TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A quinone that functions as an electron transfer agent between cytochromes in the Krebs cycle.  4, record 1, English, - ubiquinone

Record number: 1, Textual support number: 1 CONT

Ubiquinone is a hydrogen carrier in mitochondrial and bacterial membranes.  3, record 1, English, - ubiquinone

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

L'ubiquinone est un transporteur d'hydrogène dans les membranes des bactéries et des mitochondries.  3, record 1, French, - ubiquinone

Record number: 1, Textual support number: 1 OBS

Voir quinone.  3, record 1, French, - ubiquinone

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  French

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

Any coenzyme that mediates the transfer of hydrogen ions by alternating between an oxidized and a reduced form.  2, record 3, English, - hydrogen%20carrier

Record number: 3, Textual support number: 1 CONT

The most important carriers of hydrogen in catabolic reactions [are] NADH and NAD+.... The part of the NAD+ molecule known as the nicotinamide ring is able to accept a hydrogen atom together with an additional electron (a hydride ion, H-), forming NADH. In this reduced form, the nicotinamide ring has a reduced stability because it is no longer stabilized by resonance. As a result, the added hydride ion is easily transferred to other molecules. In the biological oxidation of a substrate molecule such as an alcohol, two hydrogen atoms are lost from the substrate. One of these is added as a hydride ion to NAD+, producing NADH, while the other is released into solution as a proton (H+)  3, record 3, English, - hydrogen%20carrier

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Toute coenzyme pouvant exister sous forme oxydée ou sous forme réduite, qui intervient dans les réactions couplées d'hydrogénation et de déshydrogénation. Les principaux transporteurs d'hydrogène sont le NAD, le NADP et le FAD.  1, record 3, French, - transporteur%20d%27hydrog%C3%A8ne

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

Activity exhibited by the coenzymes when they serve in enzymic reactions by carrying certain chemical groups from one substrate (substance activated by the enzyme) to another. In doing so, the coenzyme shuttles between two or more enzymes and unites them in a coupled enzyme system. In coupled reactions, the coenzymes are regenerated; therefore, minute amounts of coenzymes are sufficient for metabolism in living organisms.  2, record 4, English, - coenzyme%20activity

Record number: 4, Textual support number: 1 CONT

Immobilized NAD or immobilized NADP has been applied for the purification of oxidoreductases and for elucidation of the binding mechanism between coenzyme and apoenzyme, or of the reaction mechanism of the enzyme. These affinity adsorbents can adsorb various enzymes, but the affinity depends on the kind of enzyme. Thus, these enzymes can be separated by using the differences of affinities. Some of these immobilized NAD(P) preparations have coenzyme activity with various oxidoreductases.  3, record 4, English, - coenzyme%20activity

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Traditionnellement, on classait les vitamines selon un critère de solubilité en: - vitamines hydrosolubles; - vitamines liposolubles. [...] Actuellement, les vitamines ne se conçoivent bien que sous l'angle de leur action coenzymatique. Celle-ci ne permet pas encore d'expliquer tous les signes de la pathologie, mais elle constitue une voie d'abord cohérente et efficace. C'est pourquoi vitamines et co-enzymes non vitaminiques se distinguent en : - coenzymes de transfert de groupements;- co-enzymes d'oxydo-réduction. Un troisième groupe comprenant les vitamines qui n'ont pas, dans l'état actuel de nos connaissances, de caractère coenzymatique net.  1, record 4, French, - action%20co%2Denzymatique

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

Any low - MWt, non-protein, freely dissociable organic molecule which is necessary for the activity of a given enzyme; e.g. dehydrogenesis require electron acceptors such as NADP⁺ or NADP⁺ for catalysis of redox reactions.  2, record 5, English, - coenzyme

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Molécule non protéique servant de cocatalyseur qui se combine à l'enzyme. Il est transformé en même temps que le substrat, et se sépare de l'enzyme sous cette forme modifiée.  2, record 5, French, - coenzyme

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 DEF

Molécula orgánica compleja que forma parte y es fundamental para la función de algunas enzimas.  2, record 5, Spanish, - coenzima

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

Pyridoxal-phosphate (PLP, pyridoxal-5'-phosphate) is a coenzyme of many enzymatic reactions. It is the active form of vitamin B6 which comprises three natural organic compounds, pyridoxal, pyridoxamine and pyridoxine. PLP acts as a coenzyme in all transamination reactions, and in some decarboxylation and deamination reactions of amino acids.  8, record 6, English, - pyridoxal%20phosphate

Record number: 6, Textual support number: 1 OBS

Chemical formula: C₈H₁₀NO₆P  9, record 6, English, - pyridoxal%20phosphate

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

Coenzyme des transaminases qui joue le rôle d'accepteur d'ammoniac dans la transformation des alpha-aminoacides en alpha-cétoacides.  7, record 6, French, - phosphate%20de%20pyridoxal

Record number: 6, Textual support number: 1 CONT

Le terme vitamine B6 désigne 6 composés : le pyridoxal (PL), la pyridoxine (PN), la pyridoxamine (PM) et leurs dérivés phosphorylés, le pyridoxal 5'-phosphate (PLP), la pyridoxamine 5'-phosphate (PMP), la pyridoxine 5'-phosphate (PNP).  8, record 6, French, - phosphate%20de%20pyridoxal

Record number: 6, Textual support number: 1 OBS

Formule chimique : C₈H₁₀NO₆P  9, record 6, French, - phosphate%20de%20pyridoxal

Record 6,  Textual support,  Spanish

Record number: 6, Textual support number: 1 CONT

La coenzima que contiene un aldehído, el fosfato de piridoxal (PLP) que es un derivado de la piridoxina (vitamina B6).  1, record 6, Spanish, - fosfato%20de%20piridoxal

Record number: 6, Textual support number: 2 CONT

La Vitamina B6 es una vitamina hidrosoluble que se presenta en seis formas diferentes: piridoxal (PL), piridoxina (PN), piridoxamina (PM) y sus correspondientes ésteres fosfóricos, 5'fosfato de piridoxal (PLP), 5'fosfato de piridoxina (PNP) y 5'fosfato de piridoxamina (PMP).  3, record 6, Spanish, - fosfato%20de%20piridoxal

Record number: 6, Textual support number: 1 OBS

Fórmula química: C₈H₁₀NO₆P  5, record 6, Spanish, - fosfato%20de%20piridoxal

Record 7,  Textual support,  English

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Coenzyme constituée de flavines.  1, record 7, French, - coenzyme%20de%20type%20flavine

Record number: 7, Textual support number: 1 OBS

Équivalent proposé en collaboration avec un technicien au laboratoire d'alimentation humaine de l'Université Laval à Sainte-Foy.  1, record 7, French, - coenzyme%20de%20type%20flavine

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

Coenzyme Q10 (Ubiquinone) is necessary for the energy production responsible for our life processes. It is an essential component of our cells and is utilized by the mitochondria in the normal process of energy production.  1, record 8, English, - coenzyme%20Q10

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

La coenzyme Q 10 est un antioxydant, sa fonction principale est de donner l'énergie essentielle aux cellules.  1, record 8, French, - coenzyme%20Q10

Record 8,  Textual support,  Spanish

Record number: 8, Textual support number: 1 DEF

Sustancia que ayuda a la oxidación de los nutrientes en las células para crear energía.  1, record 8, Spanish, - coenzima%20Q10

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

Substituted benzoquinone ... that plays a role in the respiratory electron transport chain, where it receives hydrogen or electrons from a flavoprotein and is reduced to a quinol, which then reduces the next member of the chain (a cytochrome).  3, record 9, English, - coenzyme%20Q

Record number: 9, Textual support number: 1 CONT

In the respiratory chain ..., the simplest of the electron carriers is a small hydrophobic molecule known as ubiquinone, or coenzyme Q. Ubiquinone can pick up or donate either one or two electrons, and it temporarily picks up a proton from the medium along with each electron that it carries.  2, record 9, English, - coenzyme%20Q

Record number: 9, Textual support number: 1 OBS

CoQ is abbreviation for coenzyme Q.  4, record 9, English, - coenzyme%20Q

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Quinone mitochondriale intervenant dans la chaîne respiratoire.  1, record 9, French, - ubiquinone

Record number: 9, Textual support number: 1 CONT

Les ubiquinones sont universellement répandues, comme leur nom l'indique, et on les trouve surtout dans les mitochondries animales et végétales où elles jouent un rôle important dans le système transporteur d'électrons. [...] La plastoquinone a une structure très voisine et participe au transport des électrons dans les chloroplastes.  4, record 9, French, - ubiquinone

Record number: 9, Textual support number: 1 OBS

CoQ est une abréviation de coenzyme Q.  3, record 9, French, - ubiquinone

Record 9,  Textual support,  Spanish

Record number: 9, Textual support number: 1 DEF

Derivado de la 2-3-dimetoxi 5-metil-1, 4-benzoquinona. Funciona como transportador de electrones en sistemas procarióticos y eucarióticos.  1, record 9, Spanish, - coenzima%20Q

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

Coenzyme consisting of pantothenic acid linked to a mononucleotide based on adenine. It is an intermediate involved in the transfer of acetyl groups (with which it combines to form acetyl-CoA) and other fatty acyl groups which are bound to a thiol group on the molecule. It plays an important role in fatty acid synthesis and oxidation, as well as in the first step of the TCA cycle.  5, record 10, English, - coenzyme%20A

Record number: 10, Textual support number: 1 CONT

CoA ... was discovered as an essential cofactor for the acetylation of sulfanilamide in the liver and of choline in the brain. It has been established that CoA is involved in many biochemical reactions in the body as an "activator" of normally less reactive carbon fragments and a "transferer" of these fragments to different molecules.... After oxidative decarboxylation of pyruvic acid, CoA combines with the two-carbon acetate fragment to form acetyl-CoA or "active" acetate. Coenzyme A is necessary for the activation, synthesis, and degradation of fatty acids. Synthesis of cholesterol and ultimately the production of steroid hormones are also coenzyme A dependent.  6, record 10, English, - coenzyme%20A

Record number: 10, Textual support number: 1 OBS

CoA and CoA-SH are abbreviations for coenzyme A.  3, record 10, English, - coenzyme%20A

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 DEF

Coenzyme des transacétylases, qui, grâce à son groupement fonctionnel thiol (présent dans la molécule de mercapto-éthylamine qui le compose), se combine à différents métabolites par une liaison «riche en énergie».  3, record 10, French, - coenzyme%20A

Record number: 10, Textual support number: 1 CONT

Le co-enzyme A dérive d'une vitamine du groupe B, l'acide pantothénique, qui est combiné, d'une part à un phosphate lequel est lié par une liaison pyrophosphate à une molécule d'adénosine 3'-5' diphosphate, d'autre part à une molécule de thio-éthylamine (ou cysté-amine). C'est le groupement thiol de cette dernière qui est la partie active de la molécule : son H peut être substitué par divers radicaux acyle (notamment acétyle) pour former des acyl-co-enzymes A ou acides gras activés qui chimiquement sont des thio-esters, composés très réactifs (acétyl-co-enzyme A, par exemple).  4, record 10, French, - coenzyme%20A

Record number: 10, Textual support number: 1 OBS

CoA et CoA-SH sont des abréviations de coenzyme A.  2, record 10, French, - coenzyme%20A

Record number: 10, Textual support number: 2 OBS

Termes vieillis à éviter : - co-acétylase - co-acylase - co-enzyme d'activation - coenzyme des acylations - coenzyme acétylant - coenzyme de Lipmann.  2, record 10, French, - coenzyme%20A

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  French

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  French

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 DEF

A grayish-white powder, soluble in water and methanol, that is a coenzyme in numerous dehydrogenasic reactions.  1, record 13, English, - nicotinamide%20adenine%20dinucleotide%20phosphate

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 DEF

Co-enzyme de certaines déhydrogénases, intervenant dans les réactions très voisin du NAD dont il ne diffère que par un résidu phosphate supplémentaire.  2, record 13, French, - nicotinamide%2Dad%C3%A9nine%2Ddinucl%C3%A9otide%2Dphosphate

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 CONT

The enzyme lactate dehydrogenase, ... transfers electrons from lactate to the oxidized form of the coenzyme nicotinamide adenine dinucleotide, NAD⁺, to yield pyruvate, the reduced coenzyme NADH, and a proton.... The reduced form of the coenzyme, NADH, absorbs light in the ultraviolet at 340 nm; whereas the oxidized form NAD⁺, the lactate, and the pyruvate do not. Thus the progress of the reaction in the forward direction can be followed by measuring the increase in light absorption of the system at 340 nm in a spectrophotometer.  4, record 14, English, - nicotinamide%20adenine%20dinucleotide

Record 14,  Textual support,  French

Record number: 14, Textual support number: 1 DEF

Coenzyme essentiel au métabolisme cellulaire intervenant dans les mécanismes d'oxydo-réduction (glycolyse, oxydations respiratoires terminales, réductions de l'azote) en agissant comme agent de transfert d'hydrogène et d'électrons.  3, record 14, French, - nicotinamide%20ad%C3%A9nine%20dinucl%C3%A9otide

Record 14,  Textual support,  Spanish