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Li Z, Zhu Y, Zhang W, Mu W. Rcs signal transduction system in Escherichia coli: Composition, related functions, regulatory mechanism, and applications. Microbiol Res 2024; 285:127783. [PMID: 38795407 DOI: 10.1016/j.micres.2024.127783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/20/2024] [Accepted: 05/22/2024] [Indexed: 05/28/2024]
Abstract
The regulator of capsule synthesis (Rcs) system, an atypical two-component system prevalent in numerous gram-negative bacteria, serves as a sophisticated regulatory phosphorylation cascade mechanism. It plays a pivotal role in perceiving environmental stress and regulating the expression of downstream genes to ensure host survival. During the signaling transduction process, various proteins participate in phosphorylation to further modulate signal inputs and outputs. Although the structure of core proteins related to the Rcs system has been partially well-defined, and two models have been proposed to elucidate the intricate molecular mechanisms underlying signal sensing, a systematic characterization of the signal transduction process of the Rcs system remains challenging. Furthermore, exploring its corresponding regulator outputs is also unremitting. This review aimed to shed light on the regulation of bacterial virulence by the Rcs system. Moreover, with the assistance of the Rcs system, biosynthesis technology has developed high-value target production. Additionally, via this review, we propose designing chimeric Rcs biosensor systems to expand their application as synthesis tools. Finally, unsolved challenges are highlighted to provide the basic direction for future development of the Rcs system.
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Affiliation(s)
- Zeyu Li
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Yingying Zhu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi, Jiangsu 214122, China.
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Liu W, Peng J, Zou S, Xu L, Cheng H, Wang Y, Chen Z, Zhou H. Regulation on Pathway Metabolic Fluxes to Enhance Colanic Acid Production in Escherichia coli. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:13857-13868. [PMID: 37688786 DOI: 10.1021/acs.jafc.3c05046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/11/2023]
Abstract
Colanic acid (CA) is a natural polysaccharide macromolecule with rich and unique biological properties and is a promising candidate for use in food and cosmetics. To date, the efficient biosynthesis of CA and the influence of product accumulation on the strains used have yet to be precisely investigated. Herein, bottlenecks in the CA metabolic pathway were untangled by finely regulating the expression of manA, cpsG, fcl, and rcsA. Engineered strains produced CA at >1 g/L in shake flasks without dependence on cold temperatures, and it was verified in a 1 L bioreactor with a titer up to 18.64 g/L within 24 h. The accumulation of CA caused a decrease in the saturated fatty acid content (represented by C16:0 and C18:0) in the cell membrane. This study demonstrated pathway engineering for efficient CA production in cell factories and provided insights into the barriers and solutions faced in the biosynthesis of natural products.
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Affiliation(s)
- Wenxian Liu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Jing Peng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Sini Zou
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Liting Xu
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China
| | - Haina Cheng
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan 410083, P. R. China
| | - Yuguang Wang
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan 410083, P. R. China
| | - Zhu Chen
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan 410083, P. R. China
| | - Hongbo Zhou
- School of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, P. R. China
- Key Laboratory of Biometallurgy of Ministry of Education, Central South University, Changsha, Hunan 410083, P. R. China
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Wu J, Huang M, Zhan Y, Liu M, Hu X, Wu Y, Qiao J, Wang Z, Li H, Wang J, Wang X. Regulating Cardiolipin Biosynthesis for Efficient Production of Colanic Acid in Escherichia coli. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023. [PMID: 37235531 DOI: 10.1021/acs.jafc.3c01414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Colanic acid has broad application prospects in the food and healthcare market due to its excellent physical properties and biological activities. In this study, we discovered that colonic acid production in Escherichia coli could be enhanced by regulating cardiolipin biosynthesis. Single deletion of clsA, clsB, or clsC related to cardiolipin biosynthesis in E. coli MG1655 only slightly increased colonic acid production, but double or triple deletion of these three genes in E. coli MG1655 increased colonic acid production up to 2.48-fold. Previously, we have discovered that truncating lipopolysaccharide by deletion of the waaLUZYROBSPGQ gene cluster and enhancing RcsA by deletion of genes lon and hns can increase colonic acid production in E. coli. Therefore, these genes together with clsA, clsB, or/and clsC were deleted in E. coli, and all the resulting mutants showed increased colonic acid production. The best colonic acid production was observed in the mutant WWM16, which is 126-fold higher than in the control MG1655. To further improve colonic acid production, the genes rcsA and rcsD1-466 were overexpressed in WWM16, and the resulting recombinant E. coli WWM16/pWADT could produce 44.9 g/L colonic acid, which is the highest titer reported to date.
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Affiliation(s)
- Jiaxin Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Ming Huang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Yi Zhan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Minmin Liu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Xiaoqing Hu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
| | - Yuanming Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Jun Qiao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Zhen Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Hedan Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Jianli Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
| | - Xiaoyuan Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, Jiangnan University, Wuxi 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
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Production of colanic acid hydrolysate and its use in the production of fucosylated oligosaccharides by engineered Saccharomyces cerevisiae. Process Biochem 2022. [DOI: 10.1016/j.procbio.2022.10.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhan Y, Qiao J, Chen S, Dong X, Wu Y, Wang Z, Wang X. Metabolic Engineering for Overproduction of Colanic Acid in Escherichia coli Mutant with Short Lipopolysaccharide. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:8351-8364. [PMID: 35773212 DOI: 10.1021/acs.jafc.2c03053] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Colanic acid is a major exopolysaccharide existing in most Enterobacteriaceae when exposed to an extreme environment. Colanic acid possesses excellent physical properties and biological activities, which makes it a candidate in the food and healthcare market. Previous strategies for colanic acid overproduction in E. coli mainly focus on removing the negative regulator on colanic acid biosynthesis or overexpressing the rcsA gene to up-regulate the cps operon. In this study, modifications in metabolic pathways were implemented in E. coli mutant strains with shortened lipopolysaccharides to improve colanic acid production. First, ackA was deleted to remove the byproduct acetate and the effect of accumulated acetyl-phosphate on colanic acid production was investigated. Second, 11 genes responsible for O-antigen synthesis were deleted to reduce its competition for glucose-1-phosphate and UDP-galactose with colanic acid production. Third, uppS was overexpressed to supply lipid carriers for synthesizing a colanic acid repeat unit. Colanic acid production in the final engineered strain WZM008/pTrcS reached 11.68 g/L in a 2.0 L bioreactor, 3.54 times the colanic acid production by the WQM001 strain. The results provide insights for further engineering E. coli to maximize CA production.
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Affiliation(s)
- Yi Zhan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Jun Qiao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Shanshan Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xiaofei Dong
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Yuanming Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zhen Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xiaoyuan Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
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