futile cycle

futile cycle
бесполезный цикл
набор циклических ферментативных реакций, в результате которых высвобождается тепловая энергия при гидролизе АТФ

English-Russian Biotechnology Glossary. . 2007.

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  • Futile cycle — A Futile cycle is when two metabolic pathways run simultaneously in opposite directions and have no overall effect other than wasting energy. [cite journal |author=Schwender J, Ohlrogge J, Shachar Hill Y |title=Understanding flux in plant… …   Wikipedia

  • futile cycle — a combination of two or more biochemical reactions resulting only in the hydrolysis of ATP or other high energy compounds; thermogenesis may result. Called also substrate c …   Medical dictionary

  • cycle — 1. A recurrent series of events. 2. A recurring period of time. 3. One successive compression and rarefaction of a wave, as of a sound wave. [G. kyklos, circle] anovulatory c. a …   Medical dictionary

  • futile cycles — Any sequence of enzyme catalysed reactions in which the forward and reverse processes (catalysed by different enzymes) are constitutively active. Frequently used to describe the cycle of phosphorylation and dephosphorylation of phosphatidyl… …   Dictionary of molecular biology

  • Glucose cycle — The glucose cycle (also known as the hepatic futile cycle) occurs primarily in the liver and is the dynamic equilibrium between glucose and glucose 6 phosphate. This is important for maintaining a constant concentration of glucose in the blood… …   Wikipedia

  • substrate cycle — futile c …   Medical dictionary

  • Metabolism — Cell metabolism redirects here. For the journal, see Cell Metabolism. Structure of adenosine triphosphate, a central intermediate in energy metabolism Metabolism (from Greek: μεταβολή metabolē , change or Greek: μεταβολισμός metabolismos,… …   Wikipedia

  • Gluconeogenesis — Not to be confused with Glycogenesis or Glyceroneogenesis. Gluconeogenesis pathway with key molecules and enzymes. Many steps are the opposite of those found in the glycolysis. Gluconeogenesis (abbreviated GNG) is a metabolic pathway that… …   Wikipedia

  • Pyruvate kinase — is an enzyme involved in glycolysis. It catalyzes the transfer of a phosphate group from phosphoenolpyruvate (PEP) to ADP, yielding one molecule of pyruvate and one molecule of ATP. ReactionThe reaction with pyruvate kinase: pyruvate kinase PEP > …   Wikipedia

  • Redox — Illustration of a redox reaction Redox (portmanteau for reduction oxidation) reactions describe all chemical reactions in which atoms have their oxidation state changed. This can be either a simple redox process, such as the oxidation of carbon… …   Wikipedia

  • Vladimir (Waiting for Godot) — Vladimir (affectionately known as Didi; a small boy calls him Mr. Albert) is one of the two main characters from Samuel Beckett s Waiting for Godot. Contents 1 Personality 2 The passage of time 3 Appearance …   Wikipedia

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