- substrate cycle
- futile c.
Medical dictionary. 2011.
substrate cycle
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Substrate-level phosphorylation — is a type of chemical reaction that results in the formation of adenosine triphosphate (ATP) by the direct transfer of a phosphate group to adenosine diphosphate (ADP) from a reactive intermediate. In cells, it occurs primarily in the cytoplasm… … Wikipedia
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
substrate-level phosphorylation — the formation of high energy phosphate bonds by phosphorylation of ADP to ATP (or GDP to GTP) coupled to cleavage of a high energy metabolic intermediate, e.g., succinyl CoA in the tricarboxylic acid cycle … Medical dictionary
Urea cycle — The urea cycle (also known as the ornithine cycle) is a cycle of biochemical reactions occurring in many animals that produces urea ((NH2)2CO) from ammonia (NH3). This cycle was the first metabolic cycle discovered (Hans Krebs and Kurt Henseleit … Wikipedia
Citric acid cycle — Overview of the citric acid cycle The citric acid cycle also known as the tricarboxylic acid cycle (TCA cycle), the Krebs cycle, or the Szent Györgyi Krebs cycle[1] … Wikipedia
Glyoxylate cycle — The glyoxylate cycle is a metabolic pathway occurring in plants, certain vertebrates, and several microorganisms, such as E. coli and yeast.The glyoxylate cycle allows these organisms to use fats for the synthesis of carbohydrates. This sequence… … 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
metabolism — /meuh tab euh liz euhm/, n. 1. Biol., Physiol. the sum of the physical and chemical processes in an organism by which its material substance is produced, maintained, and destroyed, and by which energy is made available. Cf. anabolism, catabolism … Universalium
Proteasome — Proteasomes are large protein complexes inside all eukaryotes and archaea, as well as in some bacteria. In eukaryotes, they are located in the nucleus and the cytoplasm.cite journal |author=Peters JM, Franke WW, Kleinschmidt JA |title=Distinct 19 … Wikipedia
cell — cell1 cell like, adj. /sel/, n. 1. a small room, as in a convent or prison. 2. any of various small compartments or bounded areas forming part of a whole. 3. a small group acting as a unit within a larger organization: a local cell of the… … Universalium
