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JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Biomolecules

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Stability of -Helix structure of proteins depends upon
  1. (A)dipolar interaction
  2. (B)H-bonding interaction✓ Correct
  3. (C)van der Waals forces
  4. (D)-stacking interaction

Answer: (B)

Solution

The -helix is a secondary structure of proteins stabilized primarily by intramolecular hydrogen bonding. These hydrogen bonds form between the carbonyl oxygen () of one amino acid residue and the amide hydrogen () of another amino acid residue four positions ahead in the polypeptide chain. This regular pattern of hydrogen bonding gives the -helix its characteristic helical structure and stability.

JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Single correct option

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