fruktoz6fosfata

Fruktoz6fosfata, also known as fructose-6-phosphate or F6P, is a crucial intermediate molecule in cellular respiration and photosynthesis. It is a phosphorylated form of fructose, a simple sugar. Specifically, it is fructose with a phosphate group attached to the sixth carbon atom.

In glycolysis, the initial stage of cellular respiration, fructose-6-phosphate is formed from fructose-1,6-bisphosphate through the action of an enzyme. It is then further processed in subsequent steps of glycolysis. Conversely, in photosynthesis, fructose-6-phosphate is a product of the Calvin cycle, where it is synthesized from glyceraldehyde-3-phosphate. It can then be converted into other sugars, including glucose-6-phosphate, which can be used to build cellulose or stored as starch.

The interconversion between fructose-6-phosphate and its other phosphorylated forms is tightly regulated by enzymes, ensuring that cellular energy production and carbohydrate metabolism are balanced according to the cell's needs. This molecule plays a central role in linking carbohydrate breakdown for energy and carbohydrate synthesis for storage and structural purposes.