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Diamanti E, López-Gallego F. Single-Particle and Single-Molecule Characterization of Immobilized Enzymes: A Multiscale Path toward Optimizing Heterogeneous Biocatalysts. Angew Chem Int Ed Engl 2024; 63:e202319248. [PMID: 38476019 DOI: 10.1002/anie.202319248] [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: 12/13/2023] [Revised: 03/04/2024] [Accepted: 03/07/2024] [Indexed: 03/14/2024]
Abstract
Heterogeneous biocatalysis is highly relevant in biotechnology as it offers several benefits and practical uses. To leverage the full potential of heterogeneous biocatalysts, the establishment of well-crafted protocols, and a deeper comprehension of enzyme immobilization on solid substrates are essential. These endeavors seek to optimize immobilized biocatalysts, ensuring maximal enzyme performance within confined spaces. For this aim, multidimensional characterization of heterogeneous biocatalysts is required. In this context, spectroscopic and microscopic methodologies conducted at different space and temporal scales can inform about the intraparticle enzyme kinetics, the enzyme spatial distribution, and the mass transport issues. In this Minireview, we identify enzyme immobilization, enzyme catalysis, and enzyme inactivation as the three main processes for which advanced characterization tools unveil fundamental information. Recent advances in operando characterization of immobilized enzymes at the single-particle (SP) and single-molecule (SM) levels inform about their functional properties, unlocking the full potential of heterogeneous biocatalysis toward biotechnological applications.
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Affiliation(s)
- Eleftheria Diamanti
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE)-, Basque Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014, Donostia-San Sebastián, Spain
| | - Fernando López-Gallego
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE)-, Basque Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014, Donostia-San Sebastián, Spain
- IKERBASQUE, Basque Foundation for Science, Maria Diaz de Haro 3, 48013, Bilbao, Spain
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2
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Lorente-Arevalo A, Orellana G, Ladero M, Bolivar JM. Overcoming Biochemical Limitations of Galactose Oxidase through the Design of a Solid-Supported Self-Sufficient Biocatalyst. Chembiochem 2023; 24:e202300421. [PMID: 37782555 DOI: 10.1002/cbic.202300421] [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: 06/04/2023] [Revised: 09/08/2023] [Accepted: 10/02/2023] [Indexed: 10/04/2023]
Abstract
Galactose Oxidase (GalOx) has gained significant interest in biocatalysis due to its ability for selective oxidation beyond the natural oxidation of galactose, enabling the production of valuable derivatives. However, the practical application of GalOx has been hindered by the limited availability of active and stable biocatalysts, as well as the inherent biochemical limitations such as oxygen (O2 ) dependency and the need for activation. In this study, we addressed these challenges by immobilizing GalOx into agarose-based and Purolite supports to enhance its activity and stability. Additionally, we identified and quantified the oxygen supply limitation into solid catalysts by intraparticle oxygen sensing showing a trade-off between the amount of protein loaded onto the solid support and the catalytic effectiveness of the immobilized enzyme. Furthermore, we coimmobilized a heme-containing protein along with the enzyme to function as an activator. To evaluate the practical application of the immobilized GalOx, we conducted the oxidation of galactose in an instrumented aerated reactor. The results showcased the efficient performance of the immobilized enzyme in the 8 h reaction cycle. Notably, the GalOx immobilized into dextran sulfate-activated agarose exhibited improved stability, overcoming the need for a soluble activator supply, and demonstrated exceptional performance in galactose oxidation. These findings offer promising prospects for the utilization of GalOx in technical biocatalytic applications.
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Affiliation(s)
- Alvaro Lorente-Arevalo
- FQPIMA Group, Chemical and Materials Engineering Department, Faculty of Chemistry, Complutense University of Madrid, Madrid, 28040, Spain
| | - Guillermo Orellana
- Chemical Optosensors & Applied Photochemistry Group (GSOLFA), Department of Organic Chemistry, Faculty of Chemistry, Complutense University of Madrid, Madrid, 28040, Spain
| | - Miguel Ladero
- FQPIMA Group, Chemical and Materials Engineering Department, Faculty of Chemistry, Complutense University of Madrid, Madrid, 28040, Spain
| | - Juan M Bolivar
- FQPIMA Group, Chemical and Materials Engineering Department, Faculty of Chemistry, Complutense University of Madrid, Madrid, 28040, Spain
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3
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Czarnievicz N, Rubanu MG, Iturralde M, Albarran-Velo J, Diamanti E, Gotor-Fernandez V, Skolimowski M, López-Gallego F. A Multiplex Assay to Assess the Transaminase Activity toward Chemically Diverse Amine Donors. Chembiochem 2023; 24:e202200614. [PMID: 36385460 DOI: 10.1002/cbic.202200614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/16/2022] [Indexed: 11/18/2022]
Abstract
The development of methods to engineer and immobilize amine transaminases (ATAs) to improve their functionality and operational stability is gaining momentum. The quest for robust, fast, and easy-to-use methods to screen the activity of large collections of transaminases, is essential. This work presents a novel and multiplex fluorescence-based kinetic assay to assess ATA activity using 4-dimethylamino-1-naphthaldehyde as an amine acceptor. The developed assay allowed us to screen a battery of amine donors using free and immobilized ATAs from different microbial sources as biocatalysts. As a result, using chromatographic methods, 4-hydroxybenzylamine was identified as the best amine donor for the amination of 5-(hydroxymethyl)furfural. Finally, we adapted this method to determine the apparent Michaelis-Menten parameters of a model immobilized ATA at the microscopic (single-particle) level. Our studies promote the use of this multiplex, multidimensional assay to screen ATAs for further improvement.
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Affiliation(s)
- Nicolette Czarnievicz
- Heterogeneous Biocatalysis Laboratory, Center for cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramón, 182, 20014, Donostia-San Sebastián, Spain.,Micronit BV, Colosseum 15, 7521 PV, Enschede (The, Netherlands.,University of Basque Country, (UPV/EHU), Donostia-San Sebastián, 20018, San Sebastián, Spain
| | - Maria Grazia Rubanu
- Heterogeneous Biocatalysis Laboratory, Center for cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramón, 182, 20014, Donostia-San Sebastián, Spain
| | - Maialen Iturralde
- Heterogeneous Biocatalysis Laboratory, Center for cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramón, 182, 20014, Donostia-San Sebastián, Spain
| | - Jesús Albarran-Velo
- Organic and Inorganic Chemistry Department, University of Oviedo, Av. Julián Clavería 8, 33006, Oviedo, Spain
| | - Eleftheria Diamanti
- Heterogeneous Biocatalysis Laboratory, Center for cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramón, 182, 20014, Donostia-San Sebastián, Spain
| | - Vicente Gotor-Fernandez
- Organic and Inorganic Chemistry Department, University of Oviedo, Av. Julián Clavería 8, 33006, Oviedo, Spain
| | | | - Fernando López-Gallego
- Heterogeneous Biocatalysis Laboratory, Center for cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramón, 182, 20014, Donostia-San Sebastián, Spain.,lkerbasque, Basque Foundation for Science, Plaza Euskadi 5, 48009, Bilbao, Spain
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Bolivar JM, Woodley JM, Fernandez-Lafuente R. Is enzyme immobilization a mature discipline? Some critical considerations to capitalize on the benefits of immobilization. Chem Soc Rev 2022; 51:6251-6290. [PMID: 35838107 DOI: 10.1039/d2cs00083k] [Citation(s) in RCA: 113] [Impact Index Per Article: 56.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Enzyme immobilization has been developing since the 1960s and although many industrial biocatalytic processes use the technology to improve enzyme performance, still today we are far from full exploitation of the field. One clear reason is that many evaluate immobilization based on only a few experiments that are not always well-designed. In contrast to many other reviews on the subject, here we highlight the pitfalls of using incorrectly designed immobilization protocols and explain why in many cases sub-optimal results are obtained. We also describe solutions to overcome these challenges and come to the conclusion that recent developments in material science, bioprocess engineering and protein science continue to open new opportunities for the future. In this way, enzyme immobilization, far from being a mature discipline, remains as a subject of high interest and where intense research is still necessary to take full advantage of the possibilities.
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Affiliation(s)
- Juan M Bolivar
- FQPIMA group, Chemical and Materials Engineering Department, Faculty of Chemical Sciences, Complutense University of Madrid, Madrid, 28040, Spain
| | - John M Woodley
- Department of Chemical and Biochemical Engineering, Technical University of Denmark, 2800 Kgs Lyngby, Denmark.
| | - Roberto Fernandez-Lafuente
- Departamento de Biocatálisis. ICP-CSIC, C/Marie Curie 2, Campus UAM-CSIC Cantoblanco, Madrid 28049, Spain. .,Center of Excellence in Bionanoscience Research, External Scientific Advisory Academic, King Abdulaziz University, Jeddah 21589, Saudi Arabia
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Diamanti E, Santiago-Arcos J, Grajales-Hernández D, Czarnievicz N, Comino N, Llarena I, Di Silvio D, Cortajarena AL, López-Gallego F. Intraparticle Kinetics Unveil Crowding and Enzyme Distribution Effects on the Performance of Cofactor-Dependent Heterogeneous Biocatalysts. ACS Catal 2021; 11:15051-15067. [PMID: 34956691 PMCID: PMC8689653 DOI: 10.1021/acscatal.1c03760] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 11/03/2021] [Indexed: 12/21/2022]
Abstract
Multidimensional kinetic analysis of immobilized enzymes is essential to understand the enzyme functionality at the interface with solid materials. However, spatiotemporal kinetic characterization of heterogeneous biocatalysts on a microscopic level and under operando conditions has been rarely approached. As a case study, we selected self-sufficient heterogeneous biocatalysts where His-tagged cofactor-dependent enzymes (dehydrogenases, transaminases, and oxidases) are co-immobilized with their corresponding phosphorylated cofactors [nicotinamide adenine dinucleotide phosphate (NAD(P)H), pyridoxal phosphate (PLP), and flavin adenine dinucleotide (FAD)] on porous agarose microbeads coated with cationic polymers. These self-sufficient systems do not require the addition of exogenous cofactors to function, thus avoiding the extensive use of expensive cofactors. To comprehend the microscopic kinetics and thermodynamics of self-sufficient systems, we performed fluorescence recovery after photobleaching measurements, time-lapse fluorescence microscopy, and image analytics at both single-particle and intraparticle levels. These studies reveal a thermodynamic equilibrium that rules out the reversible interactions between the adsorbed phosphorylated cofactors and the polycations within the pores of the carriers, enabling the confined cofactors to access the active sites of the immobilized enzymes. Furthermore, this work unveils the relationship between the apparent Michaelis-Menten kinetic parameters and the enzyme density in the confined space, eliciting a negative effect of molecular crowding on the performance of some enzymes. Finally, we demonstrate that the intraparticle apparent enzyme kinetics are significantly affected by the enzyme spatial organization. Hence, multiscale characterization of immobilized enzymes serves as an instrumental tool to better understand the in operando functionality of enzymes within confined spaces.
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Affiliation(s)
- Eleftheria Diamanti
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
| | - Javier Santiago-Arcos
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
| | - Daniel Grajales-Hernández
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
| | - Nicolette Czarnievicz
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
| | - Natalia Comino
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
| | - Irantzu Llarena
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
| | - Desiré Di Silvio
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
| | - Aitziber L. Cortajarena
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
- IKERBASQUE,
Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
| | - Fernando López-Gallego
- Center
for Cooperative Research in Biomaterials (CIC biomaGUNE)—Basque
Research and Technology Alliance (BRTA), Paseo Miramón, 194, 20014 Donostia-San Sebastián, Spain
- IKERBASQUE,
Basque Foundation for Science, Maria Diaz de Haro 3, 48013 Bilbao, Spain
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Orrego AH, Andrés-Sanz D, Velasco-Lozano S, Sanchez-Costa M, Berenguer J, Guisan JM, Rocha-Martin J, López-Gallego F. Self-sufficient asymmetric reduction of β-ketoesters catalysed by a novel and robust thermophilic alcohol dehydrogenase co-immobilised with NADH. Catal Sci Technol 2021; 11:3217-3230. [PMID: 34094502 PMCID: PMC8111925 DOI: 10.1039/d1cy00268f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 02/25/2021] [Indexed: 12/04/2022]
Abstract
β-Hydroxyesters are essential building blocks utilised by the pharmaceutical and food industries in the synthesis of functional products. Beyond the conventional production methods based on chemical catalysis or whole-cell synthesis, the asymmetric reduction of β-ketoesters with cell-free enzymes is gaining relevance. To this end, a novel thermophilic (S)-3-hydroxybutyryl-CoA dehydrogenase from Thermus thermophilus HB27 (Tt27-HBDH) has been expressed, purified and biochemically characterised, determining its substrate specificity towards β-ketoesters and its dependence on NADH as a cofactor. The immobilization of Tt27-HBDH on agarose macroporous beads and its subsequent coating with polyethyleneimine has been found the best strategy to increase the stability and workability of the heterogeneous biocatalyst. Furthermore, we have embedded NADH in the cationic layer attached to the porous surface of the carrier. Since Tt27-HBDH catalyses cofactor recycling through 2-propanol oxidation, we achieve a self-sufficient heterogeneous biocatalyst where NADH is available for the immobilised enzymes but its lixiviation to the reaction bulk is avoided. Taking advantage of the autofluorescence of NADH, we demonstrate the activity of the enzyme towards the immobilised cofactor through single-particle analysis. Finally, we tested the operational stability in the asymmetric reduction of β-ketoesters in batch, succeeding in the reuse of both the enzyme and the co-immobilised cofactor up to 10 reaction cycles.
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Affiliation(s)
- Alejandro H Orrego
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP), CSIC Campus UAM, Cantoblanco 28049 Madrid Spain
- Department of Molecular Biology, Universidad Autónoma de Madrid, Center for Molecular Biology Severo-Ochoa (UAM-CSIC) Nicolás Cabrera 1 28049 Madrid Spain
- Heterogeneous Biocatalysis Laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA) Paseo de Miramón 182 Donostia San Sebastián Spain
| | - Daniel Andrés-Sanz
- Heterogeneous Biocatalysis Laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA) Paseo de Miramón 182 Donostia San Sebastián Spain
| | - Susana Velasco-Lozano
- Heterogeneous Biocatalysis Laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA) Paseo de Miramón 182 Donostia San Sebastián Spain
| | - Mercedes Sanchez-Costa
- Department of Molecular Biology, Universidad Autónoma de Madrid, Center for Molecular Biology Severo-Ochoa (UAM-CSIC) Nicolás Cabrera 1 28049 Madrid Spain
| | - José Berenguer
- Department of Molecular Biology, Universidad Autónoma de Madrid, Center for Molecular Biology Severo-Ochoa (UAM-CSIC) Nicolás Cabrera 1 28049 Madrid Spain
| | - José M Guisan
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP), CSIC Campus UAM, Cantoblanco 28049 Madrid Spain
| | - Javier Rocha-Martin
- Department of Biocatalysis, Institute of Catalysis and Petrochemistry (ICP), CSIC Campus UAM, Cantoblanco 28049 Madrid Spain
| | - Fernando López-Gallego
- Heterogeneous Biocatalysis Laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA) Paseo de Miramón 182 Donostia San Sebastián Spain
- IKERBASQUE, Basque Foundation for Science María Díaz de Haro 3 48013 Bilbao Spain
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