Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/50868
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dc.contributor.authorSavenkoff, Claudeen_US
dc.contributor.authorPackard, Ted T.en_US
dc.contributor.authorRodier, Martineen_US
dc.contributor.authorGérinno, Magalien_US
dc.contributor.authorLefèvre, Dominiqueen_US
dc.contributor.authorDenis, Michelen_US
dc.date.accessioned2018-11-24T19:30:37Z-
dc.date.available2018-11-24T19:30:37Z-
dc.date.issued1995en_US
dc.identifier.issn0142-7873en_US
dc.identifier.urihttp://hdl.handle.net/10553/50868-
dc.description.abstractRespiration is an oxidation-reduction process in which the electron flux through the respiratory electron transfer system (ETS) is sustained by the action of different dehydrogenases. These enzymes, as parts of the ETS, oxidize natural substrates (succinate, NADH and NADPH) of the cells and use the reducing equivalents to activate ATP synthesis. We studied the relative contribution of the three main dehydrogenases to the overall ETh activity in some marine organisms. Each organism was analysed for the combined and separate activities of NADH, NADPH and succinate dehydrogenases. The ETS activity was measured as the ability of each organism to reduce the tetrazolium salt, INT, when supplied with their natural substrates. The results showed that (i) NADH dehydrogenase was generally the most active dehydrogenase in prokaryotic and eukaryotic cells; (ii) INT does not fully collect reducing equivalents from succinate through the succinate dehydrogenase; and (iii) the sum of the activities measured separately exceeds the combined activity when the three enzymes are measured together. We suggest that competition of the individual dehydrogenases for a common limiting electron acceptor, ubiquinone, may explain these observations.en_US
dc.languageengen_US
dc.publisher0142-7873-
dc.relation.ispartofJournal of Plankton Researchen_US
dc.sourceJournal of Plankton Research [ISSN 0142-7873], v. 17, p. 1593-1604en_US
dc.subject251001 Oceanografía biológicaen_US
dc.subject.otherDehydrogenasesen_US
dc.subject.otherETS activityen_US
dc.titleRelative confribution of dehydrogenases to overall respiratory ETh activity in some marine organismsen_US
dc.title.alternativeRelative contribution of dehydrogenases to overall respiratory ETh activity in some marine organismsen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.typeArticleen_US
dc.identifier.doi10.1093/plankt/17.8.1593en_US
dc.identifier.scopus0028891398-
dc.contributor.authorscopusid55996500200-
dc.contributor.authorscopusid7004249480-
dc.contributor.authorscopusid7005731659-
dc.contributor.authorscopusid36498154100-
dc.contributor.authorscopusid7004182427-
dc.contributor.authorscopusid35548475600-
dc.description.lastpage1604-
dc.description.firstpage1593-
dc.relation.volume17-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.utils.revisionen_US
dc.identifier.ulpgces
dc.description.scieSCIE
item.grantfulltextnone-
item.fulltextSin texto completo-
crisitem.author.orcid0000-0002-5880-1199-
crisitem.author.fullNamePackard, Theodore Train-
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