Question

A short peptide on complete hydrolysis produces 3 moles of glycine (G), two moles of leucine $( L )$ and two moles of valine $( V )$ per mole of peptide The number of peptide linkages in it are ______

Answer 1

Correct Answer: 6

To determine the number of peptide linkages in the given peptide, we first need to understand the peptide's structure. A peptide linkage, also known as a peptide bond, is formed between two amino acids when the carboxyl group of one amino acid reacts with the amino group of another, releasing a molecule of water. For a peptide with n amino acids, there are n - 1 peptide linkages.

According to the problem, on complete hydrolysis, the peptide produces 3 moles of glycine (G), 2 moles of leucine (L), and 2 moles of valine (V) per mole of peptide. This indicates that the peptide is composed of 3 + 2 + 2 = 7 amino acids in total.

Hence, the number of peptide linkages is given by:

Number of linkages=Total number of amino acids-1=7-1=6

This matches the expected range of 6,6, confirming our solution is correct.