MOSES: dynamic model of glucose pulse

SysMO is a European transnational funding and research initiative on "Systems Biology of Microorganisms".

The goal pursued by SysMO was to record and describe the dynamic molecular processes going on in unicellular microorganisms in a comprehensive way and to present these processes in the form of computerized mathematical models.

Systems biology will raise biomedical and biotechnological research to a new quality level and contribute markedly to progress in understanding. Pooling European research ...

MOSES (Micro Organism Systems biology: Energy and Saccharomyces cerevisiae) develops a new Systems Biology approach, which is called 'domino systems biology'. It uses this to unravel the role of cellular free energy ('ATP') in the control and regulation of cell function. MOSES operates though continuous iterations between partner groups through a new systems-biology driven data-management workflow. MOSES also tries to serve as a substrate for three or more other SYSMO programs.

Investigation of dynamics of the central metabolism (glycolysis, PPP, anaplerotic reactions, purines) of yeast Saccharomyces cerevisiae in anaerobic conditions

The steady state anaerobic culture (D = 0.1 h-1) was pertrubed by sudden increase of the extracellular glucose up to 1 g/L and both extra- and intracellular transient metabolite concentrations were measured

Monitoring of partial pressure of CO2 in off-gas. Glucose pulse was performed in anaerobically growing yeast Saccharomyces cerevisiae in steady state chemostat (D = 0.1 h-1) and transent concentrations of the extra- and intracellular metabolites from central carbon metabolism (e.g. glycolysis, PPP, glycerol, purines, etc) were measured.

Dynamics of intracellular metabolites (pyr, suc, fum, mal, akg, pep, g3p, 2pg, 3pg, cit, r5p, f6p, g6p, 6pg, ATP, ADP, AMP, UTP, GTP, inosine, NAD+, IMP, UDP, NADP+, CTP, AdenyloSuccinate, NADPH, trehalose) during glucose pulse. Glucose pulse was performed in anaerobically growing yeast Saccharomyces cerevisiae in steady state chemostat (D = 0.1 h-1) and transent concentrations of the extra- and intracellular metabolites from central carbon metabolism (e.g. glycolysis, PPP, glycerol, purines, ...

Dynamics of extracellular metabolites (glc, pyr, suc, lac, gly, ac, etoh, fum, mal, cit, including loss of akg, g3p, 2pg, 3pg, r5p, f6p, g6p, 6pg) during glucose pulse. Glucose pulse was performed in anaerobically growing yeast Saccharomyces cerevisiae in steady state chemostat (D = 0.1 h-1) and transent concentrations of the extra- and intracellular metabolites from central carbon metabolism (e.g. glycolysis, PPP, glycerol, purines, etc) were measured.

Steady state concentrations of intracellular metabolites in yeast Saccharomyces cerevisiae anaerobic chemostat at D = 0.1 h-1 on minimal medium. All metabolite concentrations are in mmol/L(CV).

Steady state concentrations of extracellular metabolites in yeast Saccharomyces cerevisiae anaerobic chemostat at D = 0.1 h-1 on minimal medium. All metabolite concentrations are in mmol/L(R) except CO2, which is in parts of the partial pressure.

Steady state metabolic fluxes measured in glucose-limited chemostat of Saccharomyces cerevisiae at D = 0.1 h-1 growing on minimal medium. Fluxes are: glucose, ethanol, glycerol, acetate, succinate, pyruvate, lactate, citrate, malate, a-ketoglutarate, fumarate

The model includes glycolysis, pentosephosphate pathway, purine salvage reactions, purine de novo synthesis, redox balance and biomass growth. The network balances adenylate pool as opened moiety.