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Question
Name the structure of protein in which all peptide chains are stretched out to full extension and laid side by side through intermolecular hydrogen bonds.
Name the structure of protein in which all peptide chains are stretched out to full extension and laid side by side through intermolecular hydrogen bonds.
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Solution
The correct option is B β-pleated sheet
β-pleated sheet: In this structure, all peptide chains are stretched out to a nearly maximum extension and then laid side by side that are held together by intermolecular H-bond. The polypeptide chains can link together in parallel and antiparallel sequence. Thus option b is correct.
α-helix: In this structure, a polypeptide chain forms all possible H–bonds by twisting into a right-handed screw helix.
Tertiary Structure of Proteins: It represents overall folding of the polypeptide chains i.e., further folding of the secondary structure producing a 3D structure.
β-pleated sheet: In this structure, all peptide chains are stretched out to a nearly maximum extension and then laid side by side that are held together by intermolecular H-bond. The polypeptide chains can link together in parallel and antiparallel sequence. Thus option b is correct.
α-helix: In this structure, a polypeptide chain forms all possible H–bonds by twisting into a right-handed screw helix.
Tertiary Structure of Proteins: It represents overall folding of the polypeptide chains i.e., further folding of the secondary structure producing a 3D structure.
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