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Question

Proteins are found to have two different types of secondary structures viz. αhelix and βpleated sheet structure. αhelix structure of protein is stabilised by:


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Solution

Analysing the options

Option-(A):

Peptide bonds are present between the amino acids.

Option-(B):

Other interactions like van der Waals forces or dipole-dipole interactions do not help in the stabilization of αhelix structure of protein.

Option-(C):

Proteins are found to have two different types of secondary structures viz. αhelix and βpleated sheet structure. The αhelix structure of protein is stabilized by hydrogen bonds. These hydrogen bonds are formed between the NH group of an amino acid residue to the C=O group of another amino acid residue.




So, the correct answer is option (C).



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