fruktosio6fosfaatti

Fruktosio6fosfaatti, also known as fructose-6-phosphate or F6P, is an important intermediate in carbohydrate metabolism. It is a phosphorylated form of fructose, with a phosphate group attached to the sixth carbon atom of the fructose molecule. Fruktosio6fosfaatti plays a key role in glycolysis, the metabolic pathway that breaks down glucose to produce energy. Within glycolysis, it is formed from fructose-1,6-bisphosphate and is subsequently converted to fructose-1,6-bisphosphate in the reverse direction of glycolysis, also known as gluconeogenesis.

The interconversion between fruktosio6fosfaatti and fructose-1,6-bisphosphate is catalyzed by the enzyme phosphofructokinase. This reaction is a major regulatory point in glycolysis, meaning its activity can be controlled to speed up or slow down the overall process. Fruktosio6fosfaatti is also involved in other metabolic pathways, including the pentose phosphate pathway, which produces NADPH and precursor molecules for nucleotide synthesis. Its structure as a six-carbon sugar phosphate allows it to participate in various enzymatic reactions essential for cellular energy production and biosynthesis.