मराठी

Enzymes - Co-factors

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Estimated time: 2 minutes
CBSE: Class 12

Key Points: Enzymes - Co-factors

  • Meaning - Non-protein constituents that bind to the apoenzyme to make it catalytically active. Apoenzyme + Cofactor = active enzyme.
  • Prosthetic Groups - Tightly bound organic compounds. Example: Haem in peroxidase and catalase.
  • Co-enzymes - Temporarily associated organic compounds; many contain vitamins. Example: NAD and NADP contain vitamin Niacin.
  • Metal Ions - Form coordination bonds at the active site. Example: Zinc in Carboxypeptidase.
  • Key Distinction - Prosthetic = permanently bound | Co-enzymes = temporarily bound | Metal ions = coordination bonds.
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