Phosphoglycerate kinase acts as a futile cycle at high temperature

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 ...

e:Bio - Innovations Competition Systems Biology

Silicon cell model for the central carbohydrate metabolism of the archaeon Sulfolobus solfataricus under temperature variation

Within the e:Bio - Innovationswettbewerb Systembiologie (Federal Ministry of Education and Research (BMBF)), the SulfoSYSBIOTECH consortium (10 partners), aim to unravel the complexity and regulation of the carbon metabolic network of the thermoacidophilic archaeon Sulfolobus solfataricus (optimal growth at 80°C and pH 3) in order to provide new catalysts ‘extremozymes’ for utilization in White Biotechnology.

Based on the available S. solfataricus genome scale metabolic model (Ulas et al., 2012) ...

PGK-GAPDH reactions were studied in vitro at 30 and 70 using yeast or Sso enzymes

SED-ML: https://jjj.bio.vu.nl/models/experiments/kouril2017_fig4b/simulate https://jjj.bio.vu.nl/models/experiments/kouril2017_fig4c/simulate

PGK reaction at 30 C. Yeast PGK was incubated at 30 C, in the presence or absence of the ATP recycling system, and the conversion of 3 PG to BPG was followed. SED-ML simulations Fig. 1A: https://jjj.bio.vu.nl/models/experiments/kouril2017_fig1a/simulate

PGK reaction at 70C. Sulfolobus solfataricus PGK was incubated at 70C in presence and absence of an ATP recycling system. Changes in metabolite concentrations was followed via 31P NMR or enzymatic analyses.

SED-ML: https://jjj.bio.vu.nl/models/experiments/kouril2017_fig3b/simulate https://jjj.bio.vu.nl/models/experiments/kouril2017_fig3c/simulate https://jjj.bio.vu.nl/models/experiments/kouril2017_fig3d/simulate

BPG produced with yeast PGK was incubated at 70 C,upon which BPG rapidly dephosphorylates to 3PG. SED-ML: https://jjj.bio.vu.nl/models/experiments/kouril2017_fig2b/simulate

Experimental data for the yeast PGK incubations at 30C, with and without recycling of ATP.

A model for the PGK reaction of yeast in presence or absence of the ATP recycling reactions

Changes in metabolite concentrations were either quantified via 31P NMR or enzymatically

BPG degradation at 70C

BPG stability analysis

PGK 70C model

PGK - GAPDH models

incubations with yeast enzymes at 30C

metabolite quantification via enzymatic analysis

PGK yeast without recycling of ATP

PGK yeast with recycling of ATP

BPG stability notebook

PGK model for S. solfataricus

PGK-GAPDH model Sulfolobus kouril8

PGK-GAPDH model yeast kouril7

PGK-GAPDH models yeast and Sulfolobus Fig. 4 in manuscript

PGK 70C SBML

PGK yeast Fig1a

PGK yeast with/without recycling