title: [Allosteric regulation in the open futile cycle fructose-6-P--fructose-1,6-P2].
abstract: The effect of fructosebisphosphatase inhibition and phosphofructokinase activation by fructose-1,6-bisphosphate on a parasite recirculation of substrates in the futile (energy-dissipating) cycle fructose-6-P in equilibrium fructose-1,6-P2 has been studied. Both the inhibition and activation have been shown to produce self-oscillations in the cycle under flow-through conditions. The common recirculation with both regulatory mechanisms present is about half as high as with only one of them. The analysis fulfilled resulted in a conclusion of the importance of the concerted action of substrate inhibition and product activation both in the cycle fructose-6-P in equilibrium fructose-1,6-P2 and in the cycles glutamine in equilibrium glutamate and acetyl-CoA in equilibrium fatty acids playing an important part in the amino acid and lipid metabolism regulation.
mesh_terms: D000494:Allosteric Regulation; D004789:Enzyme Activation; D006597:Fructose-Bisphosphatase / Q000378:metabolism*; D005974:Glutamate-Ammonia Ligase / Q000378:metabolism; D005972:Glutaminase / Q000378:metabolism; D008433:Mathematics; D008956:Models, Chemical; D010732:Phosphofructokinase-1 / Q000378:metabolism*
chemical_list: D010732:Phosphofructokinase-1; D006597:Fructose-Bisphosphatase; D005972:Glutaminase; D005974:Glutamate-Ammonia Ligase
vernacular_title: Allostericheskaia reguliatsiia v otkrytom futil'nom tsikle fruktozo-6-P--fruktozo-1,6-P2.