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Biosystems. 2011 Feb;103(2):212-23. doi: 10.1016/j.biosystems.2010.10.015. Epub 2010 Nov 12.

Spatiotemporal dynamics of the Calvin cycle: multistationarity and symmetry breaking instabilities.

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Institute of Biochemistry and Biology, University of Potsdam, Germany.


The possibility of controlling the Calvin cycle has paramount implications for increasing the production of biomass. Multistationarity, as a dynamical feature of systems, is the first obvious candidate whose control could find biotechnological applications. Here we set out to resolve the debate on the multistationarity of the Calvin cycle. Unlike the existing simulation-based studies, our approach is based on a sound mathematical framework, chemical reaction network theory and algebraic geometry, which results in provable results for the investigated model of the Calvin cycle in which we embed a hierarchy of realistic kinetic laws. Our theoretical findings demonstrate that there is a possibility for multistationarity resulting from two sources, homogeneous and inhomogeneous instabilities, which partially settle the debate on multistability of the Calvin cycle. In addition, our tractable analytical treatment of the bifurcation parameters can be employed in the design of validation experiments.

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