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Li R, Wu Z, Liu X, Chen H, Li X, Fan D, Wu Z. Increasing Multienzyme Cascade Efficiency and Stability of MOF via Partitioning Immobilization. ACS APPLIED MATERIALS & INTERFACES 2024; 16:33235-33245. [PMID: 38885355 DOI: 10.1021/acsami.4c07487] [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: 06/20/2024]
Abstract
Enhancing the stability of multienzyme cascade reactions in metal-organic frameworks (MOFs) is a challenging task in the fields of biotechnology and chemistry. However, addressing this challenge could yield far-reaching benefits across the application range in the biomedical, food, and environmental sectors. In this study, multienzyme partitioning immobilization that sequentially immobilizes cascade enzymes with hierarchical MOFs is proposed to reduce substrate diffusion resistance. Conversion results of ginsenosides indicate that this strategy improves the cascade efficiency up to 1.26 times. The substrate diffusion model is used to investigate the dual-interenzyme mass transfer behavior of substrates in the restricted domain space and evaluate the substrate channeling effect under partitioning immobilization. Molecular docking and kinetic simulations reveal that the MOFs effectively limit the conformational changes of cascade enzymes at high temperatures and in organic solvents while maintaining a large pocket of active centers. This phenomenon increased efficient substrate docking to the enzyme molecules, further optimizing cascade efficiency. The results of the immobilization of GOX and horseradish peroxidase as model enzymes indicate that the partitioned MOF immobilization strategy could be used for universal adaptation of cascade enzymes.
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Affiliation(s)
- Runze Li
- School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, P. R. China
- School of Chemistry and Chemical Engineering, Shihezi University/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
| | - Zheng Wu
- School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, P. R. China
| | - Xiaochen Liu
- School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, P. R. China
| | - Hongxiu Chen
- School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, P. R. China
| | - Xue Li
- School of Chemical Engineering, Shaanxi Key Laboratory of Degradable Biomedical Materials, Northwest University, Xi'an 710069, P. R. China
| | - Daidi Fan
- School of Chemical Engineering, Shaanxi Key Laboratory of Degradable Biomedical Materials, Northwest University, Xi'an 710069, P. R. China
| | - Zhansheng Wu
- School of Environmental and Chemical Engineering, Xi'an Key Laboratory of Textile Chemical Engineering Auxiliaries, Engineering Research Center of Biological Resources Development and Pollution Control Universities of Shaanxi Province, Key Laboratory of Textile Dyeing Wastewater Treatment Universities of Shaanxi Province, Xi'an Polytechnic University, Xi'an 710048, P. R. China
- School of Chemistry and Chemical Engineering, Shihezi University/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, P. R. China
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Mechoor A, Berchmans S, Venkatachalam G. Bimetallic Cu-Zn Zeolitic Imidazolate Frameworks as Peroxidase Mimics for the Detection of Hydrogen Peroxide: Electrochemical and Spectrophotometric Evaluation. ACS OMEGA 2023; 8:39636-39650. [PMID: 37901575 PMCID: PMC10601070 DOI: 10.1021/acsomega.3c05535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Accepted: 09/26/2023] [Indexed: 10/31/2023]
Abstract
A copper incorporated zeolitic imidazolate framework-8 (ZIF-8) has been synthesized and demonstrated to be a potential material for a peroxidase mimic. The resultant bimetallic Cu-Zn incorporated MOF is used for the dual mode sensing of hydrogen peroxide by following electrochemical as well as spectrophotometric methods. Using 3,3',5,5'-tetramethylbenzidine (TMB) as a chromogenic substrate, spectrophotometric studies are carried out, and the steady state kinetic parameters are determined for two different concentrations of Cu incorporated ZIF-8 (viz Cu@ZIF-8-1 and Cu@ZIF-8-2). It is found that both Cu@ZIF-8-1 and Cu@ZIF-8-2 exhibit more affinity toward the TMB substrate than the horseradish peroxidase (HRP) enzyme as indicated by the low Km values obtained for the substrate. Also, as the concentration of incorporated Cu increases, Vmax values are also found to be enhanced. Electrochemically, the Cu@ZIF-8 modified glassy carbon electrode (GCE) showed a good response for peroxide detection in the concentration range from 0.5 mM to 5 mM at a working potential of -0.25 V in PBS (pH 7.0) with a limit of detection (LOD) value of 0.46 mM and a sensitivity of 20.25 μA/mM. Further, the chromogenic substrate TMB is successfully immobilized on the electrode surface and subsequently used for the peroxide detection along with Cu@ZIF-8. Here, TMB acts as a mediator and shifted the working potential to 0.1 V in acetate buffer (pH 5.0) in the concentration range from 0.5 mM to 5 mM with an LOD value of 0.499 mM and a sensitivity of 0.097 μA/mM. Interestingly, the same electrode in PBS of pH 7.0 showed a response to peroxide at a working potential of -0.1 V in the concentration range from 0.5 mM to 5 mM with an LOD value of 0.143 mM and a sensitivity of 0.33 μA/mM. Moreover, the applicability of this material for peroxide sensing is evaluated using milk samples, and the proposed material is able to recover the peroxide present in milk. Thus, the bimetallic Cu-Zn MOF can be utilized for the dual mode sensing of peroxide and can be extended for various real time applications.
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Affiliation(s)
- Aswathi Mechoor
- Electrodics
and Electrocatalysis (EEC) Division, CSIR—Central
Electrochemical Research Institute (CSIR—CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy
of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
| | - Sheela Berchmans
- Electrodics
and Electrocatalysis (EEC) Division, CSIR—Central
Electrochemical Research Institute (CSIR—CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy
of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
| | - Ganesh Venkatachalam
- Electrodics
and Electrocatalysis (EEC) Division, CSIR—Central
Electrochemical Research Institute (CSIR—CECRI), Karaikudi 630003, Tamil Nadu, India
- Academy
of Scientific and Industrial Research (AcSIR), Ghaziabad 201002, India
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Li R, Liu X, Li X, Tian D, Fan D, Ma X, Wu Z. Co-immobilized β-glucosidase and snailase in green synthesized Zn-BTC for ginsenoside CK biocatalysis. Biochem Eng J 2022. [DOI: 10.1016/j.bej.2022.108677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Li X, Wu Z, Tao X, Li R, Tian D, Liu X. Gentle one-step co-precipitation to synthesize bimetallic CoCu-MOF immobilized laccase for boosting enzyme stability and Congo red removal. JOURNAL OF HAZARDOUS MATERIALS 2022; 438:129525. [PMID: 35816800 DOI: 10.1016/j.jhazmat.2022.129525] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 06/23/2022] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Laccase has received extensive attention in pollutant degradation due to its high efficiency and environmental friendliness, but free laccase has poor stability, easy inactivation, and difficulty in recycling, which limited its application. It was a smart strategy to construct a synergistic system for the efficient adsorption and degradation of pollutants by enzyme immobilization to improve the stability and recyclability of the enzyme. In this study, the materials were synthesized by a one-step co-precipitation method. With Cu-MOF as the main body, Co2+ was introduced to construct bimetallic CoCu-MOF as the protective carrier of the enzyme. The enzyme-carrying capacity and enzyme activity of Lac@CoCu-MOF were 2-fold and 3.5-fold higher than those of Lac@Cu-MOF, respectively. Lac@MOF composites had a good protective effect on enzyme in various interfering environments. At pH = 7, free laccase was completely inactivated and Lac@CoCu-MOF maintained 51.76% enzyme activity. In addition, the removal rate of Congo red by Lac@CoCu-MOF reached 90 % in 1 h at pH = 4 % and 95 % in 5 h at pH = 7, and the final TOC mineralization rate reached 86.05 %. After six cycles, the degradation rate of Lac@CoCu-MOF remained above 75 %. Therefore, Lac@CoCu-MOF was constructed with the advantages of enzyme immobilization (enhanced stability and easy operation), material adsorption, and biocatalysis (fast diffusion and high activity), which has great guiding significance for the industrial application of enzyme.
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Affiliation(s)
- Xueping Li
- School of Environmental and Chemical Engineering, Xi'an Laboratory of Textile Chemical Engineering Auxiliaries, Xi'an Polytechnic University, Xi'an 710048, PR China; School of Chemistry and Chemical Engineering, The Key Laboratory For Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China
| | - Zhansheng Wu
- School of Environmental and Chemical Engineering, Xi'an Laboratory of Textile Chemical Engineering Auxiliaries, Xi'an Polytechnic University, Xi'an 710048, PR China.
| | - Xiyang Tao
- School of Environmental and Chemical Engineering, Xi'an Laboratory of Textile Chemical Engineering Auxiliaries, Xi'an Polytechnic University, Xi'an 710048, PR China
| | - Runze Li
- School of Environmental and Chemical Engineering, Xi'an Laboratory of Textile Chemical Engineering Auxiliaries, Xi'an Polytechnic University, Xi'an 710048, PR China; School of Chemistry and Chemical Engineering, The Key Laboratory For Green Processing of Chemical Engineering of Xinjiang Bingtuan, Shihezi University, Shihezi 832003, PR China
| | - Duoduo Tian
- School of Environmental and Chemical Engineering, Xi'an Laboratory of Textile Chemical Engineering Auxiliaries, Xi'an Polytechnic University, Xi'an 710048, PR China
| | - Xiaochen Liu
- School of Environmental and Chemical Engineering, Xi'an Laboratory of Textile Chemical Engineering Auxiliaries, Xi'an Polytechnic University, Xi'an 710048, PR China.
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Li J, Zhao M, Yi L, Feng B, Fang C, Peng Z, Hu W. Sacrificial templating synthesis of metal-organic framework hybrid nanosheets as efficient pre-electrocatalyst for oxygen evolution reaction in alkaline. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2021.127745] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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