Journal
BMC BIOINFORMATICS
Volume 13, Issue -, Pages -Publisher
BMC
DOI: 10.1186/1471-2105-13-93
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Funding
- Japan Society for the Promotion of Science [23680030]
- Global COE Program of the Ministry of Education, Culture, Sports, Science and Technology of Japan
- JST, ALCA (Advanced Low Carbon Technology Research and Development Program)
- Grants-in-Aid for Scientific Research [23680030] Funding Source: KAKEN
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Background: Microorganisms are used as cell factories to produce valuable compounds in pharmaceuticals, biofuels, and other industrial processes. Incorporating heterologous metabolic pathways into well-characterized hosts is a major strategy for obtaining these target metabolites and improving productivity. However, selecting appropriate heterologous metabolic pathways for a host microorganism remains difficult owing to the complexity of metabolic networks. Hence, metabolic network design could benefit greatly from the availability of an in silico platform for heterologous pathway searching. Results: We developed an algorithm for finding feasible heterologous pathways by which nonnative target metabolites are produced by host microorganisms, using Escherichia coli, Corynebacterium glutamicum, and Saccharomyces cerevisiae as templates. Using this algorithm, we screened heterologous pathways for the production of all possible nonnative target metabolites contained within databases. We then assessed the feasibility of the target productions using flux balance analysis, by which we could identify target metabolites associated with maximum cellular growth rate. Conclusions: This in silico platform, designed for targeted searching of heterologous metabolic reactions, provides essential information for cell factory improvement.
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