Investigations
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The Sulfolobus systems biology (‘‘SulfoSYS’’)-project represented the first (hyper-)thermophilic Systems Biology project, funded within the European trans-national research initiative ‘‘Systems Biology of Microorganisms’’. Within the SulfoSYS-project, focus lies on studying the effect of temperature variation on the central carbohydrate metabolism (CCM) of S. solfataricus that is characterized by the branched Entner–Doudoroff (ED)-like pathway for sugar (glucose, galactose) degradation and the ...
Submitter: Pawel Sierocinski
Studies: Pilot experiment - S. solfataricus grown at 70 and 80 C.
Assays: Comparison of proteome of S. solfataricus at 70 and 80C, Comparison of transcriptome of S. solfataricus at 70 and 80C, Enzyme activity tests for S. solfataricus, Fermentation of S. solfataricus at 70 and 80C in a batch fermenter, Intracellular metabolomics of S. solfataricus at 70 and 80C
Experimental approaches to evaluate cellular response to Potassium limitation. For this purpose, a series of isogenic strains derived from BY4741 and lacking one (TRK1 or TRK2) or both TRK genes encoding specific potassium uptake systems was constructed using the homologous recombination and Cre-lox system.
Submitter: Simon Borger
Studies: Analysis of proton and potassium fluxes, Experimental approaches to determine the dependence of volume, pH and me..., Ion Flux Changes, Key Cell-Physiological Parameters, Long Term Metabolomic Profile, Proteomic Studies, Pysiological Model, Transcriptional Profile
Assays: 2D-Gel Electrophoresis, Ammonium fluxes, External Potassium Concentration, External pH changes, HPLC-MS, How does internal potassium change (/decrease) during several hours of p..., How starvation affect protein content in yeast cells, LacZ Reporters, Membrane Potential, NMR, Potassium fluxes, Protein Concentration, Protein Identification - MS, Proton fluxes, RT-PCR, Stable membrane potential, Stable pH, Stable potassium concentration, Stable volume, Time Course Micro Array Experiment, Time courses of the internal pH changes, Volume determination during starvation at different times.
Challenge: Comparative analyses, as demonstrated by comparative genomics and bioinformatics, are extremely powerful for (i) transfer of information from (experimentally) well-studied organisms to the other organisms, and (ii) when coupled to functional and phenotypic information, insight in the relative importance of components to the observed differences and simalities. The central principle of this proposal is that important aspects of the functional differences between organisms derive not ...
Submitter: Martijn Bekker
Studies: Comparative modeling and phosphate dependence flux distributions and glu..., Kinetics of L-lactate dehydrogenase from S. pyogenes, E. faecalis and L...., Reconstructing the metabolic pathways of S. pyogenes and E. faecalis fro..., Study of the physiological characterization of three lactic acid bacteri...
Assays: BIOLOG substrate utilization assay, Genome-Scale Model Enterococcus faecalis V583, Genome-scale model of Streptococcus pyogenes, Global sensitivity analysis, Glucose pulsed L. lactis, Glucose pulsed S. pyogenes, Kinetics of L-lactate dehydrogenase from L. lactis, Kinetics of L-lactate dehydrogenase from S. pyogenes, E. faecalis, and L..., Maximal specific growth rates of the three lactic acid bacteria and thei..., Model of L. lactis glycolysis, Physiological characterization of Lactic acid bacteria grown in C-limite..., Regulation of the activity of lactate dehydrogenases from four lactic ac...
Investigation of dynamics of the central metabolism (glycolysis, PPP, anaplerotic reactions, purines) of yeast Saccharomyces cerevisiae in anaerobic conditions
Submitter: Maksim Zakhartsev
Studies: Metabolic perturbation of the steady state culture by glucose pulse
Assays: Biomass weight during glucose pulse, Cellular size and granularity during glucose pulse, Dynamics of extracellular metabolites during glucose pulse, Dynamics of intracellular metabolites during glucose pulse, Dynamics of macromolecules during glucose pulse, MOSES: dynamic model of glucose pulse
Steady state metabolic fluxes and metabolite concentrations of yeast Saccharomyces cerevisiae in anaerobic chemostat at D=0.1 h-1
Submitter: Maksim Zakhartsev
Studies: Steady state concentrations of metabolites in yeast Saccharomyces cerevi..., Steady state fluxes in yeast Saccharomyces cerevisiae in anaerobic chemo...
Assays: Steady state concentrations of extracellular metabolites in yeast Saccha..., Steady state concentrations of intracellular metabolites in yeast Saccha..., Steady state extracellular fluxes in anaerobic yeast Saccharomyces cerev...
Bacillus subtilis was subjected to various stress conditions like high temperature(57°C), low temperature(16°C), high osmalarity(1.2M NaCl). The above mentioned stress conditions are again split into two different types as 'continuous stress condition' and 'sudden shock'. All the conditions were then done in biological triplicates. Transcriptome for these samples was then analysed with Nimblegen Tiling array.
Submitter: Praveen kumar Sappa
Studies: Transcriptome analysis of glucose starvation in B. subtilis, Transcriptome of continuously stressed B. subtilis, Transcriptome of shocked B. subtilis cells
Assays: Tiling Array analysis of glucose strarved B. subtilis cells, Tiling Array analysis of shocked B. subtilis cells, Tiling array analysis of continuous growth stress conditions in SMM
Cellular parameters of strains lacking both TRK1 and TRK2 genes.
Submitter: Falko Krause
Studies: Bioinformatic studies, Current-voltage relation, Genetic analysis, Key Cell-Physiological Parameters of TRK1,2 Transport Systems Investiga..., Kinetic properties of Trk, Promotor Anaysis, Proteomic analysis, Transcriptional Profile, Transcriptomic Profiling of 14-3-3 Mutants
Assays: 2D Gel Analysis, Current voltage relation for different external KCl, Current-voltage relation for different internal potassium, Describing of membrane potential changes in response to proton fluxes., Determination of kinetic properties based on MIFE flux data and measurem..., In silico Promotor Anaysis, Insilico Promotor Anaysis, Interaction Database Analysis, Internal pH, Membrane Potential, Modelling of the Trk-current, Potassium Concentration, Protein Concentration, Volume
Investigation of the role of 14-3-3 proteins in the S. cerevisiae cation homeostasis
Submitter: Paul Heusden
Studies: Role of 14-3-3 proteins in the localization of proteins involved in cati...
Assays: No Assays
Experimental approaches to study the mechanism and ions involved in potassium uptake after long term potassium starvation.
Properties of cells lacking the NHA1 gene.
This investigation examines the effect of benzoic acid, a food preservative, on the ATP levels of yeast cells.
Submitter: Martin Valachovic
Studies: ATP levels after benzoic acid pretreatments, ATP levels under 10 mM benzoic acid stress, ATP levels under 30 mM and 50 mM benzoic acid stress, Cell survival under different benzoic acid concentrations, Test different ATP extraction protocols and conditions
Assays: ATP measurement under 10mM benzoic acid stress, ATP measurement under 30mM benzoic acid stress, ATP measurement under 50mM benzoic acid stress, Compare ATP extraction methods
Submitter: Christina Döring
Studies: Effect of pH on the metabolome, Effect of pH on the proteome, Effect of pH upon the transcriptome, Identification of clusters of co-regulated and anti-regulated genes, Modelling the effect of pH on the metabolic shift
Assays: Comparison of the proteome between pH 5.7 (acidogenesis) and pH 4.5 (sol..., Comparison of the transcriptome between pH 5.7 (acidogenesis) and pH 4.5..., Comparison of the transcriptome between pH 5.8 (acidogenesis) and pH 4.5..., Identification of dynamically similar transcript profiles, Steady state study of the effect of gene regulation on yields of end-pro..., Study of the end products of the acidogenesis and solventogenesis pathways, Time-dependent simulations
Handling and manipulation of S. pneumoniae using molecular, cell biological and genetic tools.
Submitter: Jan-Willem Veening
Studies: Automated time-lapse microscopy, Chromosome segregation in S. pneumoniae, Investigation of bacterial transcription fidelity and processivity, The role of transcription factor GreA in transcription fidelity and proc...
Assays: Kinetics of misincorporation and proofreading by bacterial RNA polymerase, Live Cell Imaging of Bacillus subtilis and Streptococcus pneumoniae usin..., ParB-GFP ChIP on chip, RNA-Seq
The aim of this project is to develop a detailed kinetic model of the CcpA-dependent regulatory network, the key regulon of flux regulation in B. subtilis. Thereby involved are more than 300 genes e.g. catabolism, overflow metabolism, the TCA cycle and amino acid anabolism which are regulated via carbon catabolite regulation (CCR)
High salinity chemostat cultivation, multiomics sampling (proteome, transcriptome, metabolome, fluxome) and modelling of carbon core metabolism of Bacillus subtilis 168.
Submitter: Sandra Maass
Studies: B. subtilis_SysMo2_Chemostat_growthrate-salt, Fluxome analysis of Bacillus subtilis 168 under osmotic stress
Assays: 13C Metabolic Flux Analysis of Bacillus subtilis 168 in continuous high-..., Absolute quantification of proteins by the AQUA-technology, Absolute quantification of proteins using QconCAT technology, Relative quantification of proteins by metabolic labeling, Transcriptome data for chemostat cultivated samples, extracellular metabolites, intracellular metabolites
