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nmdcat.online June 27, 2026

The specific three-dimensional shape of an antibody’s antigen-binding site is an example of the relationship between a protein’s structure and its function, primarily determined at the

A. Primary level
B. Secondary level
C. Tertiary level
✓
D. Primary, secondary, and tertiary levels

📝 Explanation

While all levels contribute, the precise 3D shape of an antigen-binding pocket is a feature of the protein's tertiary structure. It is formed by the folding and precise juxtaposition of R-groups from different parts of a single polypeptide chain (in heavy and light chains).

📖 Additional Information

  • Primary level
  • Secondary level
  • Tertiary level
  • Primary, secondary, and tertiary levels

While all levels contribute, the precise 3D shape of an antigen-binding pocket is a feature of the protein's tertiary structure. It is formed by the folding and precise juxtaposition of R-groups from different parts of a single polypeptide chain (in heavy and light chains).

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