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Evaluation of central metabolism based on a genomic database ofSynechocystis PCC6803

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Abstract

Cyanobacteria produce industrially important secondary metabolites such as lipopeptide, oligosaccharide, fatty acid (esp. sulfolipid),etc. Among them,Synechocystis PCC6803 is the first strain with a publicly available full genome sequence, as of 1996, and is one of the most extensively studied photosynthetic microorganisms. Using this genomic information, the central metabolism ofSynechocystis PCC6803 was reconstructed, including photosynthesis, oxidative phosphorylation, glycolysis, pyruvate metabolism, TCA cycle, carbon fixation, and transport system. Each biochemical reaction was carefully incorporated into the model, taking into consideration the metabolite formula, stoichiometry, charge balance, and thermodynamic properties using information from genomic and metabolic databases as well as biochemical literature. The metabolic flux of the model was calculated using flux balance analysis according to its cultivation with various carbon sources. The results of simulation were in accordance with experimental data, which suggests that the central metabolism model can properly estimate the behavior ofSynechocystis PCC6803. This model would aid in the understanding of the whole cell metabolism ofSynechocystis PCC6803, the first effort of its kind for photosynthetic bacteria.

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Authors and Affiliations

  1. Institute of Industrial Biotechnology, Department of Biological Engineering, Inha University, 402-751, Incheon, Korea

    Seong-Joo Hong & Choul-Gyun Lee

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  1. Seong-Joo Hong
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  2. Choul-Gyun Lee
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Correspondence to Choul-Gyun Lee.

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Hong, SJ., Lee, CG. Evaluation of central metabolism based on a genomic database ofSynechocystis PCC6803. Biotechnol. Bioprocess Eng. 12, 165–173 (2007). https://doi.org/10.1007/BF03028644

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  • DOI: https://doi.org/10.1007/BF03028644

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