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Oliveira SSS, Bello ML, Rodrigues CR, Azevedo PLDE, Ramos MCKV, Aquino-Neto FRDE, Fiaux SB, Dias LRS. Asymmetric bioreduction of β-ketoesters derivatives by Kluyveromyces marxianus: influence of molecular structure on the conversion and enantiomeric excess. AN ACAD BRAS CIENC 2017; 89:1403-1415. [PMID: 28793010 DOI: 10.1590/0001-3765201720170118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 03/28/2017] [Indexed: 01/23/2023] Open
Abstract
This study presents the bioreduction of six β-ketoesters by whole cells of Kluyveromyces marxianus and molecular investigation of a series of 13 β-ketoesters by hologram quantitative structure-activity relationship (HQSAR) in order to relate with conversion and enantiomeric excess of β-stereogenic-hydroxyesters obtained by the same methodology. Four of these were obtained as (R)-configuration and two (S)-configuration, among them four compounds exhibited >99% enantiomeric excess. The β-ketoesters series LUMO maps showed that the β-carbon of the ketoester scaffold are exposed to undergo nucleophilic attack, suggesting a more favorable β-carbon side to enzymatic reduction based on adopted molecular conformation at the reaction moment. The HQSAR method was performed on the β-ketoesters derivatives separating them into those provided predominantly (R)- or (S)-β-hydroxyesters. The HQSAR models for both (R)- and (S)-configuration showed high predictive capacity. The HQSAR contribution maps suggest the importance of β-ketoesters scaffold as well as the substituents attached therein to asymmetric reduction, showing a possible influence of the ester group carbonyl position on the molecular conformation in the enzyme catalytic site, exposing a β-carbon side to the bioconversion to (S)- and (R)-enantiomers.
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Affiliation(s)
- Simone S S Oliveira
- Faculdade de Farmácia, Universidade Federal Fluminense/UFF, Rua Mário Viana, 523, Santa Rosa, 24241-000 Niterói, RJ, Brazil
| | - Murilo L Bello
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro/UFRJ, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, 373, Cidade Universitária, 21941-599 Rio de Janeiro, RJ, Brazil
| | - Carlos R Rodrigues
- Faculdade de Farmácia, Universidade Federal do Rio de Janeiro/UFRJ, Centro de Ciências da Saúde, Av. Carlos Chagas Filho, 373, Cidade Universitária, 21941-599 Rio de Janeiro, RJ, Brazil
| | - Paula L DE Azevedo
- Instituto de Química, Universidade Federal do Rio de Janeiro/UFRJ, Centro de Tecnologia, Av. Athos da Silveira Ramos, 149, Bloco A, Cidade Universitária, 21941-909 Rio de Janeiro, RJ, Brazil
| | - Maria C K V Ramos
- Instituto de Química, Universidade Federal do Rio de Janeiro/UFRJ, Centro de Tecnologia, Av. Athos da Silveira Ramos, 149, Bloco A, Cidade Universitária, 21941-909 Rio de Janeiro, RJ, Brazil
| | - Francisco R DE Aquino-Neto
- Instituto de Química, Universidade Federal do Rio de Janeiro/UFRJ, Centro de Tecnologia, Av. Athos da Silveira Ramos, 149, Bloco A, Cidade Universitária, 21941-909 Rio de Janeiro, RJ, Brazil
| | - Sorele B Fiaux
- Faculdade de Farmácia, Universidade Federal Fluminense/UFF, Rua Mário Viana, 523, Santa Rosa, 24241-000 Niterói, RJ, Brazil
| | - Luiza R S Dias
- Faculdade de Farmácia, Universidade Federal Fluminense/UFF, Rua Mário Viana, 523, Santa Rosa, 24241-000 Niterói, RJ, Brazil
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3
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Polakovič M, Švitel J, Bučko M, Filip J, Neděla V, Ansorge-Schumacher MB, Gemeiner P. Progress in biocatalysis with immobilized viable whole cells: systems development, reaction engineering and applications. Biotechnol Lett 2017; 39:667-683. [PMID: 28181062 DOI: 10.1007/s10529-017-2300-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 02/01/2017] [Indexed: 11/28/2022]
Abstract
Viable microbial cells are important biocatalysts in the production of fine chemicals and biofuels, in environmental applications and also in emerging applications such as biosensors or medicine. Their increasing significance is driven mainly by the intensive development of high performance recombinant strains supplying multienzyme cascade reaction pathways, and by advances in preservation of the native state and stability of whole-cell biocatalysts throughout their application. In many cases, the stability and performance of whole-cell biocatalysts can be highly improved by controlled immobilization techniques. This review summarizes the current progress in the development of immobilized whole-cell biocatalysts, the immobilization methods as well as in the bioreaction engineering aspects and economical aspects of their biocatalytic applications.
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Affiliation(s)
- Milan Polakovič
- Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak Technical University, Bratislava, Slovakia
| | - Juraj Švitel
- Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak Technical University, Bratislava, Slovakia
| | - Marek Bučko
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia
| | - Jaroslav Filip
- Center for Advanced Materials, Qatar University, Doha, Qatar
| | - Vilém Neděla
- Institute of Scientific Instruments, Academy of Sciences Czech Republic, Brno, Czech Republic
| | | | - Peter Gemeiner
- Department of Glycobiotechnology, Institute of Chemistry, Slovak Academy of Sciences, Bratislava, Slovakia.
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4
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Kisukuri CM, Andrade LH. Production of chiral compounds using immobilized cells as a source of biocatalysts. Org Biomol Chem 2015; 13:10086-107. [PMID: 26366634 DOI: 10.1039/c5ob01677k] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The importance of chiral compounds in all fields of technology and life sciences is shown. Small chiral molecules are mainly used as building blocks in the synthesis of more complex and functionalized compounds. Nature creates and imposes stereoselectivity by means of enzymes, which are highly efficient biocatalysts. The use of whole cells as a biocatalyst source is a promising strategy for avoiding some drawbacks associated with the use of pure enzymes, especially their high cost. The use of free cells is also challenging, since cell lysis can also occur under the reaction conditions. However, cell immobilization has been employed to increase the catalytic potential of enzymes by extending their lifetimes in organic solvents and non-natural environments. Besides, immobilized cells maintain their biocatalytic performance for several reaction cycles. Considering the above-mentioned arguments, several authors have synthesized different classes of chiral compounds such as alcohols, amines, carboxylic acids, amides, sulfides and lactones by means of immobilized cells. Our aim was to discuss the main aspects of the production of chiral compounds using immobilized cells as a source of biocatalysts, except under fermentation conditions.
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Affiliation(s)
- Camila M Kisukuri
- Universidade de São Paulo, Instituto de Química, Av. Prof. Lineu Prestes 748, SP 05508-900, São Paulo, Brazil.
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6
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Lu H, Ni K, Wang C, Black KC, Wei D, Ren Y, Messersmith PB. A novel technique for in situ aggregation of Gluconobacter oxydans using bio-adhesive magnetic nanoparticles. Biotechnol Bioeng 2012; 109:2970-7. [PMID: 22729662 PMCID: PMC3477288 DOI: 10.1002/bit.24582] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Revised: 05/02/2012] [Accepted: 06/11/2012] [Indexed: 01/22/2023]
Abstract
Here, we present a novel technique to immobilize magnetic particles onto whole Gluconobacter oxydans in situ via a synthetic adhesive biomimetic material inspired by the protein glues of marine mussels. Our approach involves simple coating of a cell adherent polydopamine film onto magnetic nanoparticles, followed by conjugation of the polydopamine-coated nanoparticles to G. oxydans which resulted in cell aggregation. After optimization, 21.3 mg (wet cell weight) G. oxydans per milligram of nanoparticle was aggregated and separated with a magnet. Importantly, the G. oxydan aggregates showed high specific activity and good reusability. The facile approach offers the potential advantages of low cost, easy cell separation, low diffusion resistance, and high efficiency. Furthermore, the approach is a convenient platform technique for magnetization of cells in situ by direct mixing of nanoparticles with a cell suspension.
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Affiliation(s)
- Huimin Lu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Kefeng Ni
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Cunxun Wang
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Kvar C.L. Black
- Biomedical Engineering Department, Northwestern University, Evanston 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston 60208, USA
| | - Dongzhi Wei
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yuhong Ren
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Phillip B. Messersmith
- Biomedical Engineering Department, Northwestern University, Evanston 60208, USA
- Chemistry of Life Processes Institute, Northwestern University, Evanston 60208, USA
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Conformational organizations of G-quadruplexes composed of d(G(4)T(n))(3)G(4). Bioorg Med Chem Lett 2010; 20:4689-92. [PMID: 20580229 DOI: 10.1016/j.bmcl.2010.05.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2010] [Accepted: 05/04/2010] [Indexed: 11/23/2022]
Abstract
Structural polymorphism is one of the important issues with regard to G-quadruplexes because the structural diversity may significantly affect their biological functions in vivo and their physical property in nano-material. A series of oligonucleotides with four repeat guanines sequence [d(G(4)T(n))(3)G(4) (n=1-6)] were designed. In this study, the effects of loop length on the formation of structures of G-quadruplex were investigated through the result of CD (circular dichroism) and 20% non-denatured polyacrylamide gel electrophoresis. Our studies demonstrate that the length of loop in 100mM KCl solution could predict the conformation of G-quadruplex.
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