Paradigm of engineering recalcitrant non-model microorganism with dominant metabolic pathway as a biorefinery chassis
Xiongying Yan,
Weiwei Bao,
Yalun Wu,
Chenyue Zhang,
Zhitao Mao,
Qianqian Yuan,
Zhousheng Hu,
Penghui He,
Qiqun Peng,
Mimi Hu,
Binan Geng,
Hongwu Ma,
Shouwen Chen,
Qiang Fei (feiqiang@xjtu.edu.cn),
Qiaoning He (qiaoninghe@hubu.edu.cn) and
Shihui Yang (shihui.yang@hubu.edu.cn)
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Xiongying Yan: Hubei University
Weiwei Bao: Hubei University
Yalun Wu: Hubei University
Chenyue Zhang: Xi’an Jiaotong University
Zhitao Mao: Chinese Academy of Sciences
Qianqian Yuan: Chinese Academy of Sciences
Zhousheng Hu: Hubei University
Penghui He: Hubei University
Qiqun Peng: Hubei University
Mimi Hu: Hubei University
Binan Geng: Hubei University
Hongwu Ma: Chinese Academy of Sciences
Shouwen Chen: Hubei University
Qiang Fei: Xi’an Jiaotong University
Qiaoning He: Hubei University
Shihui Yang: Hubei University
Nature Communications, 2024, vol. 15, issue 1, 1-15
Abstract:
Abstract The development and implementation of microbial chassis cells have profound impacts on circular economy. Non-model bacterium Zymomonas mobilis is an excellent chassis owing to its extraordinary industrial characteristics. Here, the genome-scale metabolic model iZM516 is improved and updated by integrating enzyme constraints to simulate the dynamics of flux distribution and guide pathway design. We show that the innate dominant ethanol pathway of Z. mobilis restricts the titer and rate of these biochemicals. A dominant-metabolism compromised intermediate-chassis (DMCI) strategy is then developed through introducing low toxicity but cofactor imbalanced 2,3-butanediol pathway, and a recombinant D-lactate producer is constructed to produce more than 140.92 g/L and 104.6 g/L D-lactate (yield > 0.97 g/g) from glucose and corncob residue hydrolysate, respectively. Additionally, techno-economic analysis (TEA) and life cycle assessment (LCA) demonstrate the commercialization feasibility and greenhouse gas reduction capability of lignocellulosic D-lactate. This work thus establishes a paradigm for engineering recalcitrant microorganisms as biorefinery chassis.
Date: 2024
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-54897-5
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DOI: 10.1038/s41467-024-54897-5
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