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JEE Main · 2022 · 24 Jun 2022 · Shift 2 · Biomolecules

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In alanylglycylleucylalanylvaline, the number of peptide linkages is ____.

Answer: 4

Solution

The compound alanylglycylleucylalanylvaline is a pentapeptide (contains 5 amino acid residues):
  1. Alanyl
  2. Glycyl
  3. Leucyl
  4. Alanyl
  5. Valine

The number of peptide linkages in a peptide chain = (number of amino acids) - 1

Number of peptide linkages = 5 - 1 = 4

Each peptide bond () connects two adjacent amino acids.

JEE Main · 2022 · 24 Jun 2022 · Shift 2 · Integer answer

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