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Awadeen NA, Eltarahony M, Zaki S, Yousef A, El-Assar S, El-Shall H. Fungal carbonatogenesis process mediates zinc and chromium removal via statistically optimized carbonic anhydrase enzyme. Microb Cell Fact 2024; 23:236. [PMID: 39192338 DOI: 10.1186/s12934-024-02499-7] [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: 12/04/2023] [Accepted: 08/02/2024] [Indexed: 08/29/2024] Open
Abstract
INTRODUCTION With rapid elevation in population, urbanization and industrialization, the environment is exposed to uncontrolled discharge of effluents filled with broad-spectrum toxicity, persistence and long-distance transmission anthropogenic compounds, among them heavy metals. That put our ecosystem on the verge or at a stake of drastic ecological deterioration, which eventually adversely influence on public health. Therefore, this study employed marine fungal strain Rhodotorula sp. MZ312369 for Zn2+ and Cr6+ remediation using the promising calcium carbonate (CaCO3) bioprecipitation technique, for the first time. RESULTS Initially, Plackett-Burman design followed by central composite design were applied to optimize carbonic anhydrase enzyme (CA), which succeeded in enhancing its activity to 154 U/mL with 1.8-fold increase comparing to the basal conditions. The potentiality of our biofactory in remediating Zn2+ (50 ppm) and Cr6+ (400 ppm) was monitored through dynamic study of several parameters including microbial count, CA activity, CaCO3 weight, pH fluctuation, changing the soluble concentrations of Ca2+ along with Zn2+ and Cr6+. The results revealed that 9.23 × 107 ± 2.1 × 106 CFU/mL and 10.88 × 107 ± 2.5 × 106 CFU/mL of cells exhibited their maximum CA activity by 124.84 ± 1.24 and 140 ± 2.5 U/mL at 132 h for Zn2+ and Cr6+, respectively. Simultaneously, with pH increase to 9.5 ± 0.2, a complete removal for both metals was observed at 168 h; Ca2+ removal percentages recorded 78.99% and 85.06% for Zn2+ and Cr6+ remediating experiments, respectively. Further, the identity, elemental composition, functional structure and morphology of bioremediated precipitates were also examined via mineralogical analysis. EDX pattern showed the typical signals of C, O and Ca accompanying with Zn2+ and Cr6+ peaks. SEM micrographs depicted spindle, spherical and cubic shape bioliths with size range of 1.3 ± 0.5-23.7 ± 3.1 µm. Meanwhile, XRD difractigrams unveiled the prevalence of vaterite phase in remediated samples. Besides, FTIR profiles emphasized the presence of vaterite spectral peaks along with metals wavenumbers. CONCLUSION CA enzyme mediated Zn2+ and Cr6+ immobilization and encapsulation inside potent vaterite trap through microbial biomineralization process, which deemed as surrogate ecofriendly solution to mitigate heavy metals toxicity and restrict their mobility in soil and wastewater.
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Affiliation(s)
- Naira A Awadeen
- Microbiology Department, Faculty of Dentistry, Pharos University, Alexandria, Egypt
| | - Marwa Eltarahony
- Evironmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, 21934, Egypt.
| | - Sahar Zaki
- Evironmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, 21934, Egypt.
| | - Amany Yousef
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Samy El-Assar
- Department of Botany and Microbiology, Faculty of Science, Alexandria University, Alexandria, Egypt
| | - Hadeel El-Shall
- Evironmental Biotechnology Department, Genetic Engineering and Biotechnology Research Institute (GEBRI), City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City, Alexandria, 21934, Egypt
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Clarà Saracho A, Marek EJ. Uncovering the Dynamics of Urease and Carbonic Anhydrase Genes in Ureolysis, Carbon Dioxide Hydration, and Calcium Carbonate Precipitation. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:1199-1210. [PMID: 38173390 DOI: 10.1021/acs.est.3c06617] [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: 01/05/2024]
Abstract
The hydration of CO2 suffers from kinetic inefficiencies that make its natural trapping impractically sluggish. However, CO2-fixing carbonic anhydrases (CAs) remarkably accelerate its equilibration by 6 orders of magnitude and are, therefore, "ideal" catalysts. Notably, CA has been detected in ureolytic bacteria, suggesting its potential involvement in microbially induced carbonate precipitation (MICP), yet the dynamics of the urease (Ur) and CA genes remain poorly understood. Here, through the use of the ureolytic bacteriumSporosarcina pasteurii, we investigate the differing role of Ur and CA in ureolysis, CO2 hydration, and CaCO3 precipitation with increasing CO2(g) concentrations. We show that Ur gene up-regulation coincides with an increase in [HCO3-] following the hydration of CO2 to HCO3- by CA. Hence, CA physiologically promotes buffering, which enhances solubility trapping and affects the phase of the CaCO3 mineral formed. Understanding the role of CO2 hydration on the performance of ureolysis and CaCO3 precipitation provides essential new insights, required for the development of next-generation biocatalyzed CO2 trapping technologies.
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Affiliation(s)
- Alexandra Clarà Saracho
- Department of Civil, Architectural and Environmental Engineering, The University of Texas at Austin, 301 E Dean Keeton St C1700, Austin, Texas 78712, United States
| | - Ewa J Marek
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Dr, Cambridge CB3 0AS, United Kingdom
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Li T, Zhang H, Tan X, Zhang R, Wu F, Yu Z, Su B. New insights into Saccharomyces cerevisiae induced calcium carbonate precipitation. Front Bioeng Biotechnol 2023; 11:1261205. [PMID: 37720316 PMCID: PMC10500597 DOI: 10.3389/fbioe.2023.1261205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 08/22/2023] [Indexed: 09/19/2023] Open
Abstract
Our previous study reported that Saccharomyces cerevisiae could induce calcium carbonate (CaCO3) precipitation, but the associated mechanism was unclear. In the present study, Saccharomyces cerevisiae was cultured under various conditions, including the presence of different organic acids and initial pH, and the yields of CaCO3 formation induced by the different organic acids were compared. The metabolism of organic acid by the metabolites of S. cerevisiae was also assessed in vitro. The SEM-EDS and XRD results showed that only acetate acid, pyruvic acid, and α-ketoglutaric acid could induce CaCO3 formation, and the weight order of the produced CaCO3 was pyruvic acid, acetate acid, α-ketoglutaric acid. In addition, the presence of only yeast metabolites and the initial neutral or alkaline environment also limited the CaCO3 formation. These results illustrated that organic acid oxidation intracellularly, especially the tricarboxylic acid cycle, was the major mechanism, and the CaCO3 yield was related to the amount of CO2 produced by the metabolism of organic acids. These findings will deepen the knowledge of the mineralization capacity of S. cerevisiae and provide a theoretical basis for the future application of yeast as an alternative microorganism in MICP.
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Affiliation(s)
- Tianxiao Li
- Dunhuang Academy, The Conservation Institute, Dunhuang, China
- National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites, Dunhuang, China
- Joint International Research Laboratory of Environmental and Social Archaeology, Shandong University, Qingdao, China
- Institute of Cultural Heritage, Shandong University, Qingdao, China
| | - Huabing Zhang
- Dunhuang Academy, The Conservation Institute, Dunhuang, China
- National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites, Dunhuang, China
| | - Xiang Tan
- Dunhuang Academy, The Conservation Institute, Dunhuang, China
- National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites, Dunhuang, China
| | - Rui Zhang
- Dunhuang Academy, The Conservation Institute, Dunhuang, China
- National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites, Dunhuang, China
| | - Fasi Wu
- Dunhuang Academy, The Conservation Institute, Dunhuang, China
- National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites, Dunhuang, China
| | - Zongren Yu
- Dunhuang Academy, The Conservation Institute, Dunhuang, China
- National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites, Dunhuang, China
| | - Bomin Su
- Dunhuang Academy, The Conservation Institute, Dunhuang, China
- National Research Center for Conservation of Ancient Wall Paintings and Earthen Sites, Dunhuang, China
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Hsieh CJ, Hu CJ, Yu CY. Biomimetic Carbon Sequestration and Cyanate Detoxification Using Heat-Purified Carbonic Anhydrase from Sulfurihydrogenibium yellowstonense. Biomimetics (Basel) 2023; 8:365. [PMID: 37622970 PMCID: PMC10452739 DOI: 10.3390/biomimetics8040365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 08/10/2023] [Accepted: 08/12/2023] [Indexed: 08/26/2023] Open
Abstract
The reaction condition for purifying carbonic anhydrase from Sulfurihydrogenibium yellowstonense (SspCA) by direct heating without prior cell lysis was optimized; heating at 70 °C for 5 min resulted in the highest total activity of 23,460 WAU (Wilbur-Anderson unit) from a 50 mL culture. Heat-purified SspCA was examined for its capability to increase the rate of the mineralization of CO2; compared with an uncatalyzed control, the onset time of CaCO3 formation was shortened by up to 71%. Cyanase can be used to degrade toxic cyanate; however, one of the limitations of this biomimetic process is that the reaction needs HCO3- as a substrate. Heat-purified SspCA was combined with heat-purified cyanase from Thermomyces lanuginosus to alleviate the HCO3- dependence; in industrial wastewater, the HCO3- required was reduced by 50% when 0.75 WAU of SspCA was added. Heat-purified SspCA is stable at 4 °C; 88% of the initial activity was retained for up to five weeks. Partially purified SspCA can be obtained with ease and applied to a variety of applications.
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Affiliation(s)
- Chia-Jung Hsieh
- Department of Chemical Engineering and Biotechnology, Tatung University, Taipei 104327, Taiwan;
| | - Chia-Jung Hu
- Department of Mechanical and Materials Engineering, Tatung University, Taipei 104327, Taiwan;
| | - Chi-Yang Yu
- Department of Chemical Engineering and Biotechnology, Tatung University, Taipei 104327, Taiwan;
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Kumar S, Biswas S, Deshpande PA. Computational analysis of the effect of Gly100Ala mutation on the thermostability of SazCA. J Biomol Struct Dyn 2023; 41:12363-12371. [PMID: 36744540 DOI: 10.1080/07391102.2023.2175259] [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: 09/28/2022] [Accepted: 01/02/2023] [Indexed: 02/07/2023]
Abstract
Maintaining the protein stability upon mutation is a challenging task in protein engineering. In the present computational study, we induced a single point Gly100Ala mutation in SazCA and examined the factors governing the stability and flexibility of the mutated form, and compared it to that of the wildtype using molecular dynamics simulations. We observed higher structural stability and lesser residual mobility in the mutated SazCA. Improved H-bonding due to Gly100Ala was observed. Ala100 was responsible for the increased helical contents in the mutated SazCA while Gly100 compromised the secondary structure contents in the wildtype. A strong network of salt bridges and high local ordering of the solvent molecules at the protein surface contributed to the enhanced stability of the mutated protein. Our simulations conclusively highlight Gly100Ala mutation as a step towards designing a more robust and thermostable SazCA.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shashi Kumar
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Soumya Biswas
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Parag A Deshpande
- Quantum and Molecular Engineering Laboratory, Department of Chemical Engineering, Indian Institute of Technology Kharagpur, Kharagpur, India
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6
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Zhu Y, Liu Y, Ai M, Jia X. Surface display of carbonic anhydrase on Escherichia coli for CO 2 capture and mineralization. Synth Syst Biotechnol 2022; 7:460-473. [PMID: 34938905 PMCID: PMC8654698 DOI: 10.1016/j.synbio.2021.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2021] [Revised: 11/25/2021] [Accepted: 11/28/2021] [Indexed: 11/25/2022] Open
Abstract
Mineralization catalyzed by carbonic anhydrase (CA) is one of the most promising technologies for capturing CO2. In this work, Escherichia coli BL21(DE3) was used as the host, and the N-terminus of ice nucleation protein (INPN) was used as the carrier protein. Different fusion patterns and vectors were used to construct CA surface display systems for α-carbonic anhydrase (HPCA) from Helicobacter pylori 26695 and α-carbonic anhydrase (SazCA) from Sulfurihydrogenibium azorense. The surface display system in which HPCA was fused with INPN via a flexible linker and intermediate repeat sequences showed higher whole-cell enzyme activity, while the enzyme activity of the SazCA expression system was significantly higher than that of the HPCA expression system. The pET22b vector with the signal peptide PelB was more suitable for the cell surface display of SazCA. Cell fractionation and western-blot analysis indicated that SazCA and INPN were successfully anchored on the cell's outer membrane as a fusion protein. The enzyme activity of the surface display strain E-22b-IRLS (11.43 U·mL-1OD600 -1) was significantly higher than that of the intracellular expression strain E-22b-S (8.355 U·mL-1OD600 -1) under optimized induction conditions. Compared with free SazCA, E-22b-IRLS had higher thermal and pH stability. The long-term stability of SazCA was also significantly improved by surface display. When the engineered strain and free enzyme were used for CO2 mineralization, the amount of CaCO3 deposition catalyzed by the strain E-22b-IRLS on the surface (241 mg) was similar to that of the free SazCA and was significantly higher than the intracellular expression strain E-22b-S (173 mg). These results demonstrate that the SazCA surface display strain can serve as a whole-cell biocatalyst for CO2 capture and mineralization.
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Affiliation(s)
- Yinzhuang Zhu
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China
| | - Yaru Liu
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China
| | - Mingmei Ai
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China
| | - Xiaoqiang Jia
- Department of Biochemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, PR China
- Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering (MOE), School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, PR China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, PR China
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7
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Zhuang X, Zhang Y, Xiao AF, Zhang A, Fang B. Applications of Synthetic Biotechnology on Carbon Neutrality Research: A Review on Electrically Driven Microbial and Enzyme Engineering. Front Bioeng Biotechnol 2022; 10:826008. [PMID: 35145960 PMCID: PMC8822124 DOI: 10.3389/fbioe.2022.826008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/04/2022] [Indexed: 12/26/2022] Open
Abstract
With the advancement of science, technology, and productivity, the rapid development of industrial production, transportation, and the exploitation of fossil fuels has gradually led to the accumulation of greenhouse gases and deterioration of global warming. Carbon neutrality is a balance between absorption and emissions achieved by minimizing carbon dioxide (CO2) emissions from human social productive activity through a series of initiatives, including energy substitution and energy efficiency improvement. Then CO2 was offset through forest carbon sequestration and captured at last. Therefore, efficiently reducing CO2 emissions and enhancing CO2 capture are a matter of great urgency. Because many species have the natural CO2 capture properties, more and more scientists focus their attention on developing the biological carbon sequestration technique and further combine with synthetic biotechnology and electricity. In this article, the advances of the synthetic biotechnology method for the most promising organisms were reviewed, such as cyanobacteria, Escherichia coli, and yeast, in which the metabolic pathways were reconstructed to enhance the efficiency of CO2 capture and product synthesis. Furthermore, the electrically driven microbial and enzyme engineering processes are also summarized, in which the critical role and principle of electricity in the process of CO2 capture are canvassed. This review provides detailed summary and analysis of CO2 capture through synthetic biotechnology, which also pave the way for implementing electrically driven combined strategies.
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Affiliation(s)
- Xiaoyan Zhuang
- College of Food and Biology Engineering, Jimei University, Xiamen, China
| | - Yonghui Zhang
- College of Food and Biology Engineering, Jimei University, Xiamen, China
| | - An-Feng Xiao
- College of Food and Biology Engineering, Jimei University, Xiamen, China
| | - Aihui Zhang
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Baishan Fang
- College of Food and Biology Engineering, Jimei University, Xiamen, China
- Department of Chemical and Biochemical Engineering, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
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8
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Immobilization of carbonic anhydrase for CO2 capture and its industrial implementation: A review. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101475] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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9
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Immobilization of genetically engineered whole-cell biocatalysts with periplasmic carbonic anhydrase in polyurethane foam for enzymatic CO2 capture and utilization. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.101172] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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10
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Jo BH, Moon H, Cha HJ. Engineering the genetic components of a whole‐cell catalyst for improved enzymatic CO
2
capture and utilization. Biotechnol Bioeng 2019; 117:39-48. [DOI: 10.1002/bit.27175] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 09/08/2019] [Accepted: 09/13/2019] [Indexed: 12/24/2022]
Affiliation(s)
- Byung Hoon Jo
- Division of Life Science and Research Institute of Life ScienceGyeongsang National UniversityJinju Korea
| | - Hyukjoon Moon
- School of Interdisciplinary Bioscience and BioengineeringPohang University of Science and TechnologyPohang Korea
| | - Hyung Joon Cha
- School of Interdisciplinary Bioscience and BioengineeringPohang University of Science and TechnologyPohang Korea
- Department of Chemical EngineeringPohang University of Science and TechnologyPohang Korea
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11
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Asadi V, Kardanpour R, Tangestaninejad S, Moghadam M, Mirkhani V, Mohammadpoor-Baltork I. Novel bovine carbonic anhydrase encapsulated in a metal–organic framework: a new platform for biomimetic sequestration of CO2. RSC Adv 2019; 9:28460-28469. [PMID: 35529640 PMCID: PMC9071054 DOI: 10.1039/c9ra04603h] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 08/12/2019] [Indexed: 11/21/2022] Open
Abstract
In this work, maximizing the utilization of CO2 and its precipitation as CaCO3 by using immobilized bovine carbonic anhydrase (BCA) was evaluated. In this way, selection of suitable carriers which have a gas adsorption function would enhance the CO2 sequestration efficiency of the carbonic anhydrase (CA). So a metal–organic framework (MOF), an excellent material for gas adsorption and enzyme immobilization was used. In this manner, BCA was encapsulated into the microporous zeolite imidazolate framework, ZIF-8, for the first time, using a bottle-around-a-ship method. Systematic characterization including powder X-ray diffraction (PXRD), UV-vis, and Fourier transform infrared (FT-IR) spectroscopies, BET, field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray (EDX) confirmed that the entrapment of BCA molecules was successfully achieved during the crystal growth of ZIF-8 with an enzyme loading of ca. 100 ± 1.2 mg g−1 of BCA–ZIF-8. Optimization of the matrix for increasing the stability of the enzyme in an encapsulated form is the main aim of the present study. The de novo approach was proposed because this method provides better enzyme protection from degradation, minimizes enzyme leaching and enables multiple reuse. Then, the influence of different parameters, including pH, temperature, storage and reusability, was evaluated for enzyme@MOF composites versus free enzymes. The prepared biocatalyst exhibited outstanding activity in a wide pH and temperature range and demonstrates high storage stability up to 37 days. This efficient and simple association procedure seems well-adapted to produce an enzymatic bio-catalyst for biocatalytic hydration of CO2. The FT-IR analysis revealed that the structure of BCA was well maintained during the encapsulation process. The thermal stability and reusability of the BCA–ZIF-8 increased noticeably due to the structural rigidity and confinement of the ZIF-8 scaffolds. These two parameters are very important for practical applications. A novel heterogeneous bio-catalyst was developed for CO2 capture by encapsulating bovine carbonic anhydrase into ZIF-8.![]()
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Affiliation(s)
- Vahideh Asadi
- Department of Chemistry
- Catalysis Division
- University of Isfahan
- Isfahan 81746-73441
- Iran
| | - Reihaneh Kardanpour
- Department of Chemistry
- Catalysis Division
- University of Isfahan
- Isfahan 81746-73441
- Iran
| | | | - Majid Moghadam
- Department of Chemistry
- Catalysis Division
- University of Isfahan
- Isfahan 81746-73441
- Iran
| | - Valiollah Mirkhani
- Department of Chemistry
- Catalysis Division
- University of Isfahan
- Isfahan 81746-73441
- Iran
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Naraharisetti PK, Yeo TY, Bu J. Factors Influencing CO 2 and Energy Penalties of CO 2 Mineralization Processes. Chemphyschem 2017. [PMID: 28639317 DOI: 10.1002/cphc.201700565] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Carbon mineralization is one of the carbon capture utilization, and storage (CCUS) technologies that can be used to capture large quantities of CO2 and convert it into stable carbonate products that can be stored easily. Several CO2 mineralization processes have been proposed; however, there are no commercial-scale projects because there are still significant issues that need to be improved before commercialization can take place. In this work, we evaluate the CO2 and energy penalties related to the most well-known types of mineralization processes developed to date, in which the mineralization reaction takes place directly under aqueous conditions, high pressures and temperatures, and compared these with newer T-P swing processes and ball-mill reactor processes, which are under development. The data used in the evaluation are taken from published literature. By comparing the three processes, we identify important variables that contribute to high CO2 and energy penalties so that future research can focus on optimization of these variables. It is observed that slurry concentration (heating) and particle size (grinding) are critical factors, with mineral calcination and operating pressure constituting other important factors.
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Affiliation(s)
- Pavan Kumar Naraharisetti
- Institute of Chemical and Engineering Sciences, A*STAR (Agency for Science, Technology and Research), 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore
| | - Tze Yuen Yeo
- Institute of Chemical and Engineering Sciences, A*STAR (Agency for Science, Technology and Research), 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore
| | - Jie Bu
- Institute of Chemical and Engineering Sciences, A*STAR (Agency for Science, Technology and Research), 1 Pesek Road, Jurong Island, Singapore, 627833, Singapore
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13
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Jun SY, Kim SH, Kanth BK, Lee J, Pack SP. Expression and characterization of a codon-optimized alkaline-stable carbonic anhydrase from Aliivibrio salmonicida for CO 2 sequestration applications. Bioprocess Biosyst Eng 2016; 40:413-421. [PMID: 27896426 DOI: 10.1007/s00449-016-1709-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2016] [Accepted: 11/17/2016] [Indexed: 11/28/2022]
Abstract
The CO2 mineralization process, accelerated by carbonic anhydrase (CA) was proposed for the efficient capture and storage of CO2, the accumulation of which in the atmosphere is the main cause of global warming. Here, we characterize a highly stable form of the cloned CA from the Gram-negative marine bacterium Aliivibrio salmonicida, named ASCA that can promote CO2 absorption in an alkaline solvent required for efficient carbon capture. We designed a mature form of ASCA (mASCA) using a codon optimization of ASCA gene and removal of ASCA signal peptide. mASCA was highly expressed (255 mg/L) with a molecular weight of approximately 26 kDa. The mASCA enzyme exhibited stable esterase activity within a temperature range of 10-60 °C and a pH range of 6-11. mASCA activity remained stable for 48 h at pH 10. We also investigated its inhibition profiles using inorganic anions, such as acetazolamide, sulfanilamide, iodide, nitrate, and azide. We also demonstrate that mASCA is capable of catalyzing the conversion of CO2 to CaCO3 (calcite form) in the presence of Ca2+. It should be noted that mASCA enzyme exhibits high production yield and sufficient stabilities against relatively high temperature and alkaline pH, which are required conditions for the development of more efficient enzymatic CCS systems.
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Affiliation(s)
- So-Young Jun
- Department of Biotechnology and Bioinformatics, Korea University, 2511 Sejong-Ro, Sejong, 30019, Korea
| | - Sung Ho Kim
- Department of Biotechnology and Bioinformatics, Korea University, 2511 Sejong-Ro, Sejong, 30019, Korea
| | - Bashista Kumar Kanth
- Department of Biotechnology and Bioinformatics, Korea University, 2511 Sejong-Ro, Sejong, 30019, Korea
| | - Jinwon Lee
- Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeom-ro, Seoul, 04107, Korea.
| | - Seung Pil Pack
- Department of Biotechnology and Bioinformatics, Korea University, 2511 Sejong-Ro, Sejong, 30019, Korea.
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14
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Yuen YT, Sharratt PN, Jie B. Carbon dioxide mineralization process design and evaluation: concepts, case studies, and considerations. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:22309-22330. [PMID: 27055896 DOI: 10.1007/s11356-016-6512-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 03/21/2016] [Indexed: 06/05/2023]
Abstract
Numerous carbon dioxide mineralization (CM) processes have been proposed to overcome the slow rate of natural weathering of silicate minerals. Ten of these proposals are mentioned in this article. The proposals are described in terms of the four major areas relating to CM process design: pre-treatment, purification, carbonation, and reagent recycling operations. Any known specifics based on probable or representative operating and reaction conditions are listed, and basic analysis of the strengths and shortcomings associated with the individual process designs are given in this article. The processes typically employ physical or chemical pseudo-catalytic methods to enhance the rate of carbon dioxide mineralization; however, both methods have its own associated advantages and problems. To examine the feasibility of a CM process, three key aspects should be included in the evaluation criteria: energy use, operational considerations as well as product value and economics. Recommendations regarding the optimal level of emphasis and implementation of measures to control these aspects are given, and these will depend very much on the desired process objectives. Ultimately, a mix-and-match approach to process design might be required to provide viable and economic proposals for CM processes.
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Affiliation(s)
- Yeo Tze Yuen
- Institute of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, Jurong Island, 627833, Singapore
| | - Paul N Sharratt
- Institute of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, Jurong Island, 627833, Singapore
| | - Bu Jie
- Institute of Chemical and Engineering Sciences, A*STAR, 1 Pesek Road, Jurong Island, 627833, Singapore.
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Park J, Hwang ET, Seo BK, Gu MB. Continuous Modular Biomimetic Utilization of Carbon Dioxide toward Multi- and Chemoenzymatic Systems. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01798] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jieun Park
- Department
of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong,
Seongbuk-gu, 136-701 Seoul, Republic of Korea
| | - Ee Taek Hwang
- School
of Biomedical Sciences and the Astbury Centre for Structural Molecular
Biology, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Bo-Kuk Seo
- Department
of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong,
Seongbuk-gu, 136-701 Seoul, Republic of Korea
| | - Man Bock Gu
- Department
of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Anam-dong,
Seongbuk-gu, 136-701 Seoul, Republic of Korea
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16
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Engineering de novo disulfide bond in bacterial α-type carbonic anhydrase for thermostable carbon sequestration. Sci Rep 2016; 6:29322. [PMID: 27385052 PMCID: PMC4935852 DOI: 10.1038/srep29322] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Accepted: 06/16/2016] [Indexed: 11/29/2022] Open
Abstract
Exploiting carbonic anhydrase (CA), an enzyme that rapidly catalyzes carbon dioxide hydration, is an attractive biomimetic route for carbon sequestration due to its environmental compatibility and potential economic viability. However, the industrial applications of CA are strongly hampered by the unstable nature of enzymes. In this work, we introduced in silico designed, de novo disulfide bond in a bacterial α-type CA to enhance thermostability. Three variants were selected and expressed in Escherichia coli with an additional disulfide bridge. One of the variants showed great enhancement in terms of both kinetic and thermodynamic stabilities. This improvement could be attributed to the loss of conformational entropy of the unfolded state, showing increased rigidity. The variant showed an upward-shifted optimal temperature and appeared to be thermoactivated, which compensated for the lowered activity at 25 °C. Collectively, the variant constructed by the rapid and effective de novo disulfide engineering can be used as an efficient biocatalyst for carbon sequestration under high temperature conditions.
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17
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Xiao L, Lian B, Dong C, Liu F. The selective expression of carbonic anhydrase genes of Aspergillus nidulans in response to changes in mineral nutrition and CO2 concentration. Microbiologyopen 2016; 5:60-9. [PMID: 26553629 PMCID: PMC4767425 DOI: 10.1002/mbo3.311] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 09/25/2015] [Accepted: 10/06/2015] [Indexed: 12/21/2022] Open
Abstract
Carbonic anhydrase (CA) plays an important role in the formation and evolution of life. However, to our knowledge, there has been no report on CA isoenzyme function differentiation in fungi. Two different CA gene sequences in Aspergillus nidulans with clear genetic background provide us a favorable basis for studying function differentiation of CA isoenzymes. Heterologously expressed CA1 was used to test its weathering ability on silicate minerals and real-time quantitative PCR was used to detect expression of the CA1 and CA2 genes at different CO2 concentrations and in the presence of different potassium sources. The northern blot method was applied to confirm the result of CA1 gene expression. Heterologously expressed CA1 significantly promoted dissolution of biotite and wollastonite, and CA1 gene expression increased significantly in response to soluble K-deficiency. The northern blot test further showed that CA1 participated in K-feldspar weathering. In addition, the results showed that CA2 was primary involved in adapting to CO2 concentration change. Taken together, A. nidulans can choose different CA to meet their survival needs, which imply that some environmental microbes have evolved different CAs to adapt to changes in CO2 concentration and acquire mineral nutrition so that they can better adapt to environmental changes. Inversely, their adaption may impact mineral weathering and/or CO2 concentration, and even global change.
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Affiliation(s)
- Leilei Xiao
- Jiangsu Key Laboratory for Microbes and Functional GenomicsJiangsu Engineering and Technology Research Center for MicrobiologyCollege of Life SciencesNanjing Normal UniversityNanjing210023China
- Key Laboratory of Coastal Environmental Processes and Ecological RemediationYantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai264003China
| | - Bin Lian
- Jiangsu Key Laboratory for Microbes and Functional GenomicsJiangsu Engineering and Technology Research Center for MicrobiologyCollege of Life SciencesNanjing Normal UniversityNanjing210023China
| | - Cuiling Dong
- Jiangsu Key Laboratory for Microbes and Functional GenomicsJiangsu Engineering and Technology Research Center for MicrobiologyCollege of Life SciencesNanjing Normal UniversityNanjing210023China
| | - Fanghua Liu
- Key Laboratory of Coastal Environmental Processes and Ecological RemediationYantai Institute of Coastal Zone ResearchChinese Academy of SciencesYantai264003China
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18
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Hiremath V, Kwon S, Hwang S, Cho M, Seo JG. Induced application of biological waste Escherichia coli functionalized with an amine-based polymer for CO2capture. RSC Adv 2016. [DOI: 10.1039/c6ra16280k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Amine-based polymer (polyethylenimine) functionalized biological waste (Escherichia coli) could open up its new application as a reusable waste source for CO2capture.
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Affiliation(s)
- Vishwanath Hiremath
- Department of Energy Science and Technology
- Myongji University
- Yongin-si
- South Korea
| | - Soonchul Kwon
- School of Urban, Architecture and Civil Engineering
- Pusan National University
- Busan 46241
- Republic of Korea
| | - Soonha Hwang
- Department of Energy Science and Technology
- Myongji University
- Yongin-si
- South Korea
| | - Min Cho
- Department of Biotechnology
- Advanced Institute of Environment and Bioscience
- College of Environmental and Bioresource Science
- Chonbuk National University
- Iksan
| | - Jeong Gil Seo
- Department of Energy Science and Technology
- Myongji University
- Yongin-si
- South Korea
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19
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Li CX, Jiang XC, Qiu YJ, Xu JH. Identification of a new thermostable and alkali-tolerant α-carbonic anhydrase from Lactobacillus delbrueckii as a biocatalyst for CO2 biomineralization. BIORESOUR BIOPROCESS 2015. [DOI: 10.1186/s40643-015-0074-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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20
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Shi J, Jiang Y, Jiang Z, Wang X, Wang X, Zhang S, Han P, Yang C. Enzymatic conversion of carbon dioxide. Chem Soc Rev 2015; 44:5981-6000. [PMID: 26055659 DOI: 10.1039/c5cs00182j] [Citation(s) in RCA: 180] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
With the continuous increase in fossil fuels consumption and the rapid growth of atmospheric CO2 concentration, the harmonious state between human and nature faces severe challenges. Exploring green and sustainable energy resources and devising efficient methods for CO2 capture, sequestration and utilization are urgently required. Converting CO2 into fuels/chemicals/materials as an indispensable element for CO2 capture, sequestration and utilization may offer a win-win strategy to both decrease the CO2 concentration and achieve the efficient exploitation of carbon resources. Among the current major methods (including chemical, photochemical, electrochemical and enzymatic methods), the enzymatic method, which is inspired by the CO2 metabolic process in cells, offers a green and potent alternative for efficient CO2 conversion due to its superior stereo-specificity and region/chemo-selectivity. Thus, in this tutorial review, we firstly provide a brief background about enzymatic conversion for CO2 capture, sequestration and utilization. Next, we depict six major routes of the CO2 metabolic process in cells, which are taken as the inspiration source for the construction of enzymatic systems in vitro. Next, we focus on the state-of-the-art routes for the catalytic conversion of CO2 by a single enzyme system and by a multienzyme system. Some emerging approaches and materials utilized for constructing single-enzyme/multienzyme systems to enhance the catalytic activity/stability will be highlighted. Finally, a summary about the current advances and the future perspectives of the enzymatic conversion of CO2 will be presented.
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Affiliation(s)
- Jiafu Shi
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
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21
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Patel TN, Park AHA, Banta S. Genetic manipulation of outer membrane permeability: generating porous heterogeneous catalyst analogs in Escherichia coli. ACS Synth Biol 2014; 3:848-54. [PMID: 24932924 DOI: 10.1021/sb400202s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The limited permeability of the E. coli outer membrane can significantly hinder whole-cell biocatalyst performance. In this study, the SARS coronavirus small envelope protein (SCVE) was expressed in E. coli cells previously engineered for periplasmic expression of carbonic anhydrase (CA) activity. This maneuver increased small molecule uptake by the cells, resulting in increased apparent CA activity of the biocatalysts. The enhancements in activity were quantified using methods developed for traditional heterogeneous catalysis. The expression of the SCVE protein was found to significantly reduce the Thiele moduli (ϕ), as well as increase the effectiveness factors (η), effective diffusivities (De), and permeabilities (P) of the biocatalysts. These catalytic improvements translated into superior performance of the biocatalysts for the precipitation of calcium carbonate from solution which is an attractive strategy for long-term sequestration of captured carbon dioxide. Overall, these results demonstrate that synthetic biology approaches can be used to enhance heterogeneous catalysts incorporated into microbial whole-cell scaffolds.
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Affiliation(s)
- Tushar N Patel
- Department
of Chemical Engineering, Columbia University, New York, New York 10027, United States
| | - Ah-Hyung Alissa Park
- Department
of Earth and Environmental Engineering, Columbia University, New York, New York 10027, United States
| | - Scott Banta
- Department
of Chemical Engineering, Columbia University, New York, New York 10027, United States
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22
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Jo BH, Seo JH, Yang YJ, Baek K, Choi YS, Pack SP, Oh SH, Cha HJ. Bioinspired Silica Nanocomposite with Autoencapsulated Carbonic Anhydrase as a Robust Biocatalyst for CO2 Sequestration. ACS Catal 2014. [DOI: 10.1021/cs5008409] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Byung Hoon Jo
- School
of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang 790-784, Korea
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Jeong Hyun Seo
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
- School
of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Korea
| | - Yun Jung Yang
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Kyungjoon Baek
- Department
of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Yoo Seong Choi
- Department
of Chemical Engineering, Chungnam National University, Daejeon 305-764, Korea
| | - Seung Pil Pack
- Department
of Biotechnology and Bioinformatics, Korea University, Sejong 339-700, Korea
| | - Sang Ho Oh
- Department
of Materials Science and Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
| | - Hyung Joon Cha
- School
of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology, Pohang 790-784, Korea
- Department
of Chemical Engineering, Pohang University of Science and Technology, Pohang 790-784, Korea
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23
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Bacterial extremo-α-carbonic anhydrases from deep-sea hydrothermal vents as potential biocatalysts for CO2 sequestration. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.08.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Beuvier T, Calvignac B, Bardeau JF, Bulou A, Boury F, Gibaud A. Quantification of the Dissolved Inorganic Carbon Species and of the pH of Alkaline Solutions Exposed to CO2 under Pressure: A Novel Approach by Raman Scattering. Anal Chem 2014; 86:9895-900. [DOI: 10.1021/ac5025446] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Thomas Beuvier
- LUNAM, Université du Maine, Institut des
Molécules et Matériaux du Mans, UMR CNRS 6283, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Brice Calvignac
- LUNAM, Université d’Angers, INSERM
U1066-Micro-Nanomedecines Biomimétiques, 49933 Angers Cedex 9, France
| | - Jean-François Bardeau
- LUNAM, Université du Maine, Institut des
Molécules et Matériaux du Mans, UMR CNRS 6283, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Alain Bulou
- LUNAM, Université du Maine, Institut des
Molécules et Matériaux du Mans, UMR CNRS 6283, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | - Frank Boury
- LUNAM, Université d’Angers, INSERM
U1066-Micro-Nanomedecines Biomimétiques, 49933 Angers Cedex 9, France
| | - Alain Gibaud
- LUNAM, Université du Maine, Institut des
Molécules et Matériaux du Mans, UMR CNRS 6283, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
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25
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26
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Methane adsorption characteristics on coal surface above critical temperature through Dubinin–Astakhov model and Langmuir model. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2013.12.047] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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27
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Patel TN, Park AHA, Banta S. Surface Display of Small Peptides on Escherichia coli for Enhanced Calcite Precipitation Rates. Biopolymers 2014; 102:191-6. [PMID: 26820015 DOI: 10.1002/bip.22466] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Mineralization has emerged as a promising strategy for long-term carbon sequestration. These processes involve carbon dioxide hydration followed by mineral precipitation. We have explored the production of whole-cell biocatalysts engineered with carbonic anhydrase (CA) activity to accelerate the CO₂ hydration reaction. In this study, short polypeptides were displayed on the surface of E. coli cells and whole-cell biocatalysts containing periplasmically expressed CAs in an attempt to enhance calcite mineral formation. It was found that cells coexpressing recombinant periplasmic CA and surface-displayed GPA peptide (PEVPEGAFDTAI) outperformed other peptide-expressing biocatalysts evaluated in terms of the amount of precipitate formed, as well as the overall formation rate of solids. Cells expressing the Cab CA isoform (BLR-pCab) and Cam isoform (BLR-pCam) with the surface-displayed GPA peptide exhibited 36 and 59% improvements in precipitation amounts, as well as 18 and 60% improvements in overall formation rates, respectively, over similar biocatalysts without GPA expression. The biocatalyst with the best performance was BLR-pCam/GPA, which generated 0.15 g of CaCO₃, while BLR cells generated only 0.08 g of CaCO₃ under the same small batch reaction conditions. The BLR-pCam/GPA cells also exhibited the fastest formation rates, achieving the maximum change in solution turbidity after only 2.2 min, as opposed to 6.3 min for BLR cells. These results demonstrate that synthetic biology approaches can be used to create novel biocatalysts with the ability to enhance both catalysis and precipitation activities.
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28
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Patel TN, Swanson EJ, Park AHA, Banta S. An automated method for measuring the operational stability of biocatalysts with carbonic anhydrase activity. Biochem Eng J 2014. [DOI: 10.1016/j.bej.2013.11.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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29
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Engineered Escherichia coli with periplasmic carbonic anhydrase as a biocatalyst for CO2 sequestration. Appl Environ Microbiol 2013; 79:6697-705. [PMID: 23974145 DOI: 10.1128/aem.02400-13] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Carbonic anhydrase is an enzyme that reversibly catalyzes the hydration of carbon dioxide (CO2). It has been suggested recently that this remarkably fast enzyme can be used for sequestration of CO2, a major greenhouse gas, making this a promising alternative for chemical CO2 mitigation. To promote the economical use of enzymes, we engineered the carbonic anhydrase from Neisseria gonorrhoeae (ngCA) in the periplasm of Escherichia coli, thereby creating a bacterial whole-cell catalyst. We then investigated the application of this system to CO2 sequestration by mineral carbonation, a process with the potential to store large quantities of CO2. ngCA was highly expressed in the periplasm of E. coli in a soluble form, and the recombinant bacterial cell displayed the distinct ability to hydrate CO2 compared with its cytoplasmic ngCA counterpart and previously reported whole-cell CA systems. The expression of ngCA in the periplasm of E. coli greatly accelerated the rate of calcium carbonate (CaCO3) formation and exerted a striking impact on the maximal amount of CaCO3 produced under conditions of relatively low pH. It was also shown that the thermal stability of the periplasmic enzyme was significantly improved. These results demonstrate that the engineered bacterial cell with periplasmic ngCA can successfully serve as an efficient biocatalyst for CO2 sequestration.
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30
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Chu DH, Vinoba M, Bhagiyalakshmi M, Hyun Baek II, Nam SC, Yoon Y, Kim SH, Jeong SK. CO2 mineralization into different polymorphs of CaCO3 using an aqueous-CO2 system. RSC Adv 2013. [DOI: 10.1039/c3ra44007a] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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