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Biomolecules question

2022 · 24 Jun · Shift 2 · Q21
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Biomolecules question

2022 · 24 Jun · Shift 2 · Q21

JEE MainChemistryBiomoleculesNumerical+4 / −1
In alanylglycyl leucyl alanyl valine, the number of peptide linkages is ‾\underline{\hspace{2cm}}​.
Numerical answer
View written solutionFree

Correct answer: 4

  1. The peptide given is: alanylglycyl leucyl alanyl valine\text{alanylglycyl leucyl alanyl valine}alanylglycyl leucyl alanyl valine

  2. Count the number of amino acid residues present:

    • Alanine
    • Glycine
    • Leucine
    • Alanine
    • Valine

    So, total amino acids =5= 5=5.

  3. In a peptide chain, if there are nnn amino acids, then the number of peptide linkages is: n−1n-1n−1

  4. Therefore, 5−1=45-1=45−1=4

  5. Hence, the number of peptide linkages is: 4\boxed{4}4​

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