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Dependence of the Calvin cycle activity on kinetic parameters for the interaction of non‐equilibrium cycle enzymes with their substrates

Pettersson, Gösta LU and Ryde-Pettersson, Ulf LU (1989) In European Journal of Biochemistry 186(3). p.683-687
Abstract

Kinetic model studies and control analyses of the Calvin photosynthesis cycle have been performed to characterize the dependence of the cycle activity on maximum velocities and Kmvalues for the interaction of the non‐equilibrium cycle enzymes and ATP synthetase with their substrates under conditions of light and carbon dioxide saturation. The results show that Km values have no major influence on the cycle activity at optimal concentrations of external orthophosphate. The maximum cycle activity is controlled mainly by the catalytic capacities of ATP synthetase and sedoheptulose‐bisphosphatase, and is close to the maximum cycle flux that can be supported by these two enzymes. Copyright © 1989, Wiley Blackwell. All... (More)

Kinetic model studies and control analyses of the Calvin photosynthesis cycle have been performed to characterize the dependence of the cycle activity on maximum velocities and Kmvalues for the interaction of the non‐equilibrium cycle enzymes and ATP synthetase with their substrates under conditions of light and carbon dioxide saturation. The results show that Km values have no major influence on the cycle activity at optimal concentrations of external orthophosphate. The maximum cycle activity is controlled mainly by the catalytic capacities of ATP synthetase and sedoheptulose‐bisphosphatase, and is close to the maximum cycle flux that can be supported by these two enzymes. Copyright © 1989, Wiley Blackwell. All rights reserved

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
European Journal of Biochemistry
volume
186
issue
3
pages
5 pages
publisher
Wiley-Blackwell
external identifiers
  • scopus:0024792414
ISSN
0014-2956
DOI
10.1111/j.1432-1033.1989.tb15260.x
language
English
LU publication?
yes
id
f53c1ac6-e906-4f06-915c-9f1c19fa563a
date added to LUP
2017-02-04 11:22:31
date last changed
2017-05-01 20:31:38
@article{f53c1ac6-e906-4f06-915c-9f1c19fa563a,
  abstract     = {<p>Kinetic model studies and control analyses of the Calvin photosynthesis cycle have been performed to characterize the dependence of the cycle activity on maximum velocities and K<sub>m</sub>values for the interaction of the non‐equilibrium cycle enzymes and ATP synthetase with their substrates under conditions of light and carbon dioxide saturation. The results show that K<sub>m</sub> values have no major influence on the cycle activity at optimal concentrations of external orthophosphate. The maximum cycle activity is controlled mainly by the catalytic capacities of ATP synthetase and sedoheptulose‐bisphosphatase, and is close to the maximum cycle flux that can be supported by these two enzymes. Copyright © 1989, Wiley Blackwell. All rights reserved</p>},
  author       = {Pettersson, Gösta and Ryde-Pettersson, Ulf},
  issn         = {0014-2956},
  language     = {eng},
  number       = {3},
  pages        = {683--687},
  publisher    = {Wiley-Blackwell},
  series       = {European Journal of Biochemistry},
  title        = {Dependence of the Calvin cycle activity on kinetic parameters for the interaction of non‐equilibrium cycle enzymes with their substrates},
  url          = {http://dx.doi.org/10.1111/j.1432-1033.1989.tb15260.x},
  volume       = {186},
  year         = {1989},
}