1
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Xiao Y, Chen L, Teng K, Ma J, Xiang S, Jiang L, Liu G, Yang B, Fang J. Potential roles of the rhizospheric bacterial community in assisting Miscanthus floridulus in remediating multi-metal(loid)s contaminated soils. ENVIRONMENTAL RESEARCH 2023; 227:115749. [PMID: 36965787 DOI: 10.1016/j.envres.2023.115749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 02/23/2023] [Accepted: 03/22/2023] [Indexed: 05/08/2023]
Abstract
Phytoremediation technology is an important approach applied to heavy metal remediation, and how to improve its remediation efficiency is the key. In this study, we compared the rhizospheric bacterial communities and metals contents in Miscanthus floridulus (M. floridulus) of four towns, including Huayuan Town (HY), Longtan Town (LT), Maoer Village (ME), and Minle Town (ML) around the lead-zinc mining area in Huayuan County, China. The roles of rhizospheric bacterial communities in assisting the phytoremediation of M. floridulus were explored. It was found that the compositions of the rhizospheric bacterial community of M. floridulus differed in four regions, but majority of them were heavy metal-resistant bacteria that could promote plant growth. Results of bioconcentration factors showed the enrichment of Cu, Zn, and Pb by M. floridulus in these four regions were significantly different. The Zn enrichment capacity of ML was the strongest for Cu and stronger than LT and ME for Pb. The enrichment capacity of LT and ML was stronger than HY and ME. These bacteria may influence the different heavy metals uptake of M. floridulus by altering the soil physiochemical properties (e.g., soil peroxidase, pH and moisture content). In addition, co-occurrence network analysis also showed that LT and ML had higher network stability and complexity than HY and ME. Functional prediction analysis of the rhizospheric bacterial community showed that genes related to protein synthesis (e.g., zinc-binding alcohol dehydrogenase/oxidoreductase, Dtx R family transcriptional regulators and ACC deaminase) also contributed to phytoremediation in various ways. This study provides theoretical guidance for selecting suitable microorganisms to assist in the phytoremediation of heavy metals.
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Affiliation(s)
- Yunhua Xiao
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Liang Chen
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Kai Teng
- Hunan Tobacco Science Institute, Changsha, 410004, China
| | - Jingjing Ma
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Sha Xiang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Lihong Jiang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Gang Liu
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China
| | - Bo Yang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China.
| | - Jun Fang
- College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, China.
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2
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Wang R, Liu C, Lyu C, Sun J, Kang C, Ma Y, Wan X, Guo J, Shi L, Wang J, Huang L, Wang S, Guo L. The discovery and characterization of AeHGO in the branching route from shikonin biosynthesis to shikonofuran in Arnebia euchroma. FRONTIERS IN PLANT SCIENCE 2023; 14:1160571. [PMID: 37180378 PMCID: PMC10167036 DOI: 10.3389/fpls.2023.1160571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 04/07/2023] [Indexed: 05/16/2023]
Abstract
Shikonin derivatives are natural naphthoquinone compounds and the main bioactive components produced by several boraginaceous plants, such as Lithospermum erythrorhizon and Arnebia euchroma. Phytochemical studies utilizing both L. erythrorhizon and A. euchroma cultured cells indicate the existence of a competing route branching out from the shikonin biosynthetic pathway to shikonofuran. A previous study has shown that the branch point is the transformation from (Z)-3''-hydroxy-geranylhydroquinone to an aldehyde intermediate (E)-3''-oxo-geranylhydroquinone. However, the gene encoding the oxidoreductase that catalyzes the branch reaction remains unidentified. In this study, we discovered a candidate gene belonging to the cinnamyl alcohol dehydrogenase family, AeHGO, through coexpression analysis of transcriptome data sets of shikonin-proficient and shikonin-deficient cell lines of A. euchroma. In biochemical assays, purified AeHGO protein reversibly oxidized (Z)-3''-hydroxy-geranylhydroquinone to produce (E)-3''-oxo-geranylhydroquinone followed by reversibly reducing (E)-3''-oxo-geranylhydroquinone to (E)-3''-hydroxy-geranylhydroquinone, resulting in an equilibrium mixture of the three compounds. Time course analysis and kinetic parameters showed that the reduction of (E)-3''-oxo-geranylhydroquinone was stereoselective and efficient in presence of NADPH, which determined that the overall reaction proceeded from (Z)-3''-hydroxy-geranylhydroquinone to (E)-3''-hydroxy-geranylhydroquinone. Considering that there is a competition between the accumulation of shikonin and shikonofuran derivatives in cultured plant cells, AeHGO is supposed to play an important role in the metabolic regulation of the shikonin biosynthetic pathway. Characterization of AeHGO should help expedite the development of metabolic engineering and synthetic biology toward production of shikonin derivatives.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Luqi Huang
- *Correspondence: Luqi Huang, ; Sheng Wang, ; Lanping Guo,
| | - Sheng Wang
- *Correspondence: Luqi Huang, ; Sheng Wang, ; Lanping Guo,
| | - Lanping Guo
- State Key Laboratory Breeding Base of Dao-di Herbs, National Resource Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing, China
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3
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de Castro AA, Franco JH, de Andrade AR, Ramalho TC. Rationalizing the activity of a hybrid biocatalyst for ethanol oxidation. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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4
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Peng M, Wang Z, Sun X, Guo X, Wang H, Li R, Liu Q, Chen M, Chen X. Deep Learning-Based Label-Free Surface-Enhanced Raman Scattering Screening and Recognition of Small-Molecule Binding Sites in Proteins. Anal Chem 2022; 94:11483-11491. [PMID: 35968807 DOI: 10.1021/acs.analchem.2c01158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Identification of small-molecule binding sites in proteins is of great significance in analysis of protein function and drug design. Modified sites can be recognized via proteolytic cleavage followed by liquid chromatography-mass spectrometry (LC-MS); however, this has always been impeded by the complexity of peptide mixtures and the elaborate synthetic design for tags. Here, we demonstrate a novel technique for identifying protein binding sites using a deep learning-based label-free surface-enhanced Raman scattering (SERS) screening (DLSS) strategy. In DLSS, the deep learning model that was trained with large SERS signals could detect signal features of small molecules with high accuracy (>99%). Without any secondary tag, the small molecules are directly complexed with proteins. After proteolysis and LC, SERS signals of all LC fractions are collected and input into the model, whereby the fractions containing the small-molecule-modified peptides can be recognized by the model and sent to MS/MS to identify the binding site(s). By using an automated DLSS system, we successfully identified the modification sites of fomepizole in alcohol dehydrogenase, which is coordinated with zinc along with three peptides. We also showed that the DLSS strategy works for identification of amino-acid residues that covalently bond with ibrutinib in Bruton tyrosine kinase. These results suggest that the DLSS strategy, which provides high molecular recognition capability to LC-MS analysis, has potential in drug discovery, proteomics, and metabolomics.
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Affiliation(s)
- Mei Peng
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Zi Wang
- School of Life Sciences, Central South University, Changsha 410013, China
| | - Xiaotong Sun
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Xiangwei Guo
- School of Life Sciences, Central South University, Changsha 410013, China
| | - Haoyang Wang
- School of Life Sciences, Central South University, Changsha 410013, China
| | - Ruili Li
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Qi Liu
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
| | - Miao Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China.,School of Life Sciences, Central South University, Changsha 410013, China
| | - Xiaoqing Chen
- College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
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5
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A host-guest semibiological photosynthesis system coupling artificial and natural enzymes for solar alcohol splitting. Nat Commun 2021; 12:5092. [PMID: 34429430 PMCID: PMC8384870 DOI: 10.1038/s41467-021-25362-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 07/28/2021] [Indexed: 01/07/2023] Open
Abstract
Development of a versatile, sustainable and efficient photosynthesis system that integrates intricate catalytic networks and energy modules at the same location is of considerable future value to energy transformation. In the present study, we develop a coenzyme-mediated supramolecular host-guest semibiological system that combines artificial and enzymatic catalysis for photocatalytic hydrogen evolution from alcohol dehydrogenation. This approach involves modification of the microenvironment of a dithiolene-embedded metal-organic cage to trap an organic dye and NADH molecule simultaneously, serving as a hydrogenase analogue to induce effective proton reduction inside the artificial host. This abiotic photocatalytic system is further embedded into the pocket of the alcohol dehydrogenase to couple enzymatic alcohol dehydrogenation. This host-guest approach allows in situ regeneration of NAD+/NADH couple to transfer protons and electrons between the two catalytic cycles, thereby paving a unique avenue for a synergic combination of abiotic and biotic synthetic sequences for photocatalytic fuel and chemical transformation. Abiotic–biotic hybrid systems are promising to trap light for fuel and chemical transformation with high efficacy and selectivity. This study reports a coenzyme-mediated supramolecular host-guest semibiological system combining supramolecular catalyst and enzymes for solar alcohol splitting.
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6
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Martínez‐Prieto LM, Río D, Álvarez E, Palma P, Cámpora J. Nucleophilic Nickel and Palladium Pincer Hydroxides: A Study of Their Reactions with Dimethyl Carbonate and Other Non‐Alkylating Organic Electrophiles. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Luis M. Martínez‐Prieto
- Instituto de Investigaciones Químicas CSIC-Universidad de Sevilla C/Américo Vespucio, 49. 41092 Seville Spain
- Instituto de Tecnología Química CSIC-Universidad Politécnica de Valencia Avda. de Los Naranjos, s/n. 46022 Valencia Spain
| | - Diego Río
- Instituto de Investigaciones Químicas CSIC-Universidad de Sevilla C/Américo Vespucio, 49. 41092 Seville Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas CSIC-Universidad de Sevilla C/Américo Vespucio, 49. 41092 Seville Spain
| | - Pilar Palma
- Instituto de Investigaciones Químicas CSIC-Universidad de Sevilla C/Américo Vespucio, 49. 41092 Seville Spain
| | - Juan Cámpora
- Instituto de Investigaciones Químicas CSIC-Universidad de Sevilla C/Américo Vespucio, 49. 41092 Seville Spain
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7
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Kim K, Cho D, Noh H, Ohta T, Baik MH, Cho J. Controlled Regulation of the Nitrile Activation of a Peroxocobalt(III) Complex with Redox-Inactive Lewis Acidic Metals. J Am Chem Soc 2021; 143:11382-11392. [PMID: 34313127 DOI: 10.1021/jacs.1c01674] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Redox-inactive metal ions play vital roles in biological O2 activation and oxidation reactions of various substrates. Recently, we showed a distinct reactivity of a peroxocobalt(III) complex bearing a tetradentate macrocyclic ligand, [CoIII(TBDAP)(O2)]+ (1) (TBDAP = N,N'-di-tert-butyl-2,11-diaza[3.3](2,6)pyridinophane), toward nitriles that afforded a series of hydroximatocobalt(III) complexes, [CoIII(TBDAP)(R-C(═NO)O)]+ (R = Me (3), Et, and Ph). In this study, we report the effects of redox-inactive metal ions on nitrile activation of 1. In the presence of redox-inactive metal ions such as Zn2+, La3+, Lu3+, and Y3+, the reaction does not form the hydroximatocobalt(III) complex but instead gives peroxyimidatocobalt(III) complexes, [CoIII(TBDAP)(R-C(═NH)O2)]2+ (R = Me (2) and Ph (2Ph)). These new intermediates were characterized by various physicochemical methods including X-ray diffraction analysis. The rates of the formation of 2 are found to correlate with the Lewis acidity of the additive metal ions. Moreover, complex 2 was readily converted to 3 by the addition of a base. In the presence of Al3+, Sc3+, or H+, 1 is converted to [CoIII(TBDAP)(O2H)(MeCN)]2+ (4), and further reaction with nitriles did not occur. These results reveal that the reactivity of the peroxocobalt(III) complex 1 in nitrile activation can be regulated by the redox-inactive metal ions and their Lewis acidity. DFT calculations show that the redox-inactive metal ions stabilize the peroxo character of end-on Co-η1-O2 intermediate through the charge reorganization from a CoII-superoxo to a CoIII-peroxo intermediate. A complete mechanistic model explaining the role of the Lewis acid is presented.
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Affiliation(s)
- Kyungmin Kim
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.,Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Dasol Cho
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Hyeonju Noh
- Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
| | - Takehiro Ohta
- Picobiology Institute, Graduate School of Life Science, University of Hyogo, RSCLP Center, 679-5148 Hyogo, Japan
| | - Mu-Hyun Baik
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea.,Center for Catalytic Hydrocarbon Functionalizations, Institute for Basic Science (IBS), Daejeon 34141, Republic of Korea
| | - Jaeheung Cho
- Department of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea.,Department of Emerging Materials Science, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu 42988, Republic of Korea
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8
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Pladzyk A, Kowalkowska-Zedler D, Ciborska A, Schnepf A, Dołęga A. Complexes of silanethiolate ligands: Synthesis, structure, properties and application. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213761] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Li Y, Zhang R, Xu Y. Structure-based mechanisms: On the way to apply alcohol dehydrogenases/reductases to organic-aqueous systems. Int J Biol Macromol 2020; 168:412-427. [PMID: 33316337 DOI: 10.1016/j.ijbiomac.2020.12.068] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 12/08/2020] [Accepted: 12/08/2020] [Indexed: 12/20/2022]
Abstract
Alcohol dehydrogenases/reductases catalyze enantioselective syntheses of versatile chiral compounds relying on direct hydride transfer from cofactor to substrates, or to an intermediate and then to substrates. Since most of the substrates catalyzed by alcohol dehydrogenases/reductases are insoluble in aqueous solutions, increasing interest has been turning to organic-aqueous systems. However, alcohol dehydrogenases/reductases are normally instable in organic solvents, leading to the unsatisfied enantioselective synthesis efficiency. The behaviors of these enzymes in organic solvents at an atomic level are unclear, thus it is of great importance to understand its structure-based mechanisms in organic-aqueous systems to improve their relative stability. Here, we summarized the accessible structures of alcohol dehydrogenases/reductases in Protein Data Bank crystallized in organic-aqueous systems, and compared the structures of alcohol dehydrogenases/reductases which have different tolerance towards organic solvents. By understanding the catalytic behaviors and mechanisms of these enzymes in organic-aqueous systems, the efficient enantioselective syntheses mediated by alcohol dehydrogenases/reductases and further challenges are also discussed through solvent engineering and enzyme-immobilization in the last decade.
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Affiliation(s)
- Yaohui Li
- Key Laboratory of Industrial Biotechnology of Ministry of Education & School of Biotechnology, Jiangnan University, Wuxi 214122, PR China; Department of Biological Science, Columbia University, New York, NY 10025, United States
| | - Rongzhen Zhang
- Key Laboratory of Industrial Biotechnology of Ministry of Education & School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.
| | - Yan Xu
- Key Laboratory of Industrial Biotechnology of Ministry of Education & School of Biotechnology, Jiangnan University, Wuxi 214122, PR China.
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10
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Sherbow TJ, Parsons LWT, Phan NA, Fettinger JC, Berben LA. Ligand Conjugation Directs the Formation of a 1,3-Dihydropyridinate Regioisomer. Inorg Chem 2020; 59:17614-17619. [PMID: 33215919 DOI: 10.1021/acs.inorgchem.0c02847] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The selective formation of the 1,4-dihydropyridine isomer of NAD(P)H is mirrored by the selective formation of 1,4-dihydropyridinate ligand-metal complexes in synthetic systems. Here we demonstrate that ligand conjugation can be used to promote selective 1,3-dihydropyridinate formation. This represents an advance toward controlling and tuning the selectivity in dihydropyridinate formation chemistry. The reaction of (I2P2-)Al(THF)Cl [1; I2P = bis(imino)pyridine; THF = tetrahydrofuran] with the one-electron oxidant (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO) afforded (I2P-)Al(TEMPO)Cl (2), which can be reduced with sodium to the twice-reduced ligand complex (I2P2-)Al(TEMPO) (3). Compounds 2 and 3 serve as precursors for high-yielding and selective routes to an aluminum-supported 1,3-dihydropyridinate complex via the reaction of 2 with 3 equiv of potassium metal or the reaction of 3 with KH.
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Affiliation(s)
- Tobias J Sherbow
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Leo W T Parsons
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Nathan A Phan
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - James C Fettinger
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
| | - Louise A Berben
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, United States
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11
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Immobilization of alcohol dehydrogenase from Saccharomyces cerevisiae onto carboxymethyl dextran-coated magnetic nanoparticles: a novel route for biocatalyst improvement via epoxy activation. Sci Rep 2020; 10:19478. [PMID: 33173138 PMCID: PMC7656461 DOI: 10.1038/s41598-020-76463-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 10/14/2020] [Indexed: 01/01/2023] Open
Abstract
A novel method is described for the immobilization of alcohol dehydrogenase (ADH) from Saccharomyces cerevisiae onto carboxymethyl dextran (CMD) coated magnetic nanoparticles (CMD-MNPs) activated with epoxy groups, using epichlorohydrin (EClH). EClH was used as an activating agent to bind ADH molecules on the surface of CMD-MNPs. Optimal immobilization conditions (activating agent concentration, temperature, rotation speed, medium pH, immobilization time and enzyme concentration) were set to obtain the highest expressed activity of the immobilized enzyme. ADH that was immobilized onto epoxy-activated CMD-MNPs (ADH-CMD-MNPs) maintained 90% of the expressed activity. Thermal stability of ADH-CMD-MNPS after 24 h at 20 °C and 40 °C yielded 79% and 80% of initial activity, respectively, while soluble enzyme activity was only 19% at 20 °C and the enzyme was non-active at 40 °C. Expressed activity of ADH-CMD-MNPs after 21 days of storage at 4 °C was 75%. Kinetic parameters (KM, vmax) of soluble and immobilized ADH were determined, resulting in 125 mM and 1.2 µmol/min for soluble ADH, and in 73 mM and 4.7 µmol/min for immobilized ADH.
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12
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Dehghani-Firouzabadi AA, Morovati F, Notash B. Metal complexes with thioether containing unsymmetrical N 2S donor Schiff base ligand: Crystal and molecular structure of nickel(II) complex. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2019.1709458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
| | - Farzaneh Morovati
- Department of Chemistry, Faculty of Science, Yazd University, Yazd, Iran
| | - Behrouz Notash
- Chemistry Department, Shahid Beheshti University, G. C., Evin, Tehran, Iran
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13
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Zhao L, Cai J, Li Y, Wei J, Duan C. A host-guest approach to combining enzymatic and artificial catalysis for catalyzing biomimetic monooxygenation. Nat Commun 2020; 11:2903. [PMID: 32518257 PMCID: PMC7283336 DOI: 10.1038/s41467-020-16714-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 05/12/2020] [Indexed: 12/19/2022] Open
Abstract
Direct transfer of protons and electrons between two tandem reactions is still a great challenge, because overall reaction kinetics is seriously affected by diffusion rate of the proton and electron carriers. We herein report a host–guest supramolecular strategy based on the incorporation of NADH mimics onto the surface of a metal-organic capsule to encapsulate flavin analogues for catalytic biomimetic monooxygenations in conjunction with enzymes. Coupling an artificial catalysis and a natural enzymatic catalysis in the pocket of an enzyme, this host–guest catalyst–enzyme system allows direct proton and electron transport between two catalytic processes via NADH mimics for the monooxygenation of both cyclobutanones and thioethers. This host–guest approach, which involves the direct coupling of abiotic and biotic catalysts via a NADH-containing host, is quite promising compared to normal catalyst–enzyme systems, as it offers the key advantages of supramolecular catalysis in integrated chemical and biological synthetic sequences. Combining artificial and natural enzymes is a strategy to mimic biocatalytic processes with high efficiency and selectivity. This study reports a dual catalytic system composed of flavin adenine dinucleotide model and NADH mimics to catalyze the monooxygenation of cyclobutanones and thioethers.
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Affiliation(s)
- Liang Zhao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116024, Dalian, People's Republic of China
| | - Junkai Cai
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116024, Dalian, People's Republic of China
| | - Yanan Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116024, Dalian, People's Republic of China
| | - Jianwei Wei
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116024, Dalian, People's Republic of China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, 116024, Dalian, People's Republic of China. .,Zhang Dayu School of Chemistry, Dalian University of Technology, 116024, Dalian, People's Republic of China.
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14
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15
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Vasić K, Knez Ž, Konstantinova EA, Kokorin AI, Gyergyek S, Leitgeb M. Structural and magnetic characteristics of carboxymethyl dextran coated magnetic nanoparticles: From characterization to immobilization application. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104481] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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16
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Mielcarek A, Bieńko A, Saramak P, Jezierska J, Dołęga A. A Cu/Zn heterometallic complex with solvent-binding cavity, catalytic activity for the oxidation of 1-phenylethanol and unusual magnetic properties. Dalton Trans 2019; 48:17780-17791. [PMID: 31746872 DOI: 10.1039/c9dt03304a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Mononuclear and polymeric complexes of zinc(ii) and copper(ii) have been synthesized using two isomers of the hemi-salen ligand with a different mutual orientation of donor atoms. The heterometallic Cu/Zn metallocycle features a catalytic niche filled with the molecule of water and molecules of methanol. This unusual compound exhibits both pronounced catalytic activity in the reaction of oxidation of a secondary alcohol to ketone and field induced slow magnetic relaxation, which is a very rare phenomenon among Cu(ii) complexes.
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Affiliation(s)
- Agnieszka Mielcarek
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicz, 80-233 Gdańsk, Poland.
| | - Alina Bieńko
- Faculty of Chemistry, University of Wroclaw, 14 F. Joliot-Curie, 50-383 Wroclaw, Poland.
| | - Paulina Saramak
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicz, 80-233 Gdańsk, Poland.
| | - Julia Jezierska
- Faculty of Chemistry, University of Wroclaw, 14 F. Joliot-Curie, 50-383 Wroclaw, Poland.
| | - Anna Dołęga
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicz, 80-233 Gdańsk, Poland.
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17
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Understanding (R) Specific Carbonyl Reductase from Candida parapsilosis ATCC 7330 [CpCR]: Substrate Scope, Kinetic Studies and the Role of Zinc. Catalysts 2019. [DOI: 10.3390/catal9090702] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
CpCR, an (R) specific carbonyl reductase, so named because it gave (R)-alcohols on asymmetric reduction of ketones and ketoesters, is a recombinantly expressed enzyme from Candida parapsilosis ATCC 7330. It turns out to be a better aldehyde reductase and catalyses cofactor (NADPH) specific reduction of aliphatic and aromatic aldehydes. Kinetics studies against benzaldehyde and 2,4-dichlorobenzaldehyde show that the enzyme affinity and rate of reaction change significantly upon substitution on the benzene ring of benzaldehyde. CpCR, an MDR (medium chain reductase/dehydrogenase) containing both structural and catalytic Zn atoms, exists as a dimer, unlike the (S) specific reductase (SRED) from the same yeast which can exist in both dimeric and tetrameric forms. Divalent metal salts inhibit the enzyme even at nanomolar concentrations. EDTA chelation decreases CpCR activity. However, chelation done after the enzyme is pre-incubated with the NADPH retains most of the activity implying that Zn removal is largely prevented by the formation of the enzyme-cofactor complex.
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18
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Cd(II) and Ni(II) complexes from a tridentate NNO Schiff base: Crystal structures, spectral aspects and Hirshfeld surface analysis. Polyhedron 2019. [DOI: 10.1016/j.poly.2018.11.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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19
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Monda F, Madsen R. Zinc Oxide-Catalyzed Dehydrogenation of Primary Alcohols into Carboxylic Acids. Chemistry 2018; 24:17832-17837. [PMID: 30273451 DOI: 10.1002/chem.201804402] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Indexed: 01/21/2023]
Abstract
Zinc oxide has been developed as a catalyst for the dehydrogenation of primary alcohols into carboxylic acids and hydrogen gas. The reaction is performed in mesitylene solution in the presence of potassium hydroxide, followed by workup with hydrochloric acid. The transformation can be applied to both benzylic and aliphatic primary alcohols and the catalytically active species was shown to be a homogeneous compound by a hot filtration test. Dialkylzinc and strongly basic zinc salts also catalyze the dehydrogenation with similar results. The mechanism is believed to involve the formation of a zinc alkoxide which degrades into the aldehyde and a zinc hydride. The latter reacts with the alcohol to form hydrogen gas and regenerate the zinc alkoxide. The degradation of a zinc alkoxide into the aldehyde upon heating was confirmed experimentally. The aldehyde can then undergo a Cannizzaro reaction or a Tishchenko reaction, which in the presence of hydroxide leads to the carboxylic acid.
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Affiliation(s)
- Fabrizio Monda
- Department of Chemistry, Technical University of Denmark, 2800, Kgs. Lyngby, Denmark
| | - Robert Madsen
- Department of Chemistry, Technical University of Denmark, 2800, Kgs. Lyngby, Denmark
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20
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Sandoval JJ, Álvarez E, Palma P, Rodríguez-Delgado A, Cámpora J. Neutral Bis(imino)-1,4-dihydropyridinate and Cationic Bis(imino)pyridine σ-Alkylzinc(II) Complexes as Hydride Exchange Systems: Classic Organometallic Chemistry Meets Ligand-Centered, Biomimetic Reactivity. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00183] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- John J. Sandoval
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Eleuterio Álvarez
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Pilar Palma
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Antonio Rodríguez-Delgado
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
| | - Juan Cámpora
- Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/Américo Vespucio, 49, 41092 Sevilla, Spain
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21
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Gönül İ, Burak AY, Karaca S, Şahin O, Serin S. Novel copper(II) complexes of two tridentate ONN type ligands: Synthesis, characterization, electrical conductivity and luminescence properties. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.02.026] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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22
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Alturiqi AS, Alaghaz ANM, Zayed ME, Ammar RA. Synthesis, characterization, biological activity, and corrosion inhibition in acid medium of unsymmetrical tetradentate N 2
O 2
Schiff base complexes. J CHIN CHEM SOC-TAIP 2018. [DOI: 10.1002/jccs.201800027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Amani S. Alturiqi
- Department of Chemistry, College of Science; Princess Nourah bint Abdul Rahman University; Riyadh Saudi Arabia
| | - Abdel-Nasser M.A. Alaghaz
- Department of Chemistry, Faculty of Science; Jazan University; Jazan Saudi Arabia
- Department of Chemistry, Faculty of Science (Boys); Al-Azhar University; Cairo Egypt
| | - Mohamed E. Zayed
- Department of Botany and Microbiology, Faculty of Science; King Saud University; Riyadh Saudi Arabia
| | - Reda A. Ammar
- Department of Chemistry, College of Science; Al-Imam Mohammad Ibn Saud Islamic University (IMSIU); Riyadh Saudi Arabia
- Department of Chemistry, Faculty of Science (Girls); Al-Azhar University; Cairo Egypt
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23
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Synthesis, characterization, electrical conductivity and luminescence properties of two copper(II) complexes with tridentate N 2 O chelating ligands containing imine bond. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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24
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Ciborska A, Hnatejko Z, Kazimierczuk K, Mielcarek A, Wiśniewska A, Dołęga A. Silver complexes stabilized by large silanethiolate ligands - crystal structures and luminescence properties. Dalton Trans 2017; 46:11097-11107. [PMID: 28795747 DOI: 10.1039/c7dt00740j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Bulky silanethiolate and disiladithiolate ligands were applied to synthesize one mononuclear and three trinuclear silver complexes including two cyclic "microclusters" and a linear tri-nuclear silanethiolate complex. All obtained compounds are characterized by X-ray diffraction and FT-IR. NMR and emission spectroscopies were used where possible. The first trinuclear anionic silver thiolate is structurally characterized. The influence of the different charge of cyclic silver complexes as well as the overall ligand environment on the structural properties is demonstrated. The impact of the different synthetic routes on the final structures of the obtained clusters - cyclic or linear - is discussed.
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Affiliation(s)
- Anna Ciborska
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza St. 11/12, 80-233 Gdańsk, Poland.
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25
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Dehghani-Firouzabadi AA, Sepehri S, Notash B. Synthesis and Characterization of Metal Complexes of a New Unsymmetrical Tridentate NNS Schiff Base Ligand: X-ray Crystal Structure Determination of Nickel(II) Complex. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700068] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Samaneh Sepehri
- Department of Chemistry, Faculty of Science; Yazd University; 89195-741 Yazd Iran
| | - Behrouz Notash
- Chemistry Department; Shahid Beheshti University, G. C. Evin; Tehran 1983963113 Iran
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26
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Adach A. Review: an overview of recent developments in coordination chemistry of polypyrazolylmethylamines. Complexes with N-scorpionate ligands createdin situfrom pyrazole derivatives and zerovalent metals. J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1278572] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Anna Adach
- Institute of Chemistry, Jan Kochanowski University of Kielce, Kielce, Poland
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27
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Dahl EW, Louis-Goff T, Szymczak NK. Second sphere ligand modifications enable a recyclable catalyst for oxidant-free alcohol oxidation to carboxylates. Chem Commun (Camb) 2017; 53:2287-2289. [DOI: 10.1039/c6cc10206a] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ruthenium–terpyridine complexes appended with secondary amines impart hydride stability and recyclability toward catalytic dehydrogenative alcohol oxidation to carboxylates.
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Affiliation(s)
- Eric W. Dahl
- Department of Chemistry
- University of Michigan
- Ann Arbor
- USA
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28
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Qiu B, Yang X. A bio-inspired design and computational prediction of scorpion-like SCS nickel pincer complexes for lactate racemization. Chem Commun (Camb) 2017; 53:11410-11413. [DOI: 10.1039/c7cc06416k] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computationally predicted scorpion-like SCS nickel pincer complexes are promising for the catalysis of lactate racemization under mild conditions.
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Affiliation(s)
- Bing Qiu
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
| | - Xinzheng Yang
- Beijing National Laboratory for Molecular Sciences
- State Key Laboratory for Structural Chemistry of Unstable and Stable Species
- CAS Research/Education Center for Excellence in Molecular Sciences
- Institute of Chemistry
- Chinese Academy of Sciences
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29
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Dehghani-Firouzabadi AA, Sobhani M, Notash B. Synthesis and characterization of metal complexes with NOS unsymmetrical tridentate Schiff base ligand. X-ray crystal structures determination of nickel(II) and copper(II) complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.08.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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30
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Sun Y, Ma H, Jia X, Ma J, Luo Y, Gao J, Xu J. A High-Performance Base-Metal Approach for the Oxidative Esterification of 5-Hydroxymethylfurfural. ChemCatChem 2016. [DOI: 10.1002/cctc.201600484] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yuxia Sun
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy; Dalian 116023 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Hong Ma
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy; Dalian 116023 P.R. China
| | - Xiuquan Jia
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy; Dalian 116023 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Jiping Ma
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy; Dalian 116023 P.R. China
| | - Yang Luo
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy; Dalian 116023 P.R. China
- University of Chinese Academy of Sciences; Beijing 100049 P.R. China
| | - Jin Gao
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy; Dalian 116023 P.R. China
| | - Jie Xu
- State Key Laboratory of Catalysis; Dalian Institute of Chemical Physics; Chinese Academy of Sciences, Dalian National Laboratory for Clean Energy; Dalian 116023 P.R. China
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31
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Tüchler M, Holler S, Rendl S, Stock N, Belaj F, Mösch‐Zanetti NC. Zinc Scorpionate Complexes with a Hybrid (Thiopyridazinyl)(thiomethimidazolyl)borate Ligand. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501366] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Michael Tüchler
- Institute of Chemistry Inorganic Chemistry University of Graz Schubertstrasse 1 8010 Graz Austria
| | - Stefan Holler
- Institute of Chemistry Inorganic Chemistry University of Graz Schubertstrasse 1 8010 Graz Austria
| | - Sarah Rendl
- Institute of Chemistry Inorganic Chemistry University of Graz Schubertstrasse 1 8010 Graz Austria
| | - Natascha Stock
- Institute of Chemistry Inorganic Chemistry University of Graz Schubertstrasse 1 8010 Graz Austria
| | - Ferdinand Belaj
- Institute of Chemistry Inorganic Chemistry University of Graz Schubertstrasse 1 8010 Graz Austria
| | - Nadia C. Mösch‐Zanetti
- Institute of Chemistry Inorganic Chemistry University of Graz Schubertstrasse 1 8010 Graz Austria
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32
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Pladzyk A, Ozarowski A, Ponikiewski Ł. Crystal and electronic structures of Ni(II) silanethiolates containing flexible diamine ligands. Inorganica Chim Acta 2016. [DOI: 10.1016/j.ica.2015.10.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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33
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Koga K, Matsubara Y, Kosaka T, Koike K, Morimoto T, Ishitani O. Hydride Reduction of NAD(P)+ Model Compounds with a Ru(II)–Hydrido Complex. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00713] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kichitaro Koga
- Department of Chemistry,
Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-NE-1, Meguro-ku, Tokyo 152-8550, Japan
| | - Yasuo Matsubara
- Department
of Material and Life Chemistry, Kanagawa University, Rokkakubashi
3-27-1, Kanagawa-ku, Yokohama 221-8686, Japan
| | - Tatsumi Kosaka
- Graduate School of
Science and Engineering, Saitama University, 255 Shimo-Okubo, Saitama 338-8570, Japan
| | - Kazuhide Koike
- National Institute of Advanced Industrial Science and Technology, Onogawa 16-1, Tsukuba 305-8569, Japan
| | - Tatsuki Morimoto
- Department of Applied Chemistry, School of Engineering, Tokyo University of Technology, 1401-1 Katakura, Hachioji, Tokyo 192-0982, Japan
| | - Osamu Ishitani
- Department of Chemistry,
Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-NE-1, Meguro-ku, Tokyo 152-8550, Japan
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34
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Adach A, Daszkiewicz M, Barszcz B. Experimental and theoretical studies on the structure and spectroscopic properties of N-scorpionate complexes obtained from metallic cobalt in a one pot synthesis. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.03.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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35
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Ciborska A, Conterosito E, Milanesio M, Kazimierczuk K, Rzymowska K, Brzozowski K, Dołęga A. The Syntheses and Crystal Structures of the First Disiloxane-1,3-dithiol and Its Cadmium Complex. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500457] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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36
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Dołęga A, Jabłońska A, Pladzyk A, Ponikiewski Ł, Ferenc W, Sarzyński J, Herman A. Synthesis and characterization of mononuclear Zn(II), Co(II) and Ni(II) complexes containing a sterically demanding silanethiolate ligand derived from tris(2,6-diisopropylphenoxy)silanethiol. Dalton Trans 2014; 43:12766-75. [PMID: 25014574 DOI: 10.1039/c4dt01079e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Four heteroleptic complexes of nickel(ii), cobalt(ii) and zinc(ii), containing a monodentate silanethiolate ligand derived from tris(2,6-diisopropylphenoxy)silanethiol (TDST), were prepared and characterized. Nickel(ii) and cobalt(ii) complexes of the formula M(NH3)2(TDST)2 (M = Ni(ii) complex , M = Co(ii) complex ) were obtained from the respective chlorides. Zinc complexes of the general formula Zn(acac)(TDST)(L), where L = EtOH (complex ) or H2O (complex ), were obtained from zinc acetylacetonate. A single-crystal X-ray structural analysis revealed that all crystalline products are solvent adducts. The geometries of ligands in the complexes are typical: distorted tetrahedral in zinc and cobalt(ii) complexes and square planar in nickel(ii) compounds. Magnetic studies performed for Ni(ii) and Co(ii) compounds confirmed the diamagnetic character of the first complex and high-spin paramagnetic configuration of the latter. Nickel(ii) and cobalt(ii) complexes were additionally characterized by UV-Vis and IR spectroscopy. IR bands for ligands in the complexes were assigned with the help of the DFT vibrational frequency calculations.
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Affiliation(s)
- Anna Dołęga
- Department of Inorganic Chemistry, Chemical Faculty, Gdansk University of Technology, G. Narutowicza St. 11/12, 80-233 Gdansk, Poland.
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37
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Pladzyk A, Hnatejko Z, Baranowska K. Binuclear Co(II), Zn(II) and Cd(II) tri-tert-butoxysilanethiolates. Synthesis, crystal structure and spectroscopic studies. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.04.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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38
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39
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Jabłońska A, Ponikiewski Ł, Ejsmont K, Herman A, Dołęga A. Syntheses, spectroscopic and structural properties of phenoxysilyl compounds: X-ray structures, FT-IR and DFT calculations. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.09.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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40
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Thitiprasert S, Sooksai S, Thongchul N. 1,2-Diazole and 2,2,2-Trifluoroethanol and Their Regulatory Effects on Ethanol and Lactic Acid Formation in the Living Culture of Rhizopus oryzae. Appl Biochem Biotechnol 2013; 172:1673-86. [DOI: 10.1007/s12010-013-0627-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 10/30/2013] [Indexed: 10/26/2022]
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41
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Purification and enzymatic characterization of alcohol dehydrogenase from Arabidopsis thaliana. Protein Expr Purif 2013; 90:74-7. [PMID: 23707506 DOI: 10.1016/j.pep.2013.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 05/14/2013] [Accepted: 05/15/2013] [Indexed: 11/21/2022]
Abstract
Alcohol dehydrogenases (ADH) catalyze the interconversion between alcohols and aldehydes with the reduction of nicotinamide adenine dinucleotide (NAD(+)) to NADH. In this study, for the first time we report an over-expression and purification strategy for the Arabidosis thaliana ADH (AtADH), and characterize its enzymatic properties. AtADH was expressed in an Escherichia coli system, the polyhistidine-tag was removed after the recombinant AtADH protein was purified by metal chelating affinity chromatography. Activity assays demonstrated that AtADH has distinct enzymatic properties when compared with many well-known ADHs. It held peak activity at pH 10.5 and showed broad substrate selectivity for primary and secondary alcohols. The kinetic Km parameters for both ethanol and coenzyme were in the order of mM. This relative low affinity may reflect the need of the plant to maintain a supply of NAD(+) in nature. Different from yeast ADH, AtADH showed almost the same activity for short straight chain alcohols and reduced activity for secondary alcohols. This broad spectrum in alcohol selection and the observed higher catalytic activity (high Vmax (EtOH)) may result from the requirement of the single enzyme to accommodate many substrates.
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42
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Holló B, Rodić MV, Bera O, Jovičić M, Leovac VM, Tomić ZD, Mészáros Szécsényi K. Cation- and/or anion-directed reaction routes. Could the desolvation pattern of isostructural coordination compounds be related to their molecular structure? Struct Chem 2013. [DOI: 10.1007/s11224-013-0270-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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43
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Alzoubi BM, Walther M, Puchta R, van Eldik R. Mechanistic Studies on Water‐Exchange Reactions in [Zn(H
2
O)
4
L]
2+
·2H
2
O for L = sp
2
, sp
3
Oxygen‐Donor Ligands: A DFT Approach. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201200956] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Basam M. Alzoubi
- Inorganic Chemistry, Department of Chemistry and Pharmacy, University of Erlangen‐Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany, http://www.chemie.uni‐erlangen.de/vaneldik
- Department of Basic Science, Al‐Huson University College, Al‐Balqa Applied University, Irbid, Jordan
| | - Markus Walther
- Inorganic Chemistry, Department of Chemistry and Pharmacy, University of Erlangen‐Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany, http://www.chemie.uni‐erlangen.de/vaneldik
- Computer Chemistry Center, Department of Chemistry and Pharmacy, University of Erlangen‐Nürnberg, Nägelsbachstrasse 25, 91052 Erlangen, Germany, http://www.chemie.uni‐erlangen.de/puchta
| | - Ralph Puchta
- Inorganic Chemistry, Department of Chemistry and Pharmacy, University of Erlangen‐Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany, http://www.chemie.uni‐erlangen.de/vaneldik
- Computer Chemistry Center, Department of Chemistry and Pharmacy, University of Erlangen‐Nürnberg, Nägelsbachstrasse 25, 91052 Erlangen, Germany, http://www.chemie.uni‐erlangen.de/puchta
| | - Rudi van Eldik
- Inorganic Chemistry, Department of Chemistry and Pharmacy, University of Erlangen‐Nürnberg, Egerlandstrasse 1, 91058 Erlangen, Germany, http://www.chemie.uni‐erlangen.de/vaneldik
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44
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One dimensional coordination polymers generated from Cd(II) tri-tert-butoxysilanethiolates and flexible aliphatic diamines. Polyhedron 2013. [DOI: 10.1016/j.poly.2012.10.035] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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45
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Miecznikowski JR, Jasinski JP, Lynn MA, Jain SS, Butrick EE, Drozdoski AER, Archer KA, Panarra JT. Synthesis, characterization, density functional theory calculations, and activity of a thione-containing NNN-bound zinc pincer complex based on a bis-triazole precursor. Inorganica Chim Acta 2013. [DOI: 10.1016/j.ica.2012.07.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Baranowska K, Bulman M, Dołęga A. (1H-Pyrazole-κN)bis-(tri-tert-but-oxy-silane-thiol-ato-κ(2) O,S)cadmium. Acta Crystallogr Sect E Struct Rep Online 2012; 68:m1515. [PMID: 23468727 PMCID: PMC3588762 DOI: 10.1107/s1600536812047186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Accepted: 11/16/2012] [Indexed: 06/01/2023]
Abstract
The Cd(II) atom in the title complex, [Cd(C12H27O3SSi)2(C3H4N2)], is penta-coordinated by two O and two S atoms from the O,S-chelating silane-thiol-ate residue and one pyrazole N atom in a distorted geometry that is slightly closer to trigonal-bipyramidal than to square-based pyramidal. The pyrazole ligand is stabilized within the complex by an intra-molecular N-H⋯O hydrogen bond. One of the tert-butyl groups is disordered over two orientations with occupancy ratio of 0.534 (6):0.466 (6).
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Affiliation(s)
- Katarzyna Baranowska
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicz St., 80233 - PL Gdańsk, Poland
| | - Mateusz Bulman
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicz St., 80233 - PL Gdańsk, Poland
| | - Anna Dołęga
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdansk University of Technology, 11/12 G. Narutowicz St., 80233 - PL Gdańsk, Poland
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47
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Maenaka Y, Suenobu T, Fukuzumi S. Hydrogen evolution from aliphatic alcohols and 1,4-selective hydrogenation of NAD+ catalyzed by a [C,N] and a [C,C] cyclometalated organoiridium complex at room temperature in water. J Am Chem Soc 2012; 134:9417-27. [PMID: 22577897 DOI: 10.1021/ja302788c] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A [C,N] cyclometalated Ir complex, [Ir(III)(Cp*)(4-(1H-pyrazol-1-yl-κN(2))benzoic acid-κC(3))(H(2)O)](2)SO(4) [1](2)·SO(4), was reduced by aliphatic alcohols to produce the corresponding hydride complex [Ir(III)(Cp*)(4-(1H-pyrazol-1-yl-κN(2))-benzoate-κC(3))H](-)4 at room temperature in a basic aqueous solution (pH 13.6). Formation of the hydride complex 4 was confirmed by (1)H and (13)C NMR, ESI MS, and UV-vis spectra. The [C,N] cyclometalated Ir-hydride complex 4 reacts with proton to generate a stoichiometric amount of hydrogen when the pH was decreased to pH 0.8 by the addition of diluted sulfuric acid. Photoirradiation (λ > 330 nm) of an aqueous solution of the [C,N] cyclometalated Ir-hydride complex 4 resulted in the quantitative conversion to a unique [C,C] cyclometalated Ir-hydride complex 5 with no byproduct. The complex 5 catalyzed hydrogen evolution from ethanol in a basic aqueous solution (pH 11.9) under ambient conditions. The 1,4-selective catalytic hydrogenation of β-nicotinamide adenine dinucleotide (NAD(+)) by ethanol was also made possible by the complex 1 to produce 1,4-dihydro-β-nicotinamide adenine dinucleotide (1,4-NADH) at room temperature. The overall catalytic mechanism of hydrogenation of NAD(+), accompanied by the oxidation of ethanol, was revealed on the basis of the kinetic analysis and detection of the reaction intermediates.
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Affiliation(s)
- Yuta Maenaka
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA, Japan Science and Technology Agency, Suita, Japan
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48
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Syntheses, characterization, density functional theory calculations, and activity of tridentate SNS zinc pincer complexes based on bis-imidazole or bis-triazole precursors. Inorganica Chim Acta 2012. [DOI: 10.1016/j.ica.2011.12.047] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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49
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Baranowska K, Piwowarska N, Herman A, Dołęga A. Imidazolium silanethiolates relevant to the active site of cysteine proteases. A cooperative effect in a chain of NH+⋯S− hydrogen bonds. NEW J CHEM 2012. [DOI: 10.1039/c2nj40114b] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Dołęga A, Marynowski W, Baranowska K, Śmiechowski M, Stangret J. Intramolecular Interactions in Crystals of Tris(2,6-diisopropylphenoxy)silanethiol and Its Sodium Salts. Inorg Chem 2011; 51:836-43. [DOI: 10.1021/ic2013073] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anna Dołęga
- Department
of Inorganic Chemistry and ‡Department of Physical Chemistry, Gdansk University of Technology, Chemical Faculty,
ul. Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Wojciech Marynowski
- Department
of Inorganic Chemistry and ‡Department of Physical Chemistry, Gdansk University of Technology, Chemical Faculty,
ul. Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Katarzyna Baranowska
- Department
of Inorganic Chemistry and ‡Department of Physical Chemistry, Gdansk University of Technology, Chemical Faculty,
ul. Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Maciej Śmiechowski
- Department
of Inorganic Chemistry and ‡Department of Physical Chemistry, Gdansk University of Technology, Chemical Faculty,
ul. Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Janusz Stangret
- Department
of Inorganic Chemistry and ‡Department of Physical Chemistry, Gdansk University of Technology, Chemical Faculty,
ul. Narutowicza 11/12, 80-233 Gdańsk, Poland
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