Competitive Inhibition Definition and Explanation PDF Download
Learn Competitive Inhibition definition in college chemistry with explanation to study “What is Competitive Inhibition”. Study competitive inhibition explanation with college chemistry terms to review chemistry course for online degree programs.
Competitive Inhibition Definition:
Enzyme inhibition by molecules that bind to the active site, preventing the normal substrate from reacting is called competitive inhibition.
Cambridge International AS and A Level Chemistry by Ryan Lawrie, Roger Norris
Competitive Inhibition Explanation:
Competitive inhibition is the inhibition in which an inhibitor has a structure similar to substrate molecule. Due to similarity of structure it is selected by the enzyme binding sites. These are not able to activate the catalytic site and thus compete with the original substrate for the same binding site. They displace the substrate effectively due to higher affinity. Due to this the enzyme is inactivated and no products are formed. We can consider an example of succinic acid which is converted to Fumaric acid by the enzyme succinic dehydrogenase. In the presence of a competitive inhibitor,malonic acid,there's no reaction.
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