Many modern medicines are designed as competitive inhibitors. To work this way, the drug molecule must
Correct answer: C. mimic the shape of the enzyme's natural substrate
- A. bind permanently to the enzyme by covalent bonds
- B. denature the whole protein
- C. mimic the shape of the enzyme's natural substrate
- D. block the synthesis of the enzyme
Explanation
A competitive inhibitor succeeds only if it fits the active site, so medicinal chemists build molecules shaped like the substrate. Permanent covalent binding would make the drug an irreversible inhibitor instead, a different mechanism.
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About Characteristics of Enzymes
Enzymes are globular biological catalysts that lower activation energy without being consumed, usually showing specificity for particular substrates. Questions cover active sites, enzyme substrate complexes, the lock and key and induced fit models, intracellular and extracellular action, and the effects of denaturation, while distinguishing enzymes from non biological catalysts.
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