Feedback inhibition is the process that turns off an enzyme in a metabolic pathway as the result of inhibitory actions of a product of the pathway.

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Feedback inhibition is a well-known phenomenon in which the end product of a metabolic pathway acts as a non-competitive inhibitor of one of the enzymes that catalyzes an early step in the pathway, in order to limit its own production. This regulatory mechanism is very common in cells and helps maintain a steady state of metabolite concentrations within the cell.

Feedback Inhibition Is the Process That Turns Off an Enzyme