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  4. Proteins are found to have two different types of secondary structures viz. α-helix and β-pleated sheet structure, α-helix structure of protein is stabilised by

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Q. Proteins are found to have two different types of secondary structures viz. $\alpha$-helix and $\beta$-pleated sheet structure, $\alpha$-helix structure of protein is stabilised by

Biomolecules

Solution:

$\alpha$-Helix structure of protein is stabilised by hydrogen bonds between $—NH—$ group of one amino acid residue and the image group of another amino acid residue.