identification of fadab complexes involved in fatty acid β-oxidation in streptomyces coelicolor and construction of a triacylglycerol overproducing strain

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2017
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Ranked #680 of 875 articles by views in journal of magnetic resonance (san diego, calif : 1997)

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Abstract
Oleaginous microorganisms represent possible platforms for the sustainable production of oleochemicals and biofuels due to their metabolic robustness and the possibility to be engineered. Streptomyces coelicolor is among the narrow group of prokaryotes capable of accumulating triacylglycerol (TAG) as carbon and energy reserve. Although the pathways for TAG biosynthesis in this organism have been widely addressed, the set of genes required for their breakdown have remained elusive so far. Here, we identified and characterized three gene clusters involved in the β-oxidation of fatty acids (FA). The role of each of the three different S. coelicolor FadAB proteins in FA catabolism was confirmed by complementation of an Escherichia coliΔfadBA mutant strain deficient in β-oxidation. In S. coelicolor, the expression profile of the three gene clusters showed variation related with the stage of growth and the presence of FA in media. Flux balance analyses using a corrected version of the current S. coelicolor metabolic model containing detailed TAG biosynthesis reactions suggested the relevance of the identified fadAB genes in the accumulation of TAG. Thus, through the construction and analysis of fadAB knockout mutant strains, we obtained an S. coelicolor mutant that showed a 4.3-fold increase in the TAG content compared to the wild type strain grown under the same culture conditions.
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menendez-bravo2017frontiersidentification Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Simón Menendez-Bravo;Julián Paganini;Claudio Avignone-Rossa;Hugo Gramajo;Ana Arabolaza
Journal journal of magnetic resonance (san diego, calif : 1997)
Year 2017
DOI
10.3389/fmicb.2017.01428
URL
http://journal.frontiersin.org/article/10.3389/fmicb.2017.01428/full
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