by-product formation rates and glucose uptake rates of mutants with linear electron transport chain at different aerobiosis levels
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Created: 19th May 2014 at 08:03
Last updated: 22nd Jul 2014 at 08:48
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Version 1 (earliest) Created 19th May 2014 at 08:03 by Katja Bettenbrock
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I am interested in the coupling of global regulation and metabolism in E. coli. To analyze this I construct and analyze defined mutant strains. These strains are characterized in bioreactor experiments of different types (batch, conti, pulse ...) and measurements on the level of metabolites, mRNA, and protein are applied. For all projects there are cooperation partners that use the data in modeling approaches either from the MPI Magdeburg or from the SUMO consortium.
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 ...
Projects: BaCell-SysMO, COSMIC, SUMO, KOSMOBAC, SysMO-LAB, PSYSMO, SCaRAB, MOSES, TRANSLUCENT, STREAM, SulfoSys, SysMO DB, SysMO Funders, SilicoTryp, Noisy-Strep
Web page: http://sysmo.net/
"Systems Understanding of Microbial Oxygen responses" (SUMO) investigates how Escherichia coli senses oxygen, or the associated changes in oxidation/reduction balance, via the Fnr and ArcA proteins, how these systems interact with other regulatory systems, and how the redox response of an E. coli population is generated from the responses of single cells. There are five sub-projects to determine system properties and behaviour and three sub-projects to employ different and complementary modelling ...
Programme: SysMO
Public web page: http://www.sysmo.net/index.php?index=55
Organisms: Escherichia coli, Escherichia coli K-12
The electron transport chain of E. coli is branched. Different NAD Dehydrogenases and terminal oxidases are known to be expressed at different oxygen availabilities. By deleting multiple genes mutant strains were constructed that posses a linear electron transport chain. These mutants were investigated in continous bioreactor experiments with limiting glucose and varying oxygen supply.
Submitter: Katja Bettenbrock
Studies: Analysis of Escherichia coli strains with linear respiratory chain
Assays: Determination of by-product formation and glucose uptake of mutants with..., Deternination of ArcA phosphroylation level in mutants with linear ETC a..., Gene expression analysis of mutants with linear electron transport chain...
Snapshots: No snapshots
A set of isogenic mutant strains was constructed which lack NADH Dehydrogenase I as well as two terminal oxidases, resulting in strains with linear respiratory chain. The different strains hence differ in the terminal oxidase and express either cytochrome bo, cytochrome bdI or cytochrome bdII. The different strains were cultivated in glucose-limited chemostats with defined low levels of oxygen supply. Biomass and by-product formation, gene expression and the phosphorylation state of the important ...
Submitter: Katja Bettenbrock
Investigation: Analysis of Escherichia coli with linear electr...
Assays: Determination of by-product formation and glucose uptake of mutants with..., Deternination of ArcA phosphroylation level in mutants with linear ETC a..., Gene expression analysis of mutants with linear electron transport chain...
Snapshots: No snapshots
Mutants with a linear respiratory chain consisting of NADH Dehydrogenase II and one of the terminal oxidases cytochrom bo, cytochrome bd I or cytochrome bd II were growth in chemostats with defined oxygen supply. The amounts of biomass formed and of acetate and formate produced were determined.
Submitter: Katja Bettenbrock
Assay type: Experimental Assay Type
Technology type: Chemostat Measurement
Investigation: Analysis of Escherichia coli with linear electr...
Organisms: No organisms
SOPs: Measurement of extracellular metabolites, SUMO chemostat conditions
Data files: ETCmutants_metabolites
Snapshots: No snapshots