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Gilmour KA, Ghimire PS, Wright J, Haystead J, Dade-Robertson M, Zhang M, James P. Microbially induced calcium carbonate precipitation through CO 2 sequestration via an engineered Bacillus subtilis. Microb Cell Fact 2024; 23:168. [PMID: 38858761 PMCID: PMC11163794 DOI: 10.1186/s12934-024-02437-7] [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: 01/22/2024] [Accepted: 05/23/2024] [Indexed: 06/12/2024] Open
Abstract
BACKGROUND Microbially induced calcium carbonate precipitation has been extensively researched for geoengineering applications as well as diverse uses within the built environment. Bacteria play a crucial role in producing calcium carbonate minerals, via enzymes including carbonic anhydrase-an enzyme with the capability to hydrolyse CO2, commonly employed in carbon capture systems. This study describes previously uncharacterised carbonic anhydrase enzyme sequences capable of sequestering CO2 and subsequentially generating CaCO3 biominerals and suggests a route to produce carbon negative cementitious materials for the construction industry. RESULTS Here, Bacillus subtilis was engineered to recombinantly express previously uncharacterised carbonic anhydrase enzymes from Bacillus megaterium and used as a whole cell catalyst allowing this novel bacterium to sequester CO2 and convert it to calcium carbonate. A significant decrease in CO2 was observed from 3800 PPM to 820 PPM upon induction of carbonic anhydrase and minerals recovered from these experiments were identified as calcite and vaterite using X-ray diffraction. Further experiments mixed the use of this enzyme (as a cell free extract) with Sporosarcina pasteurii to increase mineral production whilst maintaining a comparable level of CO2 sequestration. CONCLUSION Recombinantly produced carbonic anhydrase successfully sequestered CO2 and converted it into calcium carbonate minerals using an engineered microbial system. Through this approach, a process to manufacture cementitious materials with carbon sequestration ability could be developed.
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Affiliation(s)
- Katie A Gilmour
- Living Construction Group, Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University at Newcastle, Newcastle, NE1 8ST, UK
| | - Prakriti Sharma Ghimire
- Living Construction Group, Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University at Newcastle, Newcastle, NE1 8ST, UK
| | - Jennifer Wright
- Living Construction Group, Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University at Newcastle, Newcastle, NE1 8ST, UK
- Hub for Biotechnology in the Built Environment, School of Architecture, Planning and Landscape, Newcastle University, Newcastle, NE1 7RU, UK
- Diosynth Biotechnologies, FUJIFILM, Billingham, TS23 1LH, UK
| | - Jamie Haystead
- Living Construction Group, Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University at Newcastle, Newcastle, NE1 8ST, UK
| | - Martyn Dade-Robertson
- Hub for Biotechnology in the Built Environment, School of Architecture, Planning and Landscape, Newcastle University, Newcastle, NE1 7RU, UK
- Living Construction Group, Hub for Biotechnology in the Built Environment, Department of Architecture and Built Environment, Northumbria University at Newcastle, Newcastle, NE1 8ST, UK
| | - Meng Zhang
- Living Construction Group, Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University at Newcastle, Newcastle, NE1 8ST, UK.
| | - Paul James
- Living Construction Group, Hub for Biotechnology in the Built Environment, Department of Applied Sciences, Northumbria University at Newcastle, Newcastle, NE1 8ST, UK.
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Synthesis and evaluation of new 2-oxo-1,2-dihydroquinoline-3-carboxamides as potent inhibitors against acetylcholinesterase enzyme. Med Chem Res 2022. [DOI: 10.1007/s00044-022-02922-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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