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JEE Main · 2023 · 30 Jan 2023 · Shift 2 · Biomolecules

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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: 6

Solution

Complete hydrolysis sets free three glycine, two leucine and two valine residues, so the peptide is built from amino acid units joined in a single chain. The residues of a chain are tied by bonds one fewer than their number, since each unit added after the first makes one new link. A chain of seven residues therefore holds six peptide linkages.

JEE Main · 2023 · 30 Jan 2023 · Shift 2 · Integer answer

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