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Question

The helical structure of proteins is stabilized by:


A
peptide bonds
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B
dipeptide bonds
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C
hydrogen bonds
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D
vander walls forces
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Solution

The correct option is C hydrogen bonds
The helical structure of proteins is stabilized by hydrogen bonds. In helical structure, the carbonyl oxygen atoms in $$C=O$$ points in one direction, towards the amide hydrogen atoms in $$NH$$ groups, 4 residues away. Together these groups form a hydrogen bond, one of the main forces of secondary structure stabilization in proteins. Hydrogen bonds are shown by dashed lines.
147444_15090_ans_eb9fa4560be8423992f869c1d9685526.png

Chemistry
NCERT
Standard XII

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