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Question: Answered & Verified by Expert
What is the difference between α-helix and β-pleated sheet structure of proteins?
ChemistryBiomoleculesNEET
Options:
  • A α-helix has a linear, helical arrangement, while β-pleated sheet has a folded, sheet-like arrangement.
  • B In the α-helix structure of proteins, the peptide chains are coiled to form a right-handed helix involving hydrogen bonding, while β-pleated sheet is composed of peptide chains lying side by side joined together by intermolecular hydrogen bonding.
  • C α-helix has a zigzag arrangement of amino acids, while β-pleated sheet has a spiral arrangement.
  • D α-helix is more stable than β-pleated sheet due to its coiled structure.
Solution:
2843 Upvotes Verified Answer
The correct answer is: In the α-helix structure of proteins, the peptide chains are coiled to form a right-handed helix involving hydrogen bonding, while β-pleated sheet is composed of peptide chains lying side by side joined together by intermolecular hydrogen bonding.
Correct Option is : (B)
In the α-helix structure of proteins, the peptide chains are coiled to form a right-handed helix involving hydrogen bonding, while β-pleated sheet is composed of peptide chains lying side by side joined together by intermolecular hydrogen bonding.

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