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Caratenuto A, Leach K, Liu Y, Zheng Y. Nanofibrous Biomaterial-Based Passive Cooling Paint Structurally Linked by Alkane-Oleate Interactions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:12717-12730. [PMID: 38427802 PMCID: PMC10941070 DOI: 10.1021/acsami.4c01383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2024] [Revised: 02/16/2024] [Accepted: 02/24/2024] [Indexed: 03/03/2024]
Abstract
Passive radiative cooling materials, which provide cooling without consuming electricity, are widely recognized as an important technology for reducing greenhouse gas emissions and delivering thermal comfort to less industrialized communities. Optimizing thermal and optical properties is of primary importance for these materials, but for real-world utilization, ease of application and scalability also require significant emphasis. In this work, we embed the biomaterial hydroxyapatite, in the form of nanoscale fibers, within an oil-based medium to achieve passive cooling from an easy-to-apply paint-like solution. The chemical structure and bonding behaviors of this mixture are studied in detail using FTIR, providing transferable conclusions for pigment-like passive cooling solutions. By reflecting 95% of solar energy and emitting 92% of its radiative output through the atmospheric transparency window, this composite material realizes an average subambient cooling performance of 3.7 °C in outdoor conditions under a mean solar irradiance of 800 W m-2. The inflammability of the material provides enhanced durability as well as unique opportunities for recycling which promote circular economic practices. Finally, the surface structure can be easily altered to tune bonding behaviors and hydrophobicity, making it an ideal passive cooling coating candidate for outdoor applications.
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Affiliation(s)
- Andrew Caratenuto
- Department
of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Kyle Leach
- Department
of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yang Liu
- Department
of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, United States
| | - Yi Zheng
- Department
of Mechanical and Industrial Engineering, Northeastern University, Boston, Massachusetts 02115, United States
- Department
of Chemical Engineering, Northeastern University, Boston, Massachusetts 02115, United States
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2
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Swoboda A, Pfeifenberger LJ, Duhović Z, Bürgler M, Oroz-Guinea I, Bangert K, Weißensteiner F, Parigger L, Ebner K, Glieder A, Kroutil W. Enantioselective High-Throughput Assay Showcased for the Identification of (R)- as well as (S)-Selective Unspecific Peroxygenases for C-H Oxidation. Angew Chem Int Ed Engl 2023; 62:e202312721. [PMID: 37743348 DOI: 10.1002/anie.202312721] [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: 08/29/2023] [Revised: 09/21/2023] [Accepted: 09/22/2023] [Indexed: 09/26/2023]
Abstract
Identifying (bio)catalysts displaying high enantio-/stereoselectivity is a fundamental prerequisite for the advancement of asymmetric catalysis. Herein, a high-throughput, stereoselective screening assay is reported that gives information on enantioselectivity, stereopreference and activity as showcased for peroxygenase-catalyzed hydroxylation. The assay is based on spectrophotometric analysis of the simultaneous formation of NAD(P)H from the alcohol dehydrogenase catalyzed enantioselective oxidation of the sec-alcohol product formed in the peroxygenase reaction. The assay was applied to investigate a library comprising 44 unspecific peroxygenases (UPOs) containing 25 UPOs not reported yet. Thereby, previously non-described wild-type UPOs displaying (S)- as well as (R)-stereoselectivity for the hydroxylation of representative model substrates were identified, reaching up to 98 % ee for the (R)- and 94 % ee for the (S)-enantiomer. Homology models with concomitant docking studies indicated the structural reason for the observed complementary stereopreference.
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Affiliation(s)
- Alexander Swoboda
- Austrian Center of Industrial Biotechnology (ACIB GmbH) c/o Department of Chemistry, University of Graz, Heinrichstraße 28, 8010, Graz, Austria
| | - Lukas Johannes Pfeifenberger
- Austrian Center of Industrial Biotechnology (ACIB GmbH) c/o Department of Chemistry, University of Graz, Heinrichstraße 28, 8010, Graz, Austria
- Bisy GmbH, Wünschendorf 292, 8200, Hofstätten an der Raab, Austria
| | - Zerina Duhović
- Austrian Center of Industrial Biotechnology (ACIB GmbH) c/o Department of Chemistry, University of Graz, Heinrichstraße 28, 8010, Graz, Austria
| | - Moritz Bürgler
- Bisy GmbH, Wünschendorf 292, 8200, Hofstätten an der Raab, Austria
| | - Isabel Oroz-Guinea
- Department of Chemistry, University of Graz, Heinrichstraße 28, 8010, Graz, Austria
| | - Klara Bangert
- Department of Chemistry, University of Graz, Heinrichstraße 28, 8010, Graz, Austria
| | | | - Lena Parigger
- Austrian Center of Industrial Biotechnology (ACIB GmbH) c/o Department of Chemistry, University of Graz, Heinrichstraße 28, 8010, Graz, Austria
- Bisy GmbH, Wünschendorf 292, 8200, Hofstätten an der Raab, Austria
| | - Katharina Ebner
- Bisy GmbH, Wünschendorf 292, 8200, Hofstätten an der Raab, Austria
| | - Anton Glieder
- Bisy GmbH, Wünschendorf 292, 8200, Hofstätten an der Raab, Austria
| | - Wolfgang Kroutil
- Austrian Center of Industrial Biotechnology (ACIB GmbH) c/o Department of Chemistry, University of Graz, Heinrichstraße 28, 8010, Graz, Austria
- Department of Chemistry, University of Graz, Heinrichstraße 28, 8010, Graz, Austria
- BioTechMed Graz, 8010, Graz, Austria
- Field of Excellence BioHealth, University of Graz, 8010, Graz, Austria
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3
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Structure of AlkB–AlkG shows details of alkane terminal C–H selectivity and functionalization. Nat Struct Mol Biol 2023; 30:413-414. [PMID: 37002482 PMCID: PMC10064941 DOI: 10.1038/s41594-023-00964-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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4
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Chai J, Guo G, McSweeney SM, Shanklin J, Liu Q. Structural basis for enzymatic terminal C-H bond functionalization of alkanes. Nat Struct Mol Biol 2023; 30:521-526. [PMID: 36997762 PMCID: PMC10113152 DOI: 10.1038/s41594-023-00958-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 03/01/2023] [Indexed: 04/01/2023]
Abstract
Alkane monooxygenase (AlkB) is a widely occurring integral membrane metalloenzyme that catalyzes the initial step in the functionalization of recalcitrant alkanes with high terminal selectivity. AlkB enables diverse microorganisms to use alkanes as their sole carbon and energy source. Here we present the 48.6-kDa cryo-electron microscopy structure of a natural fusion from Fontimonas thermophila between AlkB and its electron donor AlkG at 2.76 Å resolution. The AlkB portion contains six transmembrane helices with an alkane entry tunnel within its transmembrane domain. A dodecane substrate is oriented by hydrophobic tunnel-lining residues to present a terminal C-H bond toward a diiron active site. AlkG, an [Fe-4S] rubredoxin, docks via electrostatic interactions and sequentially transfers electrons to the diiron center. The archetypal structural complex presented reveals the basis for terminal C-H selectivity and functionalization within this broadly distributed evolutionary class of enzymes.
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Affiliation(s)
- Jin Chai
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA
| | - Gongrui Guo
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA
- NSLS-II, Brookhaven National Laboratory, Upton, NY, USA
| | | | - John Shanklin
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA.
| | - Qun Liu
- Biology Department, Brookhaven National Laboratory, Upton, NY, USA.
- NSLS-II, Brookhaven National Laboratory, Upton, NY, USA.
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5
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Velty A, Corma A. Advanced zeolite and ordered mesoporous silica-based catalysts for the conversion of CO 2 to chemicals and fuels. Chem Soc Rev 2023; 52:1773-1946. [PMID: 36786224 DOI: 10.1039/d2cs00456a] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
For many years, capturing, storing or sequestering CO2 from concentrated emission sources or from air has been a powerful technique for reducing atmospheric CO2. Moreover, the use of CO2 as a C1 building block to mitigate CO2 emissions and, at the same time, produce sustainable chemicals or fuels is a challenging and promising alternative to meet global demand for chemicals and energy. Hence, the chemical incorporation and conversion of CO2 into valuable chemicals has received much attention in the last decade, since CO2 is an abundant, inexpensive, nontoxic, nonflammable, and renewable one-carbon building block. Nevertheless, CO2 is the most oxidized form of carbon, thermodynamically the most stable form and kinetically inert. Consequently, the chemical conversion of CO2 requires highly reactive, rich-energy substrates, highly stable products to be formed or harder reaction conditions. The use of catalysts constitutes an important tool in the development of sustainable chemistry, since catalysts increase the rate of the reaction without modifying the overall standard Gibbs energy in the reaction. Therefore, special attention has been paid to catalysis, and in particular to heterogeneous catalysis because of its environmentally friendly and recyclable nature attributed to simple separation and recovery, as well as its applicability to continuous reactor operations. Focusing on heterogeneous catalysts, we decided to center on zeolite and ordered mesoporous materials due to their high thermal and chemical stability and versatility, which make them good candidates for the design and development of catalysts for CO2 conversion. In the present review, we analyze the state of the art in the last 25 years and the potential opportunities for using zeolite and OMS (ordered mesoporous silica) based materials to convert CO2 into valuable chemicals essential for our daily lives and fuels, and to pave the way towards reducing carbon footprint. In this review, we have compiled, to the best of our knowledge, the different reactions involving catalysts based on zeolites and OMS to convert CO2 into cyclic and dialkyl carbonates, acyclic carbamates, 2-oxazolidones, carboxylic acids, methanol, dimethylether, methane, higher alcohols (C2+OH), C2+ (gasoline, olefins and aromatics), syngas (RWGS, dry reforming of methane and alcohols), olefins (oxidative dehydrogenation of alkanes) and simple fuels by photoreduction. The use of advanced zeolite and OMS-based materials, and the development of new processes and technologies should provide a new impulse to boost the conversion of CO2 into chemicals and fuels.
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Affiliation(s)
- Alexandra Velty
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 València, Spain.
| | - Avelino Corma
- Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 València, Spain.
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6
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Azam M, Sahoo PK, Mohapatra RK, Kumar M, Ansari A, Moon IS, Chutia A, Al-Resayes SI, Biswal SK. Structural investigations, Hirsfeld surface analyses, and molecular docking studies of a phenoxo-bridged binuclear Zinc(II) complex. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132039] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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7
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Zhang X, Zeng R. Neutrally Photoinduced MgCl2-Catalyzed Alkenylation and Imidoylation of Alkanes. Org Chem Front 2022. [DOI: 10.1039/d2qo01003h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a practical protocol for oxidation of the chloride ion (Cl-) to chlorine radical (Cl.) via a photoinduced MgCl2 catalysis, avoiding the use of strong acid, formal oxidant, and...
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8
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Rotilio L, Swoboda A, Ebner K, Rinnofner C, Glieder A, Kroutil W, Mattevi A. Structural and biochemical studies enlighten the unspecific peroxygenase from Hypoxylon sp. EC38 as an efficient oxidative biocatalyst. ACS Catal 2021; 11:11511-11525. [PMID: 34540338 DOI: 10.1021/acscatal.1c03065] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Unspecific peroxygenases (UPO) are glycosylated fungal enzymes that can selectively oxidize C-H bonds. UPOs employ hydrogen peroxide as oxygen donor and reductant. With such an easy-to-handle co-substrate and without the need of a reducing agent, UPOs are emerging as convenient oxidative biocatalysts. Here, an unspecific peroxygenase from Hypoxylon sp. EC38 (HspUPO) was identified in an activity-based screen of six putative peroxygenase enzymes that were heterologously expressed in Pichia pastoris. The enzyme was found to tolerate selected organic solvents such as acetonitrile and acetone. HspUPO is a versatile catalyst performing various reactions, such as the oxidation of prim- and sec-alcohols, epoxidations and hydroxylations. Semi-preparative biotransformations were demonstrated for the non-enantioselective oxidation of racemic 1-phenylethanol rac -1b (TON = 13000), giving the product with 88% isolated yield, and the oxidation of indole 6a to give indigo 6b (TON = 2800) with 98% isolated yield. HspUPO features a compact and rigid three-dimensional conformation that wraps around the heme and defines a funnel-shaped tunnel that leads to the heme iron from the protein surface. The tunnel extends along a distance of about 12 Å with a fairly constant diameter in its innermost segment. Its surface comprises both hydrophobic and hydrophilic groups for dealing with small-to-medium size substrates of variable polarities. The structural investigation of several protein-ligand complexes revealed that the active site of HspUPO is accessible to molecules of varying bulkiness and polarity with minimal or no conformational changes, explaining the relatively broad substrate scope of the enzyme. With its convenient expression system, robust operational properties, relatively small size, well-defined structural features, and diverse reaction scope, HspUPO is an exploitable candidate for peroxygenase-based biocatalysis.
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Affiliation(s)
- Laura Rotilio
- Department of Biology and Biotechnology, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
| | - Alexander Swoboda
- Austrian Centre of Industrial Biotechnology, c/o Institute of Chemistry, University of Graz, Heinrichstraße 28, 8010 Graz, Austria
| | - Katharina Ebner
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
| | - Claudia Rinnofner
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
| | - Anton Glieder
- Institute of Molecular Biotechnology, Graz University of Technology, Petersgasse 14, 8010 Graz, Austria
| | - Wolfgang Kroutil
- Austrian Centre of Industrial Biotechnology, c/o Institute of Chemistry, University of Graz, Heinrichstraße 28, 8010 Graz, Austria
- Institute of Chemistry, University of Graz, NAWI Gaz, BioTechMed Graz, Heinrichstraße 28, 8010 Graz, Austria
- Field of Excellence BioHealth-University of Graz, 8010 Graz, Austria
| | - Andrea Mattevi
- Department of Biology and Biotechnology, University of Pavia, via Ferrata 9, 27100 Pavia, Italy
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9
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Liu L, Corma A. Isolated metal atoms and clusters for alkane activation: Translating knowledge from enzymatic and homogeneous to heterogeneous systems. Chem 2021. [DOI: 10.1016/j.chempr.2021.04.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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10
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Hall M. Enzymatic strategies for asymmetric synthesis. RSC Chem Biol 2021; 2:958-989. [PMID: 34458820 PMCID: PMC8341948 DOI: 10.1039/d1cb00080b] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 05/28/2021] [Indexed: 12/13/2022] Open
Abstract
Enzymes, at the turn of the 21st century, are gaining a momentum. Especially in the field of synthetic organic chemistry, a broad variety of biocatalysts are being applied in an increasing number of processes running at up to industrial scale. In addition to the advantages of employing enzymes under environmentally friendly reaction conditions, synthetic chemists are recognizing the value of enzymes connected to the exquisite selectivity of these natural (or engineered) catalysts. The use of hydrolases in enantioselective protocols paved the way to the application of enzymes in asymmetric synthesis, in particular in the context of biocatalytic (dynamic) kinetic resolutions. After two decades of impressive development, the field is now mature to propose a panel of catalytically diverse enzymes for (i) stereoselective reactions with prochiral compounds, such as double bond reduction and bond forming reactions, (ii) formal enantioselective replacement of one of two enantiotopic groups of prochiral substrates, as well as (iii) atroposelective reactions with noncentrally chiral compounds. In this review, the major enzymatic strategies broadly applicable in the asymmetric synthesis of optically pure chiral compounds are presented, with a focus on the reactions developed within the past decade.
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Affiliation(s)
- Mélanie Hall
- Institute of Chemistry, University of Graz Heinrichstrasse 28 8010 Graz Austria
- Field of Excellence BioHealth - University of Graz Austria
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11
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Castro KADF, Westrup KCM, Silva S, Pereira PMR, Simões MMQ, Neves MDGPMS, Cavaleiro JAS, Tomé JPC, Nakagaki S. Iron(III) Complexation with Galactodendritic Porphyrin Species and Hydrocarbons’ Oxidative Transformations. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kelly A. D. F. Castro
- Laboratório de Química Bioinorgânica e Catálise Universidade Federal do Paraná (UFPR) CP 19061, CEP 81531-980 Curitiba Paraná Brazil
- LAQV-REQUIMTE Department of Chemistry University of Aveiro 3810-193 Aveiro Portugal
| | - Kátia C. M. Westrup
- Laboratório de Química Bioinorgânica e Catálise Universidade Federal do Paraná (UFPR) CP 19061, CEP 81531-980 Curitiba Paraná Brazil
| | - Sandrina Silva
- LAQV-REQUIMTE Department of Chemistry University of Aveiro 3810-193 Aveiro Portugal
| | | | - Mário M. Q. Simões
- LAQV-REQUIMTE Department of Chemistry University of Aveiro 3810-193 Aveiro Portugal
| | | | - José A. S. Cavaleiro
- LAQV-REQUIMTE Department of Chemistry University of Aveiro 3810-193 Aveiro Portugal
| | - João P. C. Tomé
- Centro de Química Estrutural Instituto Superior Técnico Departamento de Química Universidade de Lisboa Av. Rovisco Pais 1049-001 Lisboa Portugal
| | - Shirley Nakagaki
- Laboratório de Química Bioinorgânica e Catálise Universidade Federal do Paraná (UFPR) CP 19061, CEP 81531-980 Curitiba Paraná Brazil
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12
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Aliphatic C–H hydroxylation activity and durability of a nickel complex catalyst according to the molecular structure of the bis(oxazoline) ligands. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111718] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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13
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Abufalgha AA, Pott RWM, Clarke KG. Quantification of oxygen transfer coefficients in simulated hydrocarbon-based bioprocesses in a bubble column bioreactor. Bioprocess Biosyst Eng 2021; 44:1913-1921. [PMID: 33893834 DOI: 10.1007/s00449-021-02571-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 04/09/2021] [Indexed: 12/01/2022]
Abstract
This study investigates the overall volumetric oxygen transfer coefficient (KLa) in multiphase hydrocarbon-based bioprocess under a range of hydrocarbon concentrations (HC), solid loadings (deactivated yeast) (SL) and superficial gas velocities (UG) in a bubble column reactor (BCR). KLa increased with increasing UG in the air-water system; due to an increase in the number of small bubbles which enhanced gas holdup. In air-water-yeast systems, the initial addition of yeast increased KLa significantly. Further increases in SL reduced KLa, due to increases in the bubble size with increasing SL. KLa decreased when HC was added in air-water-hydrocarbon systems. However, UG, SL and HC affected KLa differently in air-water-yeast-hydrocarbon systems: an indication of the complex interactions between the yeast and hydrocarbon phases which changed the system's hydrodynamics and therefore affected KL. This work illustrates the effect of the operating conditions (SL, HC and UG) on oxygen transfer behaviour in multiphase systems.
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Affiliation(s)
- Ayman A Abufalgha
- DST-NRF Centre of Excellence in Catalysis (c* Change), Pretoria, South Africa.,Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch, 7600, South Africa
| | - Robert W M Pott
- DST-NRF Centre of Excellence in Catalysis (c* Change), Pretoria, South Africa. .,Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch, 7600, South Africa.
| | - Kim G Clarke
- DST-NRF Centre of Excellence in Catalysis (c* Change), Pretoria, South Africa.,Department of Process Engineering, Stellenbosch University, Banghoek Road, Stellenbosch, 7600, South Africa
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14
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Kim S, Jeong HY, Kim S, Kim H, Lee S, Cho J, Kim C, Lee D. Proton Switch in the Secondary Coordination Sphere to Control Catalytic Events at the Metal Center: Biomimetic Oxo Transfer Chemistry of Nickel Amidate Complex. Chemistry 2021; 27:4700-4708. [PMID: 33427344 DOI: 10.1002/chem.202005183] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Indexed: 11/11/2022]
Abstract
High-valent metal-oxo species are key intermediates for the oxygen atom transfer step in the catalytic cycles of many metalloenzymes. While the redox-active metal centers of such enzymes are typically supported by anionic amino acid side chains or porphyrin rings, peptide backbones might function as strong electron-donating ligands to stabilize high oxidation states. To test the feasibility of this idea in synthetic settings, we have prepared a nickel(II) complex of new amido multidentate ligand. The mononuclear nickel complex of this N5 ligand catalyzes epoxidation reactions of a wide range of olefins by using mCPBA as a terminal oxidant. Notably, a remarkably high catalytic efficiency and selectivity were observed for terminal olefin substrates. We found that protonation of the secondary coordination sphere serves as the entry point to the catalytic cycle, in which high-valent nickel species is subsequently formed to carry out oxo-transfer reactions. A conceptually parallel process might allow metalloenzymes to control the catalytic cycle in the primary coordination sphere by using proton switch in the secondary coordination sphere.
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Affiliation(s)
- Soohyung Kim
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Ha Young Jeong
- Department of Fine Chemistry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Korea
| | - Seonghan Kim
- Department of Emerging Materials Science, DGIST, Daegu, 42988, Korea
| | - Hongsik Kim
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
| | - Sojeong Lee
- Department of Fine Chemistry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Korea
| | - Jaeheung Cho
- Department of Emerging Materials Science, DGIST, Daegu, 42988, Korea.,Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, Korea
| | - Cheal Kim
- Department of Fine Chemistry, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul, 01811, Korea
| | - Dongwhan Lee
- Department of Chemistry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Korea
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15
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Liu Y, Kooli F, Borgna A. Tandem dual bed Mo/HZSM-5 and Mo/HMCM-22 catalysts with enhanced catalytic performance for natural gas conversion to aromatics. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.09.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Wang R, Liu Y, Bi L. Synthesis of tetraruthenium (IV)-substituted tungstogermanate and catalytic oxidation of n-tetradecane under mild solvent-free conditions. J COORD CHEM 2020. [DOI: 10.1080/00958972.2020.1791322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ruiqiang Wang
- College of Chemistry, Jilin University, Changchun, P. R. China
| | - Yuzhong Liu
- First Hospital, Jilin University, Changchun, P. R. China
| | - Lihua Bi
- College of Chemistry, Jilin University, Changchun, P. R. China
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17
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Zhang X, Cockreham CB, Huang Z, Sun H, Yang C, Marin-Flores OG, Wang B, Guo X, Ha S, Xu H, Wu D. Thermodynamics of Water-Cationic Species-Framework Guest-Host Interactions within Transition Metal Ion-Exchanged Mordenite Relevant to Selective Anaerobic Oxidation of Methane to Methanol. J Phys Chem Lett 2020; 11:4774-4784. [PMID: 32452684 DOI: 10.1021/acs.jpclett.0c01331] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Low-temperature anaerobic methane conversion to methanol (MTM) using copper ion-exchanged mordenite (Cu-MOR) as the catalyst and water as the sole source of oxygen is promising for sustainable utilization of methane. Integrating in situ calorimetric, spectroscopic, and structural methodologies, we report a systematic study on energetics of water-cationic species-framework guest-host interactions as a function of water loading for several mordenites relevant to low-temperature MTM. Notably, the near-zero coverage hydration enthalpy on Cu-MOR is -133.1 ± 6.0 kJ/mol water, which is related to Cu-MOR regeneration using water as oxidant. The copper oxo sites are thermally stable up to 915 °C and remain chemically intact as an oxygen source after complete hydration and dehydration. This study underscores the importance of manipulating the oxidation state and coordination chemistry of transition metal guest species in zeolites by fine-tuning the partial pressure of water as a strategy for rational design, synthesis, and modification of catalysts.
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Affiliation(s)
- Xianghui Zhang
- Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99163, United States
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Cody B Cockreham
- Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99163, United States
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Zhiyang Huang
- Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99163, United States
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Hui Sun
- Petroleum Processing Research Center, East China University of Science and Technology, Shanghai 200237, China
- International Joint Research Center of Green Energy Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Chen Yang
- Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99163, United States
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Oscar G Marin-Flores
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Baodong Wang
- National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China
| | - Xiaofeng Guo
- Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99163, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99163, United States
- Materials Science and Engineering, Washington State University, Pullman, Washington 99163, United States
| | - Su Ha
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
| | - Hongwu Xu
- Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, United States
| | - Di Wu
- Alexandra Navrotsky Institute for Experimental Thermodynamics, Washington State University, Pullman, Washington 99163, United States
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, Washington 99163, United States
- Department of Chemistry, Washington State University, Pullman, Washington 99163, United States
- Materials Science and Engineering, Washington State University, Pullman, Washington 99163, United States
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Kumar Pal C, Mahato S, Joshi M, Paul S, Roy Choudhury A, Biswas B. Transesterification activity by a zinc(II)-Schiff base complex with theoretical interpretation. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119541] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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19
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Faiza M, Lan D, Huang S, Wang Y. UPObase: an online database of unspecific peroxygenases. DATABASE-THE JOURNAL OF BIOLOGICAL DATABASES AND CURATION 2020; 2019:5670758. [PMID: 31820805 PMCID: PMC6902001 DOI: 10.1093/database/baz122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Revised: 08/23/2019] [Accepted: 09/17/2019] [Indexed: 11/13/2022]
Abstract
There are many unspecific peroxygenases (UPOs) or UPO-like extracellular enzymes secreted by fungal species. These enzymes are considered special in their ways of catalyzing a wide variety of reactions such as epoxidation, peroxygenation and electron oxidations. This enzyme family exhibits diverse functions with thousands of UPOs and UPO-like sequences. These sequences are difficult to analyze without proper management tool and therefore desperately calls for a unified platform that can aide with annotation, classification, navigation and easy sequence retrieval. This prompted us to create an online database called Unspecific Peroxygenase Database (UPObase) (upobase.bioinformaticsreview.com) which currently includes 1948 peroxygenase-encoding protein sequences mined from more than 800 available fungal genomes. It provides information such as classification and motifs about each sequence and has functions such as homology search against UPObase sequence analyses such as multiple sequence alignments and phylogenetic trees. It also provides a new sequence submission facility. The database has been made user-friendly facilitating systematic search and filters. UPObase allows users to search for the sequences by organism name, cluster ID and accession number. Notably, in our previous study, 113 UPOs were classified into five subfamilies (I, II, III, IV and V) and an undetermined group (Pog) which remain established. In this study, using 1948 UPOs in our database, we were able to further identify six novel sub-superfamilies (Pog-a, Pog-b, Pog-c, Pog-d, Pog-e and Pog-f) with signature motifs and two distinct groups in Subfamily I and III, Ia and Ib, IIIa and IIIb, respectively. With the novel UPO-like sequences and classification, UPObase may serve for researchers working in the area of enzyme engineering and related fields.
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Affiliation(s)
- Muniba Faiza
- School of Food Science and Engineering, South China University of Technology, Wushan road, Tianhe district, Guangzhou 510640, Guangdong province, China
| | - Dongming Lan
- School of Food Science and Engineering, South China University of Technology, Wushan road, Tianhe district, Guangzhou 510640, Guangdong province, China
| | - Shengfeng Huang
- Laboratory for Marine Biology and Biotechnology, Pilot National Laboratory for Marine Science and Technology (Qingdao) 1 Wenhai road, Aoshanwei, Jimo, Qingdao, Shandong, 266237, China.,State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, No., 135, Xingang Xi road, Guangzhou, 510275, China
| | - Yonghua Wang
- School of Food Science and Engineering, South China University of Technology, Wushan road, Tianhe district, Guangzhou 510640, Guangdong province, China
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Wiltschi B, Cernava T, Dennig A, Galindo Casas M, Geier M, Gruber S, Haberbauer M, Heidinger P, Herrero Acero E, Kratzer R, Luley-Goedl C, Müller CA, Pitzer J, Ribitsch D, Sauer M, Schmölzer K, Schnitzhofer W, Sensen CW, Soh J, Steiner K, Winkler CK, Winkler M, Wriessnegger T. Enzymes revolutionize the bioproduction of value-added compounds: From enzyme discovery to special applications. Biotechnol Adv 2020; 40:107520. [DOI: 10.1016/j.biotechadv.2020.107520] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 10/18/2019] [Accepted: 01/13/2020] [Indexed: 12/11/2022]
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Peng Y, Li D, Fan J, Xu W, Xu J, Yu H, Lin X, Wu Q. Enantiocomplementary C-H Bond Hydroxylation Combining Photo-Catalysis and Whole-Cell Biocatalysis in a One-Pot Cascade Process. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901682] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yongzhen Peng
- Department of Chemistry; Zhejiang University; 310027 Hangzhou China
| | - Danyang Li
- Department of Chemistry; Zhejiang University; 310027 Hangzhou China
| | - Jiajie Fan
- Department of Chemistry; Zhejiang University; 310027 Hangzhou China
| | - Weihua Xu
- Department of Chemistry; Zhejiang University; 310027 Hangzhou China
| | - Jian Xu
- Department of Chemistry; Zhejiang University; 310027 Hangzhou China
| | - Huilei Yu
- State Key Laboratory of Bioreactor Engineering; East China University of Science and Technology; 200237 Shanghai China
| | - Xianfu Lin
- Department of Chemistry; Zhejiang University; 310027 Hangzhou China
| | - Qi Wu
- Department of Chemistry; Zhejiang University; 310027 Hangzhou China
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22
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Liu Y, You T, Wang HX, Tang Z, Zhou CY, Che CM. Iron- and cobalt-catalyzed C(sp3)–H bond functionalization reactions and their application in organic synthesis. Chem Soc Rev 2020; 49:5310-5358. [DOI: 10.1039/d0cs00340a] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This review highlights the developments in iron and cobalt catalyzed C(sp3)–H bond functionalization reactions with emphasis on their applications in organic synthesis, i.e. natural products and pharmaceuticals synthesis and/or modification.
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Affiliation(s)
- Yungen Liu
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- P. R. China
| | - Tingjie You
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- Hong Kong
- P. R. China
| | - Hai-Xu Wang
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- Hong Kong
- P. R. China
| | - Zhou Tang
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- Hong Kong
- P. R. China
| | - Cong-Ying Zhou
- Department of Chemistry
- State Key Laboratory of Synthetic Chemistry
- The University of Hong Kong
- Hong Kong
- P. R. China
| | - Chi-Ming Che
- Department of Chemistry
- Southern University of Science and Technology
- Shenzhen
- P. R. China
- Department of Chemistry
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23
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Unjaroen D, Gericke R, Lovisari M, Nelis D, Mondal P, Pirovano P, Twamley B, Farquhar ER, McDonald AR. High-Valent d 7 Ni III versus d 8 Cu III Oxidants in PCET. Inorg Chem 2019; 58:16838-16848. [PMID: 31804808 DOI: 10.1021/acs.inorgchem.9b03101] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Oxygenases have been postulated to utilize d4 FeIV and d8 CuIII oxidants in proton-coupled electron transfer (PCET) hydrocarbon oxidation. In order to explore the influence the metal ion and d-electron count can hold over the PCET reactivity, two metastable high-valent metal-oxygen adducts, [NiIII(OAc)(L)] (1b) and [CuIII(OAc)(L)] (2b), L = N,N'-(2,6-diisopropylphenyl)-2,6-pyridinedicarboxamidate, were prepared from their low-valent precursors [NiII(OAc)(L)]- (1a) and [CuII(OAc)(L)]- (2a). The complexes 1a/b-2a/b were characterized using nuclear magnetic resonance, Fourier transform infrared, electron paramagnetic resonance, X-ray diffraction, and absorption spectroscopies and mass spectrometry. Both complexes were capable of activating substrates through a concerted PCET mechanism (hydrogen atom transfer, HAT, or concerted proton and electron transfer, CPET). The reactivity of 1b and 2b toward a series of para-substituted 2,6-di-tert-butylphenols (p-X-2,6-DTBP; X = OCH3, C(CH3)3, CH3, H, Br, CN, NO2) was studied, showing similar rates of reaction for both complexes. In the oxidation of xanthene, the d8 CuIII oxidant displayed a small increase in the rate constant compared to that of the d7 NiIII oxidant. The d8 CuIII oxidant was capable of oxidizing a large family of hydrocarbon substrates with bond dissociation enthalpy (BDEC-H) values up to 90 kcal/mol. It was previously observed that exchanging the ancillary anionic donor ligand in such complexes resulted in a 20-fold enhancement in the rate constant, an observation that is further enforced by comparison of 1b and 2b to the literature precedents. In contrast, we observed only minor differences in the rate constants upon comparing 1b to 2b. It was thus concluded that in this case the metal ion has a minor impact, while the ancillary donor ligand yields more kinetic control over HAT/CPET oxidation.
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Affiliation(s)
- Duenpen Unjaroen
- School of Chemistry, Trinity College Dublin , The University of Dublin , College Green , Dublin 2 , Ireland
| | - Robert Gericke
- School of Chemistry, Trinity College Dublin , The University of Dublin , College Green , Dublin 2 , Ireland
| | - Marta Lovisari
- School of Chemistry, Trinity College Dublin , The University of Dublin , College Green , Dublin 2 , Ireland
| | - Daniel Nelis
- School of Chemistry, Trinity College Dublin , The University of Dublin , College Green , Dublin 2 , Ireland
| | - Prasenjit Mondal
- School of Chemistry, Trinity College Dublin , The University of Dublin , College Green , Dublin 2 , Ireland
| | - Paolo Pirovano
- School of Chemistry, Trinity College Dublin , The University of Dublin , College Green , Dublin 2 , Ireland
| | - Brendan Twamley
- School of Chemistry, Trinity College Dublin , The University of Dublin , College Green , Dublin 2 , Ireland
| | - Erik R Farquhar
- Case Western Reserve University Center for Synchrotron Biosciences, National Synchrotron Light Source II , Brookhaven National Laboratory II , Upton , New York 11973 , United States
| | - Aidan R McDonald
- School of Chemistry, Trinity College Dublin , The University of Dublin , College Green , Dublin 2 , Ireland
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Pal CK, Mahato S, Yadav HR, Shit M, Choudhury AR, Biswas B. Bio-mimetic of catecholase and phosphatase activity by a tetra-iron(III) cluster. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.114156] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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He Q, Bennett GN, San KY, Wu H. Biosynthesis of Medium-Chain ω-Hydroxy Fatty Acids by AlkBGT of Pseudomonas putida GPo1 With Native FadL in Engineered Escherichia coli. Front Bioeng Biotechnol 2019; 7:273. [PMID: 31681749 PMCID: PMC6812396 DOI: 10.3389/fbioe.2019.00273] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 10/01/2019] [Indexed: 12/19/2022] Open
Abstract
Hydroxy fatty acids (HFAs) are valuable compounds that are widely used in medical, cosmetic and food fields. Production of ω-HFAs via bioconversion by engineered Escherichia coli has received a lot of attention because this process is environmentally friendly. In this study, a whole-cell bio-catalysis strategy was established to synthesize medium-chain ω-HFAs based on the AlkBGT hydroxylation system from Pseudomonas putida GPo1. The effects of blocking the β-oxidation of fatty acids (FAs) and enhancing the transportation of FAs on ω-HFAs bio-production were also investigated. When fadE and fadD were deleted, the consumption of decanoic acid decreased, and the yield of ω-hydroxydecanoic acid was enhanced remarkably. Additionally, the co-expression of the FA transporter protein, FadL, played an important role in increasing the conversion rate of ω-hydroxydecanoic acid. As a result, the concentration and yield of ω-hydroxydecanoic acid in NH03(pBGT-fadL) increased to 309 mg/L and 0.86 mol/mol, respectively. This whole-cell bio-catalysis system was further applied to the biosynthesis of ω-hydroxyoctanoic acid and ω-hydroxydodecanoic acid using octanoic acid and dodecanoic acid as substrates, respectively. The concentrations of ω-hydroxyoctanoic acid and ω-hydroxydodecanoic acid reached 275.48 and 249.03 mg/L, with yields of 0.63 and 0.56 mol/mol, respectively. This study demonstrated that the overexpression of AlkBGT coupled with native FadL is an efficient strategy to synthesize medium-chain ω-HFAs from medium-chain FAs in fadE and fadD mutant E. coli strains.
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Affiliation(s)
- Qiaofei He
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
| | - George N. Bennett
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, United States
| | - Ka-Yiu San
- Department of Bioengineering, Rice University, Houston, TX, United States
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, TX, United States
| | - Hui Wu
- State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, China
- Shanghai Collaborative Innovation Center for Biomanufacturing Technology, Shanghai, China
- Key Laboratory of Bio-based Material Engineering of China National Light Industry Council, Shanghai, China
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26
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Terencio T, Andris E, Gamba I, Srnec M, Costas M, Roithová J. Chemoselectivity in the Oxidation of Cycloalkenes with a Non-Heme Iron(IV)-Oxo-Chloride Complex: Epoxidation vs. Hydroxylation Selectivity. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:1923-1933. [PMID: 31399940 PMCID: PMC6805805 DOI: 10.1007/s13361-019-02251-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/15/2019] [Accepted: 05/15/2019] [Indexed: 06/10/2023]
Abstract
We report and analyze chemoselectivity in the gas phase reactions of cycloalkenes (cyclohexene, cycloheptene, cis-cyclooctene, 1,4-cyclohexadiene) with a non-heme iron(IV)-oxo complex [(PyTACN)Fe(O)(Cl)]+, which models the active species in iron-dependent halogenases. Unlike in the halogenases, we did not observe any chlorination of the substrate. However, we observed two other reaction pathways: allylic hydrogen atom transfer (HAT) and alkene epoxidation. The HAT is clearly preferred in the case of 1,4-cyclohexadiene, both pathways have comparable reaction rates in reaction with cyclohexene, and epoxidation is strongly favored in reactions with cycloheptene and cis-cyclooctene. This preference for epoxidation differs from the reactivity of iron(IV)-oxo complexes in the condensed phase, where HAT usually prevails. To understand the observed selectivity, we analyze effects of the substrate, spin state, and solvation. Our DFT and CASPT2 calculations suggest that all the reactions occur on the quintet potential energy surface. The DFT-calculated energies of the transition states for the epoxidation and hydroxylation pathways explain the observed chemoselectivity. The SMD implicit solvation model predicts the relative increase of the epoxidation barriers with solvent polarity, which explains the clear preference of HAT in the condensed phase.
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Affiliation(s)
- Thibault Terencio
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43, Prague 2, Czech Republic
- School of Chemical Science and Engineering, Yachay Tech University, 100650, Yachay City of Knowledge, Urcuqui, Ecuador
| | - Erik Andris
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43, Prague 2, Czech Republic
| | - Ilaria Gamba
- Departament de Quimica and Institute of Computational Chemistry and Catalysis (IQCC), University of Girona, Campus Montilivi, 17071, Girona, Spain
| | - Martin Srnec
- J. Heyrovsky Institute of Physical Chemistry of the CAS, v. v. i., Dolejškova 2155/3, 182 23, Prague 8, Czech Republic.
| | - Miquel Costas
- Departament de Quimica and Institute of Computational Chemistry and Catalysis (IQCC), University of Girona, Campus Montilivi, 17071, Girona, Spain.
| | - Jana Roithová
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 2030/8, 128 43, Prague 2, Czech Republic.
- Institute for Molecules and Materials, Radboud University Nijmegen, Heyendaalseweg 135, 6525 AJ, Nijmegen, Netherlands.
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27
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Efficient oxidation of benzene catalyzed by Cu(II) tetrazolato complexes under mild conditions. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.05.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Martins NM, Pombeiro AJ, Martins LM. Green oxidation of cyclohexane catalyzed by recyclable magnetic transition-metal silica coated nanoparticles. CATAL COMMUN 2019. [DOI: 10.1016/j.catcom.2019.03.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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Sheet D, Bera A, Jana RD, Paine TK. Oxidizing Ability of a Dioxygen-Activating Nonheme Iron(II)-Benzilate Complex Immobilized on Gold Nanoparticles. Inorg Chem 2019; 58:4828-4841. [PMID: 30916560 DOI: 10.1021/acs.inorgchem.8b03288] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
An iron(II)-benzilate complex [(TPASH)FeII(benzilate)]ClO4@C8Au (2) (TPASH = 11-((6-((bis(pyridin-2-ylmethyl)amino)methyl)pyridin-2-yl)methoxy)undecane-1-thiol) immobilized on octanethiol stabilized gold nanoparticles (C8Au) of core diameter less than 5 nm has been prepared to evaluate its reactivity toward O2-dependent oxidations compared to a nonimmobilized complex [(TPA-O-Allyl)FeII(benzilate)]ClO4 (1a) (TPA-O-Allyl = N-((6-(allyloxymethyl)pyridin-2-yl)methyl)(pyridin-2-yl)- N-(pyridin-2-ylmethyl)methanamine). X-ray crystal structure of the nonimmobilized complex 1a reveals a six-coordinate iron(II) center in which the TPA-O-Allyl acts as a pentadentate ligand and the benzilate anion binds in monodentate fashion. Both the complexes (1a and 2) react with dioxygen under ambient conditions to form benzophenone as the sole product through decarboxylation of the coordinated benzilate. Interception studies reveal that a nucleophilic iron-oxygen intermediate is formed in the decarboxylation reaction. The oxidants from both the complexes are able to carry out oxo atom transfer reactions. The immobilized complex 2 not only performs faster decarboxylation but also exhibits enhanced reactivity in oxo atom transfer to sulfides. Importantly, the immobilized complex 2, unlike 1a, displays catalytic turnovers in sulfide oxidation. However, the complexes are not efficient to carry out cis-dihydroxylation of alkenes. Although the immobilized complex yields a slightly higher amount of cis-diol from 1-octene, restricted access of dioxygen and substrates at the coordinatively saturated metal centers of the complexes likely makes the resulting iron-oxygen species less active in oxygen atom transfer to alkenes. The results implicate that surface immobilized nonheme iron complexes containing accessible coordination sites would exhibit better reactivity in O2-dependent oxygenation reactions.
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Affiliation(s)
- Debobrata Sheet
- School of Chemical Sciences , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road , Jadavpur, Kolkata 700032 , India
| | - Abhijit Bera
- School of Chemical Sciences , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road , Jadavpur, Kolkata 700032 , India
| | - Rahul Dev Jana
- School of Chemical Sciences , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road , Jadavpur, Kolkata 700032 , India
| | - Tapan Kanti Paine
- School of Chemical Sciences , Indian Association for the Cultivation of Science , 2A & 2B Raja S. C. Mullick Road , Jadavpur, Kolkata 700032 , India
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Structure-Guided Immobilization of an Evolved Unspecific Peroxygenase. Int J Mol Sci 2019; 20:ijms20071627. [PMID: 30986901 PMCID: PMC6480235 DOI: 10.3390/ijms20071627] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/25/2019] [Accepted: 03/29/2019] [Indexed: 11/29/2022] Open
Abstract
Unspecific peroxygenases (UPOs) are highly promiscuous biocatalyst with self-sufficient mono(per)oxygenase activity. A laboratory-evolved UPO secreted by yeast was covalently immobilized in activated carriers through one-point attachment. In order to maintain the desired orientation without compromising the enzyme’s activity, the S221C mutation was introduced at the surface of the enzyme, enabling a single disulfide bridge to be established between the support and the protein. Fluorescence confocal microscopy demonstrated the homogeneous distribution of the enzyme, regardless of the chemical nature of the carrier. This immobilized biocatalyst was characterized biochemically opening an exciting avenue for research into applied synthetic chemistry.
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McManus C, Mondal P, Lovisari M, Twamley B, McDonald AR. Carboxamidate Ligand Noninnocence in Proton Coupled Electron Transfer. Inorg Chem 2019; 58:4515-4523. [PMID: 30864788 DOI: 10.1021/acs.inorgchem.9b00055] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Caitilín McManus
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Prasenjit Mondal
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Marta Lovisari
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Brendan Twamley
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Aidan R. McDonald
- School of Chemistry, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
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32
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Faiza M, Huang S, Lan D, Wang Y. New insights on unspecific peroxygenases: superfamily reclassification and evolution. BMC Evol Biol 2019; 19:76. [PMID: 30866798 PMCID: PMC6417270 DOI: 10.1186/s12862-019-1394-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/20/2019] [Indexed: 11/24/2022] Open
Abstract
Background Unspecific peroxygenases (UPO) (EC 1.11.2.1) represent an intriguing oxidoreductase sub-subclass of heme proteins with peroxygenase and peroxidase activity. With over 300 identified substrates, UPOs catalyze numerous oxidations including 1- or 2- electron oxygenation, selective oxyfunctionalizations, which make them most significant in organic syntheses and potentially attractive as industrial biocatalysts. There are very few UPOs available with distinct properties, notably, MroUPO which shows behavior ranging between UPO and another heme-thiolate peroxidase, called Chloroperoxidase (CPO). It prompted us to search for more UPOs in fungal kingdom which led us to studying their relationship with CPO. Results In this study, we searched for novel UPOs in more than 800 fungal genomes and found 113 putative UPO-encoding sequences distributed in 35 different fungal species (or strains), amongst which single sequence per species were subjected to phylogeny study along with CPOs. Our phylogenetic study show that the UPOs are distributed in Basidiomycota and Ascomycota phyla of fungi. The sequence analysis helped to classify the UPOs into five distinct subfamilies: classic AaeUPO and four new subfamilies with potential new traits. We have also shown that each of these five subfamilies (supported by) have their own signature motifs. Surprisingly, some of the CPOs appeared to be a type of UPOs indicating that they were previously identified incorrectly. Selection pressure was observed on important motifs in UPOs which could have driven their functional divergence. Furthermore, the sites having different evolutionary rates caused by the functional divergence were also identified on some motifs along with the other relevant amino acid residues. Finally, we predicted critical amino acids responsible for the functional divergence in the UPOs and identified some sequence differences among UPOs, CPOs, and MroUPO to predict it’s ranging behavior. Conclusion This study discovers new UPOs, provides a glimpse of their evolution from CPOs, and presents new insight on their functional divergence. We present a new classification of UPOs and shed new light on its phylogenetics. These different UPOs may exhibit a wide range of characteristics and specificities which may help in various fields of synthetic chemistry and industrial biocatalysts, and may as well lead to an advancement towards the understanding of physiological role of UPOs in fungi. Electronic supplementary material The online version of this article (10.1186/s12862-019-1394-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Muniba Faiza
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Shengfeng Huang
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China. .,State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen University, Guangzhou, China.
| | - Dongming Lan
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China
| | - Yonghua Wang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
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33
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Dey D, Patra M, Al-Hunaiti A, Yadav HR, Al-mherat A, Arar S, Maji M, Choudhury AR, Biswas B. Synthesis, structural characterization and C H activation property of a tetra-iron(III) cluster. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.11.062] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Bao J, Yang G, Yoneyama Y, Tsubaki N. Significant Advances in C1 Catalysis: Highly Efficient Catalysts and Catalytic Reactions. ACS Catal 2019. [DOI: 10.1021/acscatal.8b03924] [Citation(s) in RCA: 166] [Impact Index Per Article: 33.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jun Bao
- National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, University of Science and Technology of China, Hefei 230029, P.R. China
| | - Guohui Yang
- Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, P.R. China
| | - Yoshiharu Yoneyama
- Department of Applied Chemistry, School of Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan
| | - Noritatsu Tsubaki
- Department of Applied Chemistry, School of Engineering, University of Toyama, Gofuku 3190, Toyama 930-8555, Japan
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35
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Yamada Y, Morita K, Mihara N, Igawa K, Tomooka K, Tanaka K. Catalytic methane oxidation by a supramolecular conjugate based on a μ-nitrido-bridged iron porphyrinoid dimer. NEW J CHEM 2019. [DOI: 10.1039/c9nj02210d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Catalytic CH4 oxidation using a μ-nitrido-bridged iron porphyrinoid dimer was successfully activated by supramolecular complexation.
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Affiliation(s)
- Yasuyuki Yamada
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Kentaro Morita
- Research Center for Materials Science
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Nozomi Mihara
- Research Center for Materials Science
- Nagoya University
- Nagoya 464-8602
- Japan
| | - Kazunobu Igawa
- Institute for Materials Chemistry and Engineering, and IRCCS, Kyushu University
- Fukuoka
- Japan
| | - Katsuhiko Tomooka
- Institute for Materials Chemistry and Engineering, and IRCCS, Kyushu University
- Fukuoka
- Japan
| | - Kentaro Tanaka
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Nagoya 464-8602
- Japan
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36
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Chatterjee S, Bhattacharya S, Paine TK. Bioinspired Olefin cis-Dihydroxylation and Aliphatic C–H Bond Hydroxylation with Dioxygen Catalyzed by a Nonheme Iron Complex. Inorg Chem 2018; 57:10160-10169. [DOI: 10.1021/acs.inorgchem.8b01353] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Sayanti Chatterjee
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Shrabanti Bhattacharya
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Tapan Kanti Paine
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
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37
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Chen X, Deng K, Zhou P, Zhang Z. Metal- and Additive-Free Oxidation of Sulfides into Sulfoxides by Fullerene-Modified Carbon Nitride with Visible-Light Illumination. CHEMSUSCHEM 2018; 11:2444-2452. [PMID: 29797801 DOI: 10.1002/cssc.201800450] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Indexed: 06/08/2023]
Abstract
Photocatalytic selective oxidation has attracted considerable attention as an environmentally friendly strategy for organic transformations. Some methods have been reported for the photocatalytic oxidation of sulfides into sulfoxides in recent years. However, the practical application of these processes is undermined by several challenges, such as low selectivity, sluggish reaction rates, the requirement of UV-light irradiation, the use of additives, and the instability of the photocatalyst. Herein, a metal-free C60 /graphitic carbon nitride (g-C3 N4 ) composite photocatalyst was fabricated by a facile method, and well characterized by TEM, SEM, FTIR spectroscopy, XRD, X-ray photoelectron spectroscopy, diffuse reflectance spectroscopy, and photoluminescence spectroscopy. The C60 /g-C3 N4 catalyst exhibited a high photocatalytic activity at room temperature for the selective oxidation of sulfides into the corresponding sulfoxides in the presence of other functional groups, due to the synergetic roles of C60 and g-C3 N4 . Several important parameters have been screened, and this method afforded good to excellent yields of sulfoxides under optimal conditions. The superoxide radical (. O2- ) and singlet oxygen (1 O2 ) were identified as the oxidative species for the oxidation of sulfides into sulfoxides by exploring EPR experiments, and hence, a plausible mechanism for this oxidation was proposed. Moreover, the C60 /g-C3 N4 catalyst can be easily recovered by filtration and then reused at least four times without loss in activity.
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Affiliation(s)
- Xi Chen
- Key Laboratory of Catalysis and Materials Sciences of the, Ministry of Education, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Kejian Deng
- Key Laboratory of Catalysis and Materials Sciences of the, Ministry of Education, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Peng Zhou
- Key Laboratory of Catalysis and Materials Sciences of the, Ministry of Education, South-Central University for Nationalities, Wuhan, 430074, PR China
| | - Zehui Zhang
- Key Laboratory of Catalysis and Materials Sciences of the, Ministry of Education, South-Central University for Nationalities, Wuhan, 430074, PR China
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38
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Galle LM, Cutsail Iii GE, Nischwitz V, DeBeer S, Span I. Spectroscopic characterization of the Co-substituted C-terminal domain of rubredoxin-2. Biol Chem 2018; 399:787-798. [PMID: 29894292 DOI: 10.1515/hsz-2018-0142] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Accepted: 04/25/2018] [Indexed: 11/15/2022]
Abstract
Pseudomonas putida rubredoxin-2 (Rxn2) is an essential member of the alkane hydroxylation pathway and transfers electrons from a reductase to the membrane-bound hydroxylase. The regioselective hydroxylation of linear alkanes is a challenging chemical transformation of great interest for the chemical industry. Herein, we report the preparation and spectroscopic characterization of cobalt-substituted P. putida Rxn2 and a truncated version of the protein consisting of the C-terminal domain of the protein. Our spectroscopic data on the Co-substituted C-terminal domain supports a high-spin Co(II) with a distorted tetrahedral coordination environment. Investigation of the two-domain protein Rxn2 provides insights into the metal-binding properties of the N-terminal domain, the role of which is not well understood so far. Circular dichroism, electron paramagnetic resonance and X-ray absorption spectroscopies support an alternative Co-binding site within the N-terminal domain, which appears to not be relevant in nature. We have shown that chemical reconstitution in the presence of Co leads to incorporation of Co(II) into the active site of the C-terminal domain, but not the N-terminal domain of Rxn2 indicating distinct roles for the two rubredoxin domains.
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Affiliation(s)
- Lisa M Galle
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
| | - George E Cutsail Iii
- Max Planck Institute for Chemical Energy Conversion, D-45470 Mülheim an der Ruhr, Germany
| | - Volker Nischwitz
- Central Institute for Engineering, Electronics and Analytics (ZEA-3), Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - Serena DeBeer
- Max Planck Institute for Chemical Energy Conversion, D-45470 Mülheim an der Ruhr, Germany
| | - Ingrid Span
- Institut für Physikalische Biologie, Heinrich-Heine-Universität Düsseldorf, Universitätsstr. 1, D-40225 Düsseldorf, Germany
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39
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Park H, Ahn HM, Jeong HY, Kim C, Lee D. Non-Heme Iron Catalysts for Olefin Epoxidation: Conformationally Rigid Aryl-Aryl Junction To Support Amine/Imine Multidentate Ligands. Chemistry 2018; 24:8632-8638. [DOI: 10.1002/chem.201800447] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Hyunchang Park
- Department of Chemistry; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Korea
| | - Hye Mi Ahn
- Department of Fine Chemistry; Seoul National University of Science and Technology; 232 Gongneung-ro Nowon-gu Seoul 01811 Korea
| | - Ha Young Jeong
- Department of Fine Chemistry; Seoul National University of Science and Technology; 232 Gongneung-ro Nowon-gu Seoul 01811 Korea
| | - Cheal Kim
- Department of Fine Chemistry; Seoul National University of Science and Technology; 232 Gongneung-ro Nowon-gu Seoul 01811 Korea
| | - Dongwhan Lee
- Department of Chemistry; Seoul National University; 1 Gwanak-ro Gwanak-gu Seoul 08826 Korea
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40
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Affiliation(s)
- Yujie Liang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Jialiang Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Xu Qiu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Road 38, Beijing 100191, China
- State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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41
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Mondal P, Pirovano P, Das A, Farquhar ER, McDonald AR. Hydrogen Atom Transfer by a High-Valent Nickel-Chloride Complex. J Am Chem Soc 2018; 140:1834-1841. [DOI: 10.1021/jacs.7b11953] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Prasenjit Mondal
- School
of Chemistry and CRANN/AMBER Nanoscience Institute, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Paolo Pirovano
- School
of Chemistry and CRANN/AMBER Nanoscience Institute, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Ankita Das
- School
of Chemistry and CRANN/AMBER Nanoscience Institute, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
| | - Erik R. Farquhar
- Case
Western Reserve University Center for Synchrotron Biosciences, National Synchrotron Light Source II, Brookhaven National Laboratory II, Upton, New York 11973, United States
| | - Aidan R. McDonald
- School
of Chemistry and CRANN/AMBER Nanoscience Institute, Trinity College Dublin, The University of Dublin, College Green, Dublin 2, Ireland
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42
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Kosinov N, Wijpkema ASG, Uslamin E, Rohling R, Coumans FJAG, Mezari B, Parastaev A, Poryvaev AS, Fedin MV, Pidko EA, Hensen EJM. Confined Carbon Mediating Dehydroaromatization of Methane over Mo/ZSM-5. Angew Chem Int Ed Engl 2018; 57:1016-1020. [PMID: 29181863 PMCID: PMC5820752 DOI: 10.1002/anie.201711098] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 11/25/2017] [Indexed: 11/10/2022]
Abstract
Non-oxidative dehydroaromatization of methane (MDA) is a promising catalytic process for direct valorization of natural gas to liquid hydrocarbons. The application of this reaction in practical technology is hindered by a lack of understanding about the mechanism and nature of the active sites in benchmark zeolite-based Mo/ZSM-5 catalysts, which precludes the solution of problems such as rapid catalyst deactivation. By applying spectroscopy and microscopy, it is shown that the active centers in Mo/ZSM-5 are partially reduced single-atom Mo sites stabilized by the zeolite framework. By combining a pulse reaction technique with isotope labeling of methane, MDA is shown to be governed by a hydrocarbon pool mechanism in which benzene is derived from secondary reactions of confined polyaromatic carbon species with the initial products of methane activation.
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Affiliation(s)
- Nikolay Kosinov
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
| | - Alexandra S. G. Wijpkema
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
| | - Evgeny Uslamin
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
| | - Roderigh Rohling
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
| | - Ferdy J. A. G. Coumans
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
| | - Brahim Mezari
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
| | - Alexander Parastaev
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
| | - Artem S. Poryvaev
- International Tomography Center SB RAS andNovosibirsk State UniversityNovosibirsk630090Russia
| | - Matvey V. Fedin
- International Tomography Center SB RAS andNovosibirsk State UniversityNovosibirsk630090Russia
| | - Evgeny A. Pidko
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials ChemistryEindhoven University of TechnologyPO Box 513, 5600MBEindhovenThe Netherlands
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43
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Kosinov N, Wijpkema ASG, Uslamin E, Rohling R, Coumans FJAG, Mezari B, Parastaev A, Poryvaev AS, Fedin MV, Pidko EA, Hensen EJM. Confined Carbon Mediating Dehydroaromatization of Methane over Mo/ZSM-5. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711098] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nikolay Kosinov
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
| | - Alexandra S. G. Wijpkema
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
| | - Evgeny Uslamin
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
| | - Roderigh Rohling
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
| | - Ferdy J. A. G. Coumans
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
| | - Brahim Mezari
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
| | - Alexander Parastaev
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
| | - Artem S. Poryvaev
- International Tomography Center SB RAS and; Novosibirsk State University; Novosibirsk 630090 Russia
| | - Matvey V. Fedin
- International Tomography Center SB RAS and; Novosibirsk State University; Novosibirsk 630090 Russia
| | - Evgeny A. Pidko
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
| | - Emiel J. M. Hensen
- Laboratory of Inorganic Materials Chemistry; Eindhoven University of Technology; PO Box 513, 5600 MB Eindhoven The Netherlands
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44
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Alkane oxidation reactivity of homogeneous and heterogeneous metal complex catalysts with mesoporous silica-immobilized (2-pyridylmethyl)amine type ligands. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.09.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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45
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Dennig A, Weingartner AM, Kardashliev T, Müller CA, Tassano E, Schürmann M, Ruff AJ, Schwaneberg U. An Enzymatic Route to α-Tocopherol Synthons: Aromatic Hydroxylation of Pseudocumene and Mesitylene with P450 BM3. Chemistry 2017; 23:17981-17991. [PMID: 28990705 DOI: 10.1002/chem.201703647] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Indexed: 02/06/2023]
Abstract
Aromatic hydroxylation of pseudocumene (1 a) and mesitylene (1 b) with P450 BM3 yields key phenolic building blocks for α-tocopherol synthesis. The P450 BM3 wild-type (WT) catalyzed selective aromatic hydroxylation of 1 b (94 %), whereas 1 a was hydroxylated to a large extent on benzylic positions (46-64 %). Site-saturation mutagenesis generated a new P450 BM3 mutant, herein named "variant M3" (R47S, Y51W, A330F, I401M), with significantly increased coupling efficiency (3- to 8-fold) and activity (75- to 230-fold) for the conversion of 1 a and 1 b. Additional π-π interactions introduced by mutation A330F improved not only productivity and coupling efficiency, but also selectivity toward aromatic hydroxylation of 1 a (61 to 75 %). Under continuous nicotinamide adenine dinucleotide phosphate recycling, the novel P450 BM3 variant M3 was able to produce the key tocopherol precursor trimethylhydroquinone (3 a; 35 % selectivity; 0.18 mg mL-1 ) directly from 1 a. In the case of 1 b, overoxidation leads to dearomatization and the formation of a valuable p-quinol synthon that can directly serve as an educt for the synthesis of 3 a. Detailed product pattern analysis, substrate docking, and mechanistic considerations support the hypothesis that 1 a binds in an inverted orientation in the active site of P450 BM3 WT, relative to P450 BM3 variant M3, to allow this change in chemoselectivity. This study provides an enzymatic route to key phenolic synthons for α-tocopherols and the first catalytic and mechanistic insights into direct aromatic hydroxylation and dearomatization of trimethylbenzenes with O2 .
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Affiliation(s)
- Alexander Dennig
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | | | - Tsvetan Kardashliev
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | | | - Erika Tassano
- Department of Chemistry, University of Graz, Heinrichstrasse 28, 8010, Graz, Austria
| | - Martin Schürmann
- DSM Ahead R&D BV/DSM Innovative Synthesis, Post address: P.O. Box 1066, 6160 BB, Geleen, The Netherlands
| | - Anna Joëlle Ruff
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany
| | - Ulrich Schwaneberg
- Institute of Biotechnology, RWTH Aachen University, Worringerweg 3, 52074, Aachen, Germany.,DWI-Leibniz Institut für Interaktive Materialien, Forckenbeckstraße 50, 52074, Aachen, Germany
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46
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Tang X, Jia X, Huang Z. Challenges and opportunities for alkane functionalisation using molecular catalysts. Chem Sci 2017; 9:288-299. [PMID: 29629098 PMCID: PMC5870200 DOI: 10.1039/c7sc03610h] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 11/07/2017] [Indexed: 11/28/2022] Open
Abstract
The conversion of vast low-value saturated hydrocarbons into valuable chemicals is of great interest.
The conversion of vast low-value saturated hydrocarbons into valuable chemicals is of great interest. Thanks to the progression of organometallic and coordination chemistry, transition metal catalysed C sp3–H bond functionalisation has now become a powerful tool for alkane transformations. Specifically, methods for alkane functionalisation include radical initiated C–H functionalisation, carbene/nitrene insertion, and transition metal catalysed C–H bond activation. This perspective provides a systematic and concise overview of each protocol, highlighting the factors that govern regioselectivity in these reactions. The challenges of the existing catalytic tactics and future directions for catalyst development in this field will be presented.
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Affiliation(s)
- Xinxin Tang
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China .
| | - Xiangqing Jia
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China .
| | - Zheng Huang
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , University of Chinese Academy of Sciences , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China .
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47
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Hoschek A, Bühler B, Schmid A. Umgehung des Gas-flüssig-Stofftransports von Sauerstoff durch Kopplung der photosynthetischen Wasseroxidation an eine biokatalytische Oxyfunktionalisierung. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706886] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Anna Hoschek
- Department Solare Materialien; Helmholtz-Zentrum für Umweltforschung - UFZ; Permoserstraße 15 04318 Leipzig Deutschland
| | - Bruno Bühler
- Department Solare Materialien; Helmholtz-Zentrum für Umweltforschung - UFZ; Permoserstraße 15 04318 Leipzig Deutschland
| | - Andreas Schmid
- Department Solare Materialien; Helmholtz-Zentrum für Umweltforschung - UFZ; Permoserstraße 15 04318 Leipzig Deutschland
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48
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Hoschek A, Bühler B, Schmid A. Overcoming the Gas-Liquid Mass Transfer of Oxygen by Coupling Photosynthetic Water Oxidation with Biocatalytic Oxyfunctionalization. Angew Chem Int Ed Engl 2017; 56:15146-15149. [PMID: 28945948 PMCID: PMC5708270 DOI: 10.1002/anie.201706886] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 08/24/2017] [Indexed: 01/15/2023]
Abstract
Gas–liquid mass transfer of gaseous reactants is a major limitation for high space–time yields, especially for O2‐dependent (bio)catalytic reactions in aqueous solutions. Herein, oxygenic photosynthesis was used for homogeneous O2 supply via in situ generation in the liquid phase to overcome this limitation. The phototrophic cyanobacterium Synechocystis sp. PCC6803 was engineered to synthesize the alkane monooxygenase AlkBGT from Pseudomonas putida GPo1. With light, but without external addition of O2, the chemo‐ and regioselective hydroxylation of nonanoic acid methyl ester to ω‐hydroxynonanoic acid methyl ester was driven by O2 generated through photosynthetic water oxidation. Photosynthesis also delivered the necessary reduction equivalents to regenerate the Fe2+ center in AlkB for oxygen transfer to the terminal methyl group. The in situ coupling of oxygenic photosynthesis to O2‐transferring enzymes now enables the design of fast hydrocarbon oxyfunctionalization reactions.
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Affiliation(s)
- Anna Hoschek
- Department Solar Materials, Helmholtz-Centre for Environmental Research, UFZ, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Bruno Bühler
- Department Solar Materials, Helmholtz-Centre for Environmental Research, UFZ, Permoserstrasse 15, 04318, Leipzig, Germany
| | - Andreas Schmid
- Department Solar Materials, Helmholtz-Centre for Environmental Research, UFZ, Permoserstrasse 15, 04318, Leipzig, Germany
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49
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White BE, Fenner CJ, Smit MS, Harrison STL. Effect of cell permeability and dehydrogenase expression on octane activation by CYP153A6-based whole cell Escherichia coli catalysts. Microb Cell Fact 2017; 16:156. [PMID: 28931395 PMCID: PMC5607502 DOI: 10.1186/s12934-017-0763-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Accepted: 09/07/2017] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND The regeneration of cofactors and the supply of alkane substrate are key considerations for the biocatalytic activation of hydrocarbons by cytochrome P450s. This study focused on the biotransformation of n-octane to 1-octanol using resting Escherichia coli cells expressing the CYP153A6 operon, which includes the electron transport proteins ferredoxin and ferredoxin reductase. Glycerol dehydrogenase was co-expressed with the CYP153A6 operon to investigate the effects of boosting cofactor regeneration. In order to overcome the alkane supply bottleneck, various chemical and physical approaches to membrane permeabilisation were tested in strains with or without additional dehydrogenase expression. RESULTS Dehydrogenase co-expression in whole cells did not improve product formation and reduced the stability of the system at high cell densities. Chemical permeabilisation resulted in initial hydroxylation rates that were up to two times higher than the whole cell system, but severely impacted biocatalyst stability. Mechanical cell breakage led to improved enzyme stability, but additional dehydrogenase expression was necessary to improve product formation. The best-performing system (in terms of final titres) consisted of mechanically ruptured cells expressing additional dehydrogenase. This system had an initial activity of 1.67 ± 0.12 U/gDCW (32% improvement on whole cells) and attained a product concentration of 34.8 ± 1.6 mM after 24 h (22% improvement on whole cells). Furthermore, the system was able to maintain activity when biotransformation was extended to 72 h, resulting in a final product titre of 60.9 ± 1.1 mM. CONCLUSIONS This study suggests that CYP153A6 in whole cells is limited by coupling efficiencies rather than cofactor supply. However, the most significant limitation in the current system is hydrocarbon transport, with substrate import being the main determinant of hydroxylation rates, and product export playing a key role in system stability.
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Affiliation(s)
- Bronwyn E White
- Centre for Bioprocess Engineering Research (CeBER), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, Cape Town, 7701, South Africa.,South African DST-NRF Centre of Excellence in Catalysis, c*change, University of Cape Town, Private Bag, Rondebosch, Cape Town, 7701, South Africa
| | - Caryn J Fenner
- Centre for Bioprocess Engineering Research (CeBER), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, Cape Town, 7701, South Africa.,South African DST-NRF Centre of Excellence in Catalysis, c*change, University of Cape Town, Private Bag, Rondebosch, Cape Town, 7701, South Africa
| | - Martha S Smit
- Department of Microbial, Biochemical and Food Biotechnology, University of the Free State, Bloemfontein, South Africa.,South African DST-NRF Centre of Excellence in Catalysis, c*change, University of Cape Town, Private Bag, Rondebosch, Cape Town, 7701, South Africa
| | - Susan T L Harrison
- Centre for Bioprocess Engineering Research (CeBER), Department of Chemical Engineering, University of Cape Town, Private Bag X3, Rondebosch, Cape Town, 7701, South Africa. .,South African DST-NRF Centre of Excellence in Catalysis, c*change, University of Cape Town, Private Bag, Rondebosch, Cape Town, 7701, South Africa.
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Sackville EV, Kociok-Köhn G, Hintermair U. Ligand Tuning in Pyridine-Alkoxide Ligated Cp*IrIII Oxidation Catalysts. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00492] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Emma V. Sackville
- Centre
for Sustainable Chemical Technologies, University of Bath, Claverton Down, Bath BA2
7AY, United Kingdom
| | - Gabriele Kociok-Köhn
- Chemical
Characterisation and Analysis Facility, University of Bath, Claverton Down, Bath BA2
7AY, United Kingdom
| | - Ulrich Hintermair
- Centre
for Sustainable Chemical Technologies, University of Bath, Claverton Down, Bath BA2
7AY, United Kingdom
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