The figure contains information necessary to understand the mathematical model of experiments in BSA115. In these experiments sigB response is artificially initiated by the addition of IPTG while sigB is downstream of a Pspac promoter. The figure shows a flow-chart diagram that combines three hypotheses to explain experiments. It contains the ODEs and the fit of the respective models to the data.
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Created: 2nd Feb 2011 at 16:42
Last updated: 2nd May 2012 at 11:49
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Version 1 (earliest) Created 2nd Feb 2011 at 16:42 by Ulf Liebal
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Projects: BaCell-SysMO
Institutions: University of Rostock
Expertise: Mathematical modelling, Bacillus subtilis, Deterministic modelling of gene regulation networks, stress responses, Systems Biology, sensitivity analysis, Dynamics and Control of Biological Networks, Parameter estimation
Tools: Biochemistry, Computational and theoretical biology, ODE, Matlab, linux, Stochastic models, Deterministic models, Dynamic modelling
Modelling of the general stress response activation cascade of sigB in B. subtilis in response to starvation.
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/
BaCell-SysMO 2 Modelling carbon core metabolism in Bacillus subtilis – Exploring the contribution of protein complexes in core carbon and nitrogen metabolism.
Bacillus subtilis is a prime model organism for systems biology approaches because it is one of the most advanced models for functional genomics. Furthermore, comprehensive information on cell and molecular biology, physiology and genetics is available and the European Bacillus community (BACELL) has a well-established reputation for applying ...
Programme: SysMO
Public web page: http://www.sysmo.net/index.php?index=53
Organisms: Bacillus subtilis
The objective of this project is an integrated understanding the metabolic, proteomic and genetic network that controls the transition from growth to glucose starvation. This transition is a fundamental ecophysiological response that serves as a scientific model for environmental signal integration and is pivotal for industrial fermentations of Bacillus that occur predominantly under nutrient starvation.
Keywords: Glucose starvation, Transcriptomics, Proteomics, Metabolomics,Bacillus subtilis,
Submitter: Praveen kumar Sappa
Studies: B. subtilis Transcription Factor Competition, Batchfermentation exp-starv01_090204, Biphase Batch Fermentation(2009/02/04), Controlled sigmaB induction in shake flask, Transition to starvation in shake flask
Assays: 2D-gelbased analysis of intracellular proteins, Absolute quantification of proteins by the AQUA-technology, B. subtilis Transcription Factor Competition - theoretical interpretation, B. subtilis Transcription Factor Competition - theoretical interpretation, Fermentation-BM5_SysMo, Gene expression(Transcriptome), IPTG induction of sigmaB in BSA115, IPTG induction of sigmaB in BSA115, Relative quantification of proteins by metabolic labeling, Stressosome activation dynamics, metabolome-LCMS
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In this kind of studies sigmaB stress response is induced by the addition of artificial inducers of sigmaB. For example simgaB is downstream of a Pspac promoter and induced by the addition of IPTG. A ctc::lacZ reporter gene is used to monitor sigmaB activity.
Submitter: Ulf Liebal
Investigation: The transition from growing to non-growing Baci...
Assays: IPTG induction of sigmaB in BSA115, IPTG induction of sigmaB in BSA115, Stressosome activation dynamics
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We use BSA115 strain which lacks RsbU and RsbW proteins. Therefore, there is limited post-transcriptional regulation of sigmaB activity.
There occurs an unexpected drop in the beta-Gal activity after sigB induction. This modelling effort aims to clarify the reasons.
Submitter: Ulf Liebal
Biological problem addressed: Gene Expression
Investigation: The transition from growing to non-growing Baci...
Organisms: Bacillus subtilis : 168 (wild-type / wild-type)
Models: BSA115 Post-transcriptional instability, BSA115-lacz-synth, BSA115-sigB-adaptation, BSA115-transcription inhibition model
SOPs: No SOPs
Data files: 20090915_BSA115-IPTG-assay, Model-representations-BSA115-Experiments and 1 hidden item
Snapshots: No snapshots
Abstract (Expand)
Authors: , , , , Georg Homuth, ,
Date Published: 2012
Publication Type: Not specified
DOI: 10.1039/C2MB25031D
Citation: