Krebs cycle


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Krebs cycle

 (krĕbz)
n.
A series of enzymatic reactions in aerobic organisms involving oxidative metabolism of acetyl units and producing high-energy phosphate compounds such as ATP, which serve as the main source of cellular energy. Also called citric acid cycle, tricarboxylic acid cycle.

[After Sir Hans Adolf Krebs.]

Krebs cycle

n
(Biochemistry) a stage of tissue respiration: a series of biochemical reactions occurring in mitochondria in the presence of oxygen by which acetate, derived from the breakdown of foodstuffs, is converted to carbon dioxide and water, with the release of energy. Also called: citric acid cycle or tricarboxylic acid cycle

Krebs′ cy`cle


n.
the metabolic sequence of enzyme-driven reactions by which carbohydrates, proteins, and fatty acids produce carbon dioxide, water, and ATP.
[1940–45; after H. A. Krebs]

Krebs cycle

A series of chemical reactions in most aerobic organisms in which cells break down glucose and other molecules in the presence of oxygen to produce carbon dioxide and energy in the form of ATP. The Krebs cycle occurs in the mitochondria of all organisms except bacteria. Also called citric acid cycle.

Krebs cycle

(or citric acid cycle) A series of biochemical reactions in living cells that break down carbohydrates, releasing energy. See catabolism, metabolism.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.Krebs cycle - in all plants and animals: a series of enzymatic reactions in mitochondria involving oxidative metabolism of acetyl compounds to produce high-energy phosphate compounds that are the source of cellular energy
metabolic process, metabolism - the organic processes (in a cell or organism) that are necessary for life
biological process, organic process - a process occurring in living organisms
oxidative phosphorylation - an enzymatic process in cell metabolism that synthesizes ATP from ADP
References in periodicals archive ?
More specifically, you can thank the citric acid cycle, or, the Krebs cycle (as my inner biology student somehow remembers it), for this energy expenditure.
First introduced in the 1950s because it was thought that psoriasis was caused by a biochemical defect of the citric acid (Krebs) cycle, evidence suggests that it has nothing to do with the Krebs cycle, and the major active compound appears to be dimethyl fumarate.
Pyruvate can enter 3 alternative metabolic pathways: 1) the mitochondrial Krebs cycle, 2) conversion to lactate in the cell cytosol, or 3) conversion back to glucose in the process of gluconeogenesis.
I tell them not to worry about learning the Krebs cycle (whatever that is), but instead to look at old exam questions that might be reused by a tester too burnt out or demented to write new ones.
The glyoxylate cycle bypasses the decarboxylation steps of Krebs cycle and causes the assimilation of liquid carbon from acetyl-CoA.
1) Specifically, I presented data concerning 24-hour urinary excretion of Krebs cycle metabolites in 236 patients.
Unlike a medical student, you are not expected to know the Krebs cycle.
One such syndrome, hereditary leiomyomatosis and renal cell cancer (HLRCC), is caused by germline mutations in the FH gene encoding the Krebs cycle enzyme fumarate hydratase.
Glutamate dehydrogenase (GDH) a mitochondrial enzyme catalyses the oxidative deamination of glutamate providing a- ketoglutarate to the Krebs cycle (Reddy and Venugopal 1990).
Alcohol in Krebs cycle is increased the reaction of oxaloacetate to maleate so it increase the maleate.
The main products of Krebs cycle, dicarcoxylic acids (suberic, adipic) and succinyl purine derivatives among other metabolites may be found in body fluids with different rates.
It is comprised of (a) a Krebs cycle intermediate, a precursor of a Krebs cycle intermediate, or a combination thereof, comprising diethylhexyl malate; (b) a pharmaceutically acceptable topical vehicle comprising a mitochondrial fuel or substance that is efficiently convertible to mitochondrial fuel by normal skin cell metabolism comprising tristearyl glycerol, and (c) at least one antioxidant selected from the group consisting of undutched raw chocolate, green tea and resveratrol.