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

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Solution

$α -$ helix is a secondary structure of proteins formed by twisting of polypeptide chain to right handed screw like structure. Hydrogen bonds formed between -NH- group of amino acids in one turn with the >C=O groups of amino acids belonging to adjacent turn is responsible for making the $α -$ helix structure stable.

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