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NEETChemistryBiomolecules

α-Helix is a secondary structure of proteins formed by twisting of polypeptide chains into right-handed screw-like structures. Which type of interactions are responsible for making the α-helix structure stable?

Options

  1. AIonic interactions between positively and negatively charged amino acid side chains.
  2. BIn α-helix,a polypeptide chain is stabilized by the formation of hydrogen bonds between (-NH-) group of amino
  3. CVan der Waals interactions between nonpolar amino acid side chains.
  4. DCovalent disulphide bonds between cysteine residues in the polypeptide chain.

Correct answer

B. In α-helix,a polypeptide chain is stabilized by the formation of hydrogen bonds between (-NH-) group of amino

Step-by-step solution

Correct Option is : (B) In α-helix,a polypeptide chain is stabilized by the formation of hydrogen bonds between (-NH-) group of amino acids in one turn with the (>C=O) groups of amino acids belonging to adjacent turn

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