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Modular Engineering of Biomass Degradation Pathways

Biosciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA
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Processes 2019, 7(4), 230; https://doi.org/10.3390/pr7040230
Received: 27 February 2019 / Revised: 12 April 2019 / Accepted: 15 April 2019 / Published: 23 April 2019
(This article belongs to the Special Issue Principles of Modular Design and Control in Complex Systems)
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Abstract

Production of fuels and chemicals from renewable lignocellulosic feedstocks is a promising alternative to petroleum-derived compounds. Due to the complexity of lignocellulosic feedstocks, microbial conversion of all potential substrates will require substantial metabolic engineering. Non-model microbes offer desirable physiological traits, but also increase the difficulty of heterologous pathway engineering and optimization. The development of modular design principles that allow metabolic pathways to be used in a variety of novel microbes with minimal strain-specific optimization will enable the rapid construction of microbes for commercial production of biofuels and bioproducts. In this review, we discuss variability of lignocellulosic feedstocks, pathways for catabolism of lignocellulose-derived compounds, challenges to heterologous engineering of catabolic pathways, and opportunities to apply modular pathway design. Implementation of these approaches will simplify the process of modifying non-model microbes to convert diverse lignocellulosic feedstocks. View Full-Text
Keywords: metabolic engineering; lignin valorization; lignocellulose; biofuels; hemicellulose metabolic engineering; lignin valorization; lignocellulose; biofuels; hemicellulose
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Chaves, J.E.; Presley, G.N.; Michener, J.K. Modular Engineering of Biomass Degradation Pathways. Processes 2019, 7, 230.

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