Question
What is feedback regulation of enzyme activity? Explain its different types.
Answer :
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Feedback regulation of enzyme activity is a control mechanism by which the end product of a metabolic pathway regulates the activity of an enzyme involved earlier in that pathway. This type of regulation ensures that cellular metabolism remains balanced and efficient by preventing the unnecessary accumulation of end products and conserving energy and resources. When sufficient amounts of the final product are present, it sends a signal back to inhibit its own synthesis, whereas a decrease in the product concentration relieves inhibition and allows the pathway to proceed again. Feedback regulation is especially important in maintaining homeostasis within the cell. One of the most common types of feedback regulation is feedback inhibition. In this mechanism, the end product of a metabolic pathway acts as an inhibitor of the first committed enzyme in that pathway. The inhibition is usually reversible and occurs when the end product binds to a specific regulatory site on the enzyme, known as
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