JIPMER 2011
- Exam
- JIPMER
- Year
- 2011
- Subject
- Botany
- Chapter
- Biomolecules (B)
JIPMER 2011 · Botany · Biomolecules (B)
An example of competitive inhibition of an enzyme is the inhibition...
An example of competitive inhibition of an enzyme is the inhibition of
Options
- Asuccinic dehydrogenase by malonic acid
- Bcytochrome oxidase by cyanide
- Chexokinse by glucose-6-phosphate
- Dcarbonic anhydrase by carbon dioxide
Correct answer
A. succinic dehydrogenase by malonic acid
Step-by-step solution
Classical example of competitive inhibition is reduction of activity of succinate dehydrogenase by malonate, oxaloacetate and other anions. In competitive inhibition, a competitive inhibitor which has the resemblance with substrate molecule, competes with the substrate for the active site of an enzyme. While the inhibitor (I) occupies the active site, it prevents binding of the substrate to the enzyme.