Abstract
Fermentation and chemical methods for industrial cytidine diphosphate choline (CDP-choline) catalytic production both suffer from several disadvantages such as relatively low efficiency and productivity. To overcome these problems, we applied the concept of synthetic biology to develop a new one-pot multi-enzyme system to produce CDP-choline from orotic acid. Enzymes from different sources were selected and optimized as building blocks of the system, and parameters such as oxygen supply were also optimized. This system shows a titer of 37.6 ± 1.1 mM and a reaction rate of 1.6 mM L-1 h−1, both increase 66 % from traditional processes. It also has an efficiency of energy of 25.4%, improves 2-folds. This new one-pot CDP-choline-producing system has a potential for industrial use, and the procedure to design one-pot multi-enzyme system can be applied to build other one-pot system producing energy-rich compounds.
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Data Availability
The datasets used or analyzed during the current study are available from the corresponding author on reasonable request.
Abbreviations
- G-6-P :
-
Glucose 6-phosphate
- PRPP:
-
Phosphoribosyl pyrophosphate
- OMP:
-
Orotidine 5′-monophosphate
- UMP:
-
Uridine 5′-monophosphate
- UDP:
-
Uridine 5′-diphosphate
- UTP:
-
Uridine 5′-triphosphate
- CTP:
-
Cytidine 5′-triphosphate
- OPRT:
-
Orotate phosphoribosyltransferase
- ODC:
-
Orotidine-5′-phosphate decarboxylase
- UMK:
-
UMP kinase
- NDK:
-
NDP kinase
- CTPS:
-
CTP synthetase
- CKI:
-
Choline kinase
- CCT:
-
Choline-phosphate cytidylyltransferase
- EMP pathway:
-
Embden-Meyerhof-Parnas pathway
- PP pathway:
-
Pentose phosphate pathway
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This work was supported by the National High-Tech Research and Development Program of China (863) (2012AA021203), the National Basic Research Program of China (973) (2013CB733602), the Major Research Plan of the National Natural Science Foundation of China (21390204), the National Technology Support Program (2012BAI44G01), the National Natural Science Foundation of China, General Program (2137611), the Program for Changjiang Scholars and Innovative Research Team in university (IRT_14R28), the young investigator grant program of National Natural Science Foundation of China (21506097), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Chen Zheng, Rongxin Miao,Yingmiao Liu, Yang Cao, Dong Liu, Junzhi Wang, and Hanjie Ying .The manuscript was written by Chen Zheng and Rongxin Miao. All authors commented on previous versions of the manuscript. All authors have read and approved the final manuscript.
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Zheng, C., Miao, R., Liu, Y. et al. A Procedure to Design One-Pot Multi-enzyme System for Industrial CDP-Choline Production. Appl Biochem Biotechnol 193, 2769–2780 (2021). https://doi.org/10.1007/s12010-021-03564-2
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DOI: https://doi.org/10.1007/s12010-021-03564-2