The bifunctional enzyme is also known as:
A) phosphofructokinase I.
B) phosphofructokinase II.
C) fructose-1,6 phosphatase.
D) protein kinase 2.
E) phosphoenolpyruvate carboxykinase.

Question

Quizplus · Accepted Answer

Phosphofructokinase II (PFK2) is considered a bifunctional enzyme because it has two distinct catalytic activities in one polypeptide chain. It can both phosphorylate fructose-6-phosphate to fructose-2,6-bisphosphate (kinase activity) and dephosphorylate fructose-2,6-bisphosphate to fructose-6-phosphate (phosphatase activity), playing a crucial role in regulating glycolysis and gluconeogenesis.

The Bifunctional Enzyme Is Also Known As