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BIO NMDCAT Proteins
nmdcat.online June 29, 2026

The quaternary structure of a protein refers to

A. Amino acid sequence
B. Folding of one polypeptide chain
C. Association of multiple folded polypeptide subunits
✓
D. Formation of peptide bonds

📝 Explanation

Quaternary structure exists only in proteins composed of more than one polypeptide chain, such as hemoglobin.

📖 Additional Information

  • Amino acid sequence
  • Folding of one polypeptide chain
  • Association of multiple folded polypeptide subunits
  • Formation of peptide bonds

Quaternary structure exists only in proteins composed of more than one polypeptide chain, such as hemoglobin.

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