What causes competitive inhibition?
Competitive inhibition is caused by a reversible inhibitor(competitive one) which is selected by binding site of enzyme but can't activate the catalytic site.
Sometime a compound has the same structure to that of a normal substrate and fits at the binding portion of the active site. Thus in this way the enzyme can't be available to a normal substrate.
So, due to structural similarity with a normal substrate, a competitive inhibitor is selected by the binding site but is not able to activate the catalytic site. As it occupies the binding site, the binding site remains unavailable for a normal substrate. So, there is not any kind of product formation. This is known as competitive inhibition.
Example:
Malonic acid has structural similarity with succinic acid. Succinic acid is specific substrate for succinic dehydrogenase(enzyme). But in some cases, malonic acid fits in binding site of succinic dehydrogenase as a competitive inhibitor but is not able to activate the catalytic site so products are not formed.
Active site is divided into two sites:
Binding site : This site holds proper substrate and fits it as enzyme-substrate or ES complex.
Catalytic site : This part of active site transforms the substrate into products which means it is vital for catalytic activity of enzyme.
Hope it helps...
By signing up, you agree to our Terms of Service and Privacy Policy
Competitive inhibition occurs when a molecule, known as the inhibitor, competes with the substrate for binding to the active site of an enzyme. This occurs because the inhibitor is structurally similar to the substrate and can fit into the active site. As a result, the inhibitor blocks the substrate from binding to the enzyme, reducing the enzyme's ability to catalyze the reaction.
By signing up, you agree to our Terms of Service and Privacy Policy
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.
- Describe enzymes and its function. What type molecule they are, how they affect chemical reactions, and what conditions can affect enzyme activity?
- How do enzymes function in biological systems?
- What is the active site of an enzyme?
- How does ph affect enzyme activity?
- Why are enzymes specific to certain substrates?
![Answer Background](/cdn/public/images/tutorgpt/ai-tutor/answer-ad-bg.png)
- 98% accuracy study help
- Covers math, physics, chemistry, biology, and more
- Step-by-step, in-depth guides
- Readily available 24/7