JEE Main Chemistry question

Secondary structure of proteins refers to:

(A)Mainly denatured proteins in structure of prosthetic group
(B)Three dimensional structure, specially the bond between amino acid residues that are distant from each other in the polypeptide chain
(C)Linear sequence of amino acid residue in the polypeptide chain
(D)Regular folding patterns of a continuous portion of the polypeptide chainCorrect

Answer: (D)

Solution

Secondary structure describes the regular, repeating local folding patterns of a continuous stretch of the polypeptide backbone — such as the -helix or -pleated sheet — stabilised by hydrogen bonding along the chain. The linear amino acid sequence itself is the primary structure, and

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Question ID VK-151068