Question

How does a cell maintain or attain its “desirable” (as needed for its current status) cellular concentration of fructose-6-P?

Answer 1

Answer:

• Fructose-6-P is produced during glycolysis in the cell cytoplasm from gluocose -6-P and is a reversible reaction.
• As per the requirement the enzyme phosphoglucoisomerase which catalyses the conversion of glucose-6-P to fructose-6-P in cells is activated and maintain at its inactive form if there is no need for higher level ATP synthesis.
• And higher content of Fructose-6-P is converted to gluocse-6-P by reversible reaction and maintain its desirable concentration.

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