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Wu J, Wu J, He RL, Hu L, Liu DF, Li WW. Modularized Engineering of Shewanella oneidensis MR-1 for Efficient and Directional Synthesis of 5-Aminolevulinic Acid. Metab Eng 2024; 83:206-215. [PMID: 38710300 DOI: 10.1016/j.ymben.2024.05.001] [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: 01/03/2024] [Revised: 04/13/2024] [Accepted: 05/03/2024] [Indexed: 05/08/2024]
Abstract
Shewanella oneidensis MR-1 has found widespread applications in pollutant transformation and bioenergy production, closely tied to its outstanding heme synthesis capabilities. However, this significant biosynthetic potential is still unexploited so far. Here, we turned this bacterium into a highly-efficient bio-factory for green synthesis of 5-Aminolevulinic Acid (5-ALA), an important chemical for broad applications in agriculture, medicine, and the food industries. The native C5 pathway genes of S. oneidensis was employed, together with the introduction of foreign anti-oxidation module, to establish the 5-ALA production module, resulting 87-fold higher 5-ALA yield and drastically enhanced tolerance than the wild type. Furthermore, the metabolic flux was regulated by using CRISPR interference and base editing techniques to suppress the competitive pathways to further improve the 5-ALA titer. The engineered strain exhibited 123-fold higher 5-ALA production capability than the wild type. This study not only provides an appealing new route for 5-ALA biosynthesis, but also presents a multi-dimensional modularized engineering strategy to broaden the application scope of S. oneidensis.
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Affiliation(s)
- Jie Wu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China; Institute of Advanced Technology, University of Science and Technology of China, Hefei, 230000, China
| | - Jing Wu
- School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, 230026, China
| | - Ru-Li He
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China; Institute of Advanced Technology, University of Science and Technology of China, Hefei, 230000, China
| | - Lan Hu
- School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, 230026, China
| | - Dong-Feng Liu
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China.
| | - Wen-Wei Li
- CAS Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science & Technology of China, Hefei, 230026, China; Institute of Advanced Technology, University of Science and Technology of China, Hefei, 230000, China; School of Life Sciences and Medical Center, University of Science and Technology of China, Hefei, 230026, China.
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Noori MT, Mansi, Sundriyal S, Shrivastav V, Giri BS, Holdynski M, Nogala W, Tiwari UK, Gupta B, Min B. Copper foam supported g-C 3N 4-metal-organic framework bacteria biohybrid cathode catalyst for CO 2 reduction in microbial electrosynthesis. Sci Rep 2023; 13:22741. [PMID: 38123583 PMCID: PMC10733401 DOI: 10.1038/s41598-023-49246-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
Microbial electrosynthesis (MES) presents a versatile approach for efficiently converting carbon dioxide (CO2) into valuable products. However, poor electron uptake by the microorganisms from the cathode severely limits the performance of MES. In this study, a graphitic carbon nitride (g-C3N4)-metal-organic framework (MOF) i.e. HKUST-1 composite was newly designed and synthesized as the cathode catalyst for MES operations. The physiochemical analysis such as X-ray diffraction, scanning electron microscopy (SEM), and X-ray fluorescence spectroscopy showed the successful synthesis of g-C3N4-HKUST-1, whereas electrochemical assessments revealed its enhanced kinetics for redox reactions. The g-C3N4-HKUST-1 composite displayed excellent biocompatibility to develop electroactive biohybrid catalyst for CO2 reduction. The MES with g-C3N4-HKUST-1 biohybrid demonstrated an excellent current uptake of 1.7 mA/cm2, which was noted higher as compared to the MES using g-C3N4 biohybrid (1.1 mA/cm2). Both the MESs could convert CO2 into acetic and isobutyric acid with a significantly higher yield of 0.46 g/L.d and 0.14 g/L.d respectively in MES with g-C3N4-HKUST-1 biohybrid and 0.27 g/L.d and 0.06 g/L.d, respectively in MES with g-C3N4 biohybrid. The findings of this study suggest that g-C3N4-HKUST-1 is a highly efficient catalytic material for biocathodes in MESs to significantly enhance the CO2 conversion.
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Affiliation(s)
- Md Tabish Noori
- Department of Environmental Science and Engineering, Kyung Hee University, Yongin, South Korea
| | - Mansi
- CSIR-Central Scientific Instrument Organisation (CSIR-CSIO), Chandigarh, 160030, India
| | - Shashank Sundriyal
- Regional Center of Advanced Technologies and Materials, The Czech Advanced Technology and Research Institute (CATRIN), Palacký University Olomouc, Šlechtitel ̊u 27, Olomouc, 779 00, Czech Republic
| | - Vishal Shrivastav
- Institute of Physical Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warszawa, Poland
| | - Balendu Sekhar Giri
- Sustainability Cluster, School of Advanced Engineering, UPES, Dehradun, Uttarakhand, 248007, India
| | - Marcin Holdynski
- Institute of Physical Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warszawa, Poland
| | - Wojciech Nogala
- Institute of Physical Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warszawa, Poland
| | - Umesh K Tiwari
- CSIR-Central Scientific Instrument Organisation (CSIR-CSIO), Chandigarh, 160030, India
| | - Bhavana Gupta
- Institute of Physical Chemistry Polish Academy of Sciences, Kasprzaka 44/52, 01-224, Warszawa, Poland.
| | - Booki Min
- Department of Environmental Science and Engineering, Kyung Hee University, Yongin, South Korea.
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Wang X, Zhang G, Jiao Y, Zhang Q, Chang JS, Lee DJ. Ferrous iron oxidation microflora from rust deposits improve the performance of bioelectrochemical system. BIORESOURCE TECHNOLOGY 2022; 364:128048. [PMID: 36191749 DOI: 10.1016/j.biortech.2022.128048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/25/2022] [Accepted: 09/26/2022] [Indexed: 06/16/2023]
Abstract
Ferric iron (Fe(III)) ions are efficient electron acceptor in bioelectrochemical systems (BESs). For the first time, this study applied the enriched Fe(II)-oxidizing microflora individually from rust deposits, aerobic sludge, or topsoil to catholyte to regenerate Fe(III) ions to boost BES operation. Among three microflora, the rust-microflora had the highest Fe2+ oxidation rate and the lowest Fe ion loss rate since Acidithiobacillus sp., Ferrovum sp., Rhodobacter sp., Sphingomonas sp., and others enriched it. The rust-seeded BES generated the maximum power density of 77.15 ± 1.62 Wm-3 at 15 ℃, 38.9 %, and 31.4 % higher than those in sludge and topsoil-seeded BES, respectively. The rust-microflora with enriched Fe(II)-oxidizing bacteria could enhance the performance of BES, reaching coulombic efficiencies of 98.2 ± 2.6 at reduced internal resistance (5.14 Ω), with 1.59 Ω by activation resistance and 0.77 Ω by diffusion resistance.
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Affiliation(s)
- Xiaoyan Wang
- School of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Guodong Zhang
- School of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Yan Jiao
- School of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Qi Zhang
- School of Resource and Environment, Qingdao Agricultural University, Qingdao 266109, China
| | - Jo-Shu Chang
- Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan; Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan
| | - Duu-Jong Lee
- Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tong, Hong Kong.
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