JEE Main · 2023 · Shift-IImediumBIO-068

The - Helix and - Pleated sheet structures of protein are associated with its:

Biomolecules · Class 12 · JEE Main Previous Year Question

Question

The α\alpha- Helix and β\beta - Pleated sheet structures of protein are associated with its:

Options
  1. a

    quaternary structure

  2. b

    primary structure

  3. c

    secondary structure

  4. d

    tertiary structure

Correct Answerc

secondary structure

Detailed Solution

Step 1: Protein Hierarchy — Primary structure is the sequence of amino acids. Secondary structure refers to local folded shapes like helices and sheets.

Step 2: Hydrogen Bondingα\alpha-helices and β\beta-pleated sheets are stabilized by hydrogen bonds between the backbone C=OC=O and NHN-H groups.

Step 3: Result — These specific structural motifs define the secondary level of protein organization. Correct option is (c).

Remember: Tertiary structure involves the further folding of these secondary elements into a 3D globuar or fibrous shape.

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