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Fructose 1,6-bisphosphate, known in older publications as Harden-Young ester, is fructose sugar phosphorylated on carbons 1 and 6 (i.e., is a fructosephosphate). The β-D-form of this compound is common in cells. [1] Upon entering the cell, most glucose and fructose is converted to fructose 1,6-bisphosphate. [2] [3]
D-fructose 1,6-bisphosphate + H 2 O = D-fructose 6-phosphate + phosphate. Phosphofructokinase (EC 2.7.1.11) catalyses the reverse conversion of fructose 6-phosphate to fructose-1,6-bisphosphate, but this is not just the reverse reaction, because the co-substrates are different (and so thermodynamic requirements are not violated). The two ...
The molecular formula C 6 H 14 O 12 P 2 (molar mass: 340.12 g/mol) may refer to: Fructose 1,6-bisphosphate; Fructose 2,6-bisphosphate; Glucose 1,6-bisphosphate
They also shed light on the role of one compound as a glycolysis intermediate: fructose 1,6-bisphosphate. [13]: 151–158 The elucidation of fructose 1,6-bisphosphate was accomplished by measuring CO 2 levels when yeast juice was incubated with glucose. CO 2 production increased rapidly then slowed down. Harden and Young noted that this process ...
Fructosephosphates are sugar phosphates based upon fructose, and are common in the biochemistry of cells. [1] Fructosephosphates play integral roles in many metabolic pathways, particularly glycolysis, gluconeogenesis and the pentose phosphate pathway. The major biologically active fructosephosphates are: Fructose 1-phosphate; Fructose 2-phosphate
Hexokinase ATP ADP Glucose 6-phosphate Glucose-6-phosphate isomerase Fructose 6-phosphate Phosphofructokinase-1 ATP ADP Fructose 1,6-bisphosphate Fructose-bisphosphate aldolase Dihydroxyacetone phosphate + + Glyceraldehyde 3-phosphate Triosephosphate isomerase 2 × Glyceraldehyde 3-phosphate 2 × Glyceraldehyde-3-phosphate dehydrogenase NAD + + P i NADH + H + NAD + + P i NADH + H + 2 × 1,3 ...
The phosphorylation of glucose can be enhanced by the binding of fructose 6-phosphate (F6P), and lessened by the binding fructose 1-phosphate (F1P). Fructose consumed in the diet is converted to F1P in the liver. This negates the action of F6P on glucokinase, [11] which ultimately favors the forward reaction. The capacity of liver cells to ...
Fructose 6-phosphate (sometimes called the Neuberg ester) is a derivative of fructose, which has been phosphorylated at the 6-hydroxy group. It is one of several possible fructosephosphates. The β-D-form of this compound is very common in cells. [1] [2] The great majority of glucose is converted to fructose 6-phosphate upon entering a cell.