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Fan X, Li K, Liu S, Wang T, Ma Y, Li Z, He C. Protein Nanotubes Assembled from Imidazole-Grafted Horseradish Peroxidase Nanogels. ACS Macro Lett 2023; 12:1031-1036. [PMID: 37433040 DOI: 10.1021/acsmacrolett.3c00198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Protein assembly, a common phenomenon in nature, plays an important role in the evolution of life. Inspired by nature, assembling protein monomers into delicate nanostructures has emerged as an attractive research area. However, sophisticated protein assemblies usually need complicated designs or templates. In this work, we successfully fabricated protein nanotubes in a facile way by coordination interactions between imidazole-grafted horseradish peroxidase (HRP) nanogels (iHNs) and Cu2+. The iHNs were synthesized by polymerization on the surface of HRP by employing vinyl imidazole as a comonomer. By direct addition of Cu2+ into iHN solution, protein tubes were therefore formed. The size of the protein tubes could be adjusted by changing the added Cu2+ amount, and the mechanism behind the formation of protein nanotubes was elucidated. Furthermore, a highly sensitive H2O2 detection system was established based on the protein tubes. This work provides a facile method to construct diverse sophisticated functional protein nanomaterials.
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Affiliation(s)
- Xiaotong Fan
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
| | - Ke Li
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology, and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Siqi Liu
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Tingting Wang
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Yedong Ma
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
| | - Zibiao Li
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2), Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore 627833, Singapore
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology, and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
| | - Chaobin He
- Department of Materials Science and Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore 117576, Singapore
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology, and Research (A*STAR), 2 Fusionopolis Way, Innovis, Singapore 138634, Singapore
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In situ encapsulation of biologically active ingredients into polymer particles by polymerization in dispersed media. Prog Polym Sci 2023. [DOI: 10.1016/j.progpolymsci.2022.101637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Kyomuhimbo HD, Brink HG. Applications and immobilization strategies of the copper-centred laccase enzyme; a review. Heliyon 2023; 9:e13156. [PMID: 36747551 PMCID: PMC9898315 DOI: 10.1016/j.heliyon.2023.e13156] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 01/11/2023] [Accepted: 01/18/2023] [Indexed: 01/26/2023] Open
Abstract
Laccase is a multi-copper enzyme widely expressed in fungi, higher plants, and bacteria which facilitates the direct reduction of molecular oxygen to water (without hydrogen peroxide production) accompanied by the oxidation of an electron donor. Laccase has attracted attention in biotechnological applications due to its non-specificity and use of molecular oxygen as secondary substrate. This review discusses different applications of laccase in various sectors of food, paper and pulp, waste water treatment, pharmaceuticals, sensors, and fuel cells. Despite the many advantages of laccase, challenges such as high cost due to its non-reusability, instability in harsh environmental conditions, and proteolysis are often encountered in its application. One of the approaches used to minimize these challenges is immobilization. The various methods used to immobilize laccase and the different supports used are further extensively discussed in this review.
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Zou B, Yan Y, Xia J, Zhang L, Adesanya IO. Enhancing bio-catalytic activity and stability of lipase nanogel by functional ionic liquids modification. Colloids Surf B Biointerfaces 2020; 195:111275. [PMID: 32739774 DOI: 10.1016/j.colsurfb.2020.111275] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/20/2020] [Accepted: 07/22/2020] [Indexed: 02/02/2023]
Abstract
A novel integrated lipase nanogel based on functional ionic liquid modification and polymerization immobilization with improved stability was designed. Characterization before and after modification and polymerization was conducted using infrared spectroscopy, Circular dichroism spectroscopy, fluorescence spectroscopy, and scanning electron microscopy. It was shown that the modification of the ionic liquid influenced the catalytic behavior of lipase significantly due to the changed structure and surface properties of lipase. The enzymatic properties, including acid-base stability, thermal stability, organic solvents stability, and storage stability of CRL nanogel, were investigated in the p-nitrophenyl palmitate hydrolysis reaction (CRL, Lipase from Candida Rugosa). The results indicated that CRL nanogel has a better pH, heat, and organic solvent tolerance after immobilization. After seven weeks of storage, the natural CRL gradually lost its enzymatic activity, and only 17.5±1.7 % of the catalytic activity remained, the residual activity of CRL nanogel was 97.3±1.8 %. It was indicated that the novel CRL nanogel was an excellent biocatalyst.
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Affiliation(s)
- Bin Zou
- School of Food and Biological Engineering, China; State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China.
| | - Yan Yan
- School of Food and Biological Engineering, China
| | - Jiaojiao Xia
- School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, China; State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, 214122, China
| | - Liming Zhang
- School of Food and Biological Engineering, China
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