Regulation of the Calvin cycle for CO2 fixation as an example for general control mechanisms in metabolic cycles

DC FieldValueLanguage
dc.contributor.authorFridlyand, LE
dc.contributor.authorScheibe, R
dc.date.accessioned2021-12-23T16:13:24Z-
dc.date.available2021-12-23T16:13:24Z-
dc.date.issued1999
dc.identifier.issn03032647
dc.identifier.urihttps://osnascholar.ub.uni-osnabrueck.de/handle/unios/10549-
dc.description.abstractThe theory of a metabolic cycle with the main portion of its intermediates remaining inside the cycle during one turnover has been developed. On this basis, the regulation of the Calvin cycle is analyzed. It is demonstrated that not only the reactions of non-equilibrium enzymes, as the carboxylation of ribulose 1,5-bisphosphate, but reactions that operate close to a thermodynamic equilibrium, especially the reduction of 3-phosphoglycerate and the transketolase reaction can significantly influence the total turnover period in the Calvin cycle. The role of compensating mechanisms in the maintenance of the photosynthesis rate upon changes of environmental conditions and of enzyme contents is analyzed for the Calvin cycle. It is shown that the change of the total quantity of the metabolites is one of the main self-regulated mechanisms in the Calvin cycle. A change of the ATP/ADP ratio can be used by the cell to maintain the CO2 assimilation rate, when the total quantity of the metabolites is changed. The developed analysis permits to explain some experimental data obtained with transgenic plants with restricted efflux of carbon from the chloroplasts. (C) 1999 Elsevier Science Ireland Ltd. All rights reserved.
dc.language.isoen
dc.publisherELSEVIER SCI LTD
dc.relation.ispartofBIOSYSTEMS
dc.subject3-PHOSPHOGLYCERATE REDUCTION
dc.subjectBARLEY LEAF PROTOPLASTS
dc.subjectBiology
dc.subjectC-3 PLANTS
dc.subjectCalvin cycle
dc.subjectCARBON-DIOXIDE
dc.subjectLife Sciences & Biomedicine - Other Topics
dc.subjectMALATE DEHYDROGENASE ACTIVATION
dc.subjectMathematical & Computational Biology
dc.subjectMATHEMATICAL-MODEL
dc.subjectmetabolic cycles
dc.subjectmodelling
dc.subjectphotosynthesis
dc.subjectPHOTOSYNTHETIC ELECTRON-TRANSPORT
dc.subjectRAPID FRACTIONATION
dc.subjectRIBULOSE-1,5-BISPHOSPHATE CARBOXYLASE
dc.subjecttransgenic plants
dc.subjectTRANSGENIC POTATO PLANTS
dc.titleRegulation of the Calvin cycle for CO2 fixation as an example for general control mechanisms in metabolic cycles
dc.typejournal article
dc.identifier.doi10.1016/S0303-2647(99)00017-9
dc.identifier.isiISI:000082176300003
dc.description.volume51
dc.description.issue2
dc.description.startpage79
dc.description.endpage93
dc.contributor.orcid0000-0003-4424-9986
dc.identifier.eissn18728324
dc.publisher.placeTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
dcterms.isPartOf.abbreviationBiosystems
crisitem.author.deptFB 05 - Biologie/Chemie-
crisitem.author.deptidfb05-
crisitem.author.orcid0000-0002-6140-6181-
crisitem.author.parentorgUniversität Osnabrück-
crisitem.author.netidScRe288-
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