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ATP is a co-substrate of the enzyme phosphofructokinase (PFK/PFK-1). In most species ATP is also an inhibitor of PFK-1 at higher concentrations. Which statement below would provide a suitable explanation for this discrepancy?

User Yuri Aps
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Answer:

phosphofructokinase (PFK/PFK-1) actually have 2 sites for binding of ATP. One is called active site and other regulatory site. when ATP bind to active site on PFK-1, it will act as co substrate of the enzyme and when ATP binds to regulatory site on PFK-1, it will regulate and inhibit the PFK-1 activity at higher concentration.

Step-by-step explanation:

User Viral Narshana
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