Biology / Bio 0532 · Atom · ~20 seconds
Feedback Inhibition
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Feedback inhibition is a pathway's end product binding back to inhibit an earlier enzyme in its own production, slowing the pathway once enough product accumulates.
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Excess ATP allosterically inhibits an early enzyme in glucose catabolism, the very pathway that produces ATP.
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Feedback inhibition targets the pathway's own regulatory enzyme, usually its first committed step, not every enzyme along the way.