end, has free N H2 group known as N Terminal amino acid and last amino acid is right end has free COOH group thus known as C Terminal amino acid.

Q. In the primary structure of protein

Left end represents → 1st amino acid (C-terminal amino acid)

Right end represents → Last amino acid (N terminal amino acid)

Left end represents → 1st amino acid (N-terminal amino acid)

Right end represents → 1st amino acid (C-terminal amino acid)