Ethylene-forming enzyme and bioethylene production

Biotechnology for Biofuels

Carrie Eckert²  Wu Xu³  Wei Xiong¹  Sean Lynch²  Justin Ungerer¹  Ling Tao¹  Ryan Gill²  Pin-Ching Maness¹  Jianping Yu¹ 

[1] Biosciences Center, National Renewable Energy Laboratory, 15013 Denver West Parkway, Golden, CO 80401, USA

[2] Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO 80309, USA

[3] Department of Chemistry, University of Louisiana at Lafayette, Lafayette, LA 70503, USA

关键词: Heterologous expression;    Mechanism;    Diversity;    Bioethylene;    Ethylene-forming enzyme;   

Others  :  793297
DOI  :  10.1186/1754-6834-7-33

 received in 2013-12-19, accepted in 2014-02-13,  发布年份 2014

【 摘 要 】

Worldwide, ethylene is the most produced organic compound. It serves as a building block for a wide variety of plastics, textiles, and chemicals, and a process has been developed for its conversion into liquid transportation fuels. Currently, commercial ethylene production involves steam cracking of fossil fuels, and is the highest CO₂-emitting process in the chemical industry. Therefore, there is great interest in developing technology for ethylene production from renewable resources including CO₂ and biomass. Ethylene is produced naturally by plants and some microbes that live with plants. One of the metabolic pathways used by microbes is via an ethylene-forming enzyme (EFE), which uses α-ketoglutarate and arginine as substrates. EFE is a promising biotechnology target because the expression of a single gene is sufficient for ethylene production in the absence of toxic intermediates. Here we present the first comprehensive review and analysis of EFE, including its discovery, sequence diversity, reaction mechanism, predicted involvement in diverse metabolic modes, heterologous expression, and requirements for harvesting of bioethylene. A number of knowledge gaps and factors that limit ethylene productivity are identified, as well as strategies that could guide future research directions.

【 授权许可】

   
2014 Eckert et al.; licensee BioMed Central Ltd.

【 图 表 】

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