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Open AccessJournal ArticleDOI

Quantitative prediction of cellular metabolism with constraint-based models: the COBRA Toolbox v2.0

TLDR
The constraint-based reconstruction and analysis toolbox as discussed by the authors is a software package running in the Matlab environment, which allows for quantitative prediction of cellular behavior using a constraintbased approach and allows predictive computations of both steady-state and dynamic optimal growth behavior, the effects of gene deletions, comprehensive robustness analyses, sampling the range of possible cellular metabolic states and the determination of network modules.
Abstract
The manner in which microorganisms utilize their metabolic processes can be predicted using constraint-based analysis of genome-scale metabolic networks. Herein, we present the constraint-based reconstruction and analysis toolbox, a software package running in the Matlab environment, which allows for quantitative prediction of cellular behavior using a constraint-based approach. Specifically, this software allows predictive computations of both steady-state and dynamic optimal growth behavior, the effects of gene deletions, comprehensive robustness analyses, sampling the range of possible cellular metabolic states and the determination of network modules. Functions enabling these calculations are included in the toolbox, allowing a user to input a genome-scale metabolic model distributed in Systems Biology Markup Language format and perform these calculations with just a few lines of code. The results are predictions of cellular behavior that have been verified as accurate in a growing body of research. After software installation, calculation time is minimal, allowing the user to focus on the interpretation of the computational results.

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Multi-tissue computational modeling analyzes pathophysiology of type 2 diabetes in MKR mice.

TL;DR: It is found out that branched-chain amino acids' degradation and fatty acids oxidation pathway is downregulated in T2DM MKR mice, using the first multi-tissue genome-scale model of all metabolic pathways in T1DM.
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Computational analysis of phenotypic space in heterologous polyketide biosynthesis--applications to Escherichia coli, Bacillus subtilis, and Saccharomyces cerevisiae.

TL;DR: Flux balance analysis on genome-scale models was applied to simulate cellular metabolism and 6-deoxyerythronolide B (the cyclized polyketide precursor to erythromycin) production in three common heterologous hosts and identified single and double gene-knockouts that resulted in increasedpolyketide production while maintaining cellular growth.
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In silico engineering of Pseudomonas metabolism reveals new biomarkers for increased biosurfactant production.

TL;DR: A substantial increase in synthesis of rhamnolipids is identified by the engineered model compared to the control model, which is expected to provide a versatile methodology for integrating multi-omics data for topological and functional analysis of P. putida toward maximization of biosurfactant production.
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The landscape of tiered regulation of breast cancer cell metabolism.

TL;DR: This study measures transcriptomic, proteomic, phospho-proteomic and fluxomics data in a breast cancer cell-line across three different growth conditions, and finds that the flux of predicted indirectly regulated reactions is strongly coupled toThe flux of the predicted directly regulated ones, uncovering a tiered hierarchical organization of breast Cancer cell metabolism.
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Systematic applications of metabolomics in metabolic engineering.

TL;DR: Some of the most common approaches for computational modeling of cell-wide metabolism, including constraint-based models, are reviewed, and current computational approaches that explicitly use metabolomics data are discussed.
References
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Journal ArticleDOI

Cytoscape: A Software Environment for Integrated Models of Biomolecular Interaction Networks

TL;DR: Several case studies of Cytoscape plug-ins are surveyed, including a search for interaction pathways correlating with changes in gene expression, a study of protein complexes involved in cellular recovery to DNA damage, inference of a combined physical/functional interaction network for Halobacterium, and an interface to detailed stochastic/kinetic gene regulatory models.
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KEGG: Kyoto Encyclopedia of Genes and Genomes

TL;DR: The Kyoto Encyclopedia of Genes and Genomes (KEGG) as discussed by the authors is a knowledge base for systematic analysis of gene functions in terms of the networks of genes and molecules.
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The KEGG resource for deciphering the genome

TL;DR: A knowledge-based approach for network prediction is developed, which is to predict, given a complete set of genes in the genome, the protein interaction networks that are responsible for various cellular processes.
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The systems biology markup language (SBML): a medium for representation and exchange of biochemical network models.

TL;DR: This work summarizes the Systems Biology Markup Language (SBML) Level 1, a free, open, XML-based format for representing biochemical reaction networks, a software-independent language for describing models common to research in many areas of computational biology.
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