JEE Main Chemistry question

[UP SEE 2007, Manipal 2007] The helical structure of protein is stabilized by

(A)Dipeptide bonds
(B)Hydrogen bondsCorrect
(C)Ether bonds
(D)Peptide bonds

Answer: (B)

Solution

The α-helix is held in its coiled conformation by a regular repeating pattern of hydrogen bonds between the N–H of one peptide unit and the C=O of another peptide unit three residues further along the same chain. Ether bonds play no role in protein structure, and

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Question ID VK-150684