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nmdcat.online June 27, 2026

Regarding the action of lysozyme, an antibacterial enzyme, its mode of action involves the

A. Hydrolysis of peptide cross-links in bacterial proteins
B. Inhibition of bacterial DNA replication
C. Hydrolysis of specific glycosidic bonds in bacterial cell wall peptidoglycan
✓
D. Denaturation of lipid-based toxins on the bacterial surface

📝 Explanation

Lysozyme specifically targets the β-1,4 glycosidic bond between N-acetylmuramic acid and N-acetylglucosamine in the peptidoglycan layer of bacterial cell walls. This bond cleavage weakens the cell wall and causes bacterial lysis.

📖 Additional Information

  • Hydrolysis of peptide cross-links in bacterial proteins
  • Inhibition of bacterial DNA replication
  • Hydrolysis of specific glycosidic bonds in bacterial cell wall peptidoglycan
  • Denaturation of lipid-based toxins on the bacterial surface

Lysozyme specifically targets the β-1,4 glycosidic bond between N-acetylmuramic acid and N-acetylglucosamine in the peptidoglycan layer of bacterial cell walls. This bond cleavage weakens the cell wall and causes bacterial lysis.

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