Synthetic biology toolkit for engineering Cupriviadus necator H16 as a platform for CO2 valorization

Biotechnology for Biofuels

Haojie Pan¹  Jia Wang¹  Haoliang Wu¹  Zhongjian Li¹  Jiazhang Lian² 

[1] Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China;Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China;Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, 310027, Hangzhou, China;

关键词: Cupriviadus necator;    Ralstonia eutropha;    Synthetic biology;    Metabolic engineering;    CO conversion;    Biomanufacturing;   

DOI  :  10.1186/s13068-021-02063-0

来源: Springer

【 摘 要 】

BackgroundCO2 valorization is one of the effective methods to solve current environmental and energy problems, in which microbial electrosynthesis (MES) system has proved feasible and efficient. Cupriviadus necator (Ralstonia eutropha) H16, a model chemolithoautotroph, is a microbe of choice for CO2 conversion, especially with the ability to be employed in MES due to the presence of genes encoding [NiFe]-hydrogenases and all the Calvin–Benson–Basham cycle enzymes. The CO2 valorization strategy will make sense because the required hydrogen can be produced from renewable electricity independently of fossil fuels.Main bodyIn this review, synthetic biology toolkit for C. necator H16, including genetic engineering vectors, heterologous gene expression elements, platform strain and genome engineering, and transformation strategies, is firstly summarized. Then, the review discusses how to apply these tools to make C. necator H16 an efficient cell factory for converting CO2 to value-added products, with the examples of alcohols, fatty acids, and terpenoids. The review is concluded with the limitation of current genetic tools and perspectives on the development of more efficient and convenient methods as well as the extensive applications of C. necator H16.ConclusionsGreat progress has been made on genetic engineering toolkit and synthetic biology applications of C. necator H16. Nevertheless, more efforts are expected in the near future to engineer C. necator H16 as efficient cell factories for the conversion of CO2 to value-added products.

【 授权许可】

CC BY