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Mohebbi Jahromi Z, Asadi Z, Eigner V, Dusek M, Rastegari B. A new phenoxo-bridged dicopper Schiff base Complex: Synthesis, Crystal Structure, DNA/BSA Interaction, Cytotoxicity Assay and Catecholase Activity. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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2
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Akhtar MN, Shahid M, Ahmad MS, Zierkiewicz W, Michalczyk M, Taj MB, Khalid M, Hanif MA. Iron (III) complex exhibiting efficient catechol oxidase activity: Experimental, kinetic and theoretical approach. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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3
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Salunke PS, Puranik AA, Kulkarni ND. Histamine derived dimer of µ-Chlorido-µ-Phenoxido Dicopper(II) complex as a Potential Enzyme Mimic with Catecholase activity. Polyhedron 2022. [DOI: 10.1016/j.poly.2022.115700] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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4
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Chen QC, Fridman N, Tumanskii B, Gross Z. A chromophore-supported structural and functional model of dinuclear copper enzymes, for facilitating mechanism of action studies. Chem Sci 2021; 12:12445-12450. [PMID: 34603675 PMCID: PMC8480325 DOI: 10.1039/d1sc02593g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 08/09/2021] [Indexed: 11/25/2022] Open
Abstract
Type III dicopper centres are the heart of the reactive sites of enzymes that catalyze the oxidation of catechols. Numerous synthetic model complexes have been prepared to uncover the fundamental chemistry involved in these processes, but progress is still lagging much behind that for heme enzymes. One reason is that the latter gain very much from the informative spectroscopic features of their porphyrin-based metal-chelating ligand. We now introduce sapphyrin-chelated dicopper complexes and show that they may be isolated in different oxidation states and coordination geometries, with distinctive colors and electronic spectra due to the heme-like ligands. The dicopper(i) complex 1-Cu2 was characterized by 1H and 19F NMR spectroscopy of the metal-chelating sapphyrin, the oxygenated dicopper(ii) complex 1-Cu2O2 by EPR, and crystallographic data was obtained for the tetracopper(ii)-bis-sapphyrin complex [1-Cu2O2]2. This uncovered a non-heme [Cu4(OH)4]4− cluster, held together with the aid of two sapphyrin ligands, with structural features reminiscent of those of catechol oxidase. Biomimetic activity was demonstrated by the 1-Cu2O2 catalyzed aerobic oxidation of catechol to quinone; the sapphyrin ligand aided very much in gaining information about reactive intermediates and the rate-limiting step of the reaction. Di-copper chelation by sapphyrin facilitates reaction mechanism investigations and characterization of reactive intermediates regarding biomimetic catechol oxidation.![]()
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Affiliation(s)
- Qiu-Cheng Chen
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Haifa 32000 Israel
| | - Natalia Fridman
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Haifa 32000 Israel
| | - Boris Tumanskii
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Haifa 32000 Israel
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology Haifa 32000 Israel
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5
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Homrich AM, Farias G, Amorim SM, Xavier FR, Gariani RA, Neves A, Terenzi H, Peralta RA. Effect of Chelate Ring Size of Binuclear Copper(II) Complexes on Catecholase Activity and DNA Cleavage. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202001170] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Alana M. Homrich
- Federal University of Santa Catarina 88040900 Florianópolis SC Brazil
| | - Giliandro Farias
- Federal University of Santa Catarina 88040900 Florianópolis SC Brazil
| | - Suélen M. Amorim
- Federal University of Santa Catarina 88040900 Florianópolis SC Brazil
| | - Fernando R. Xavier
- Department of Chemistry State University of Santa Catarina 89219-710 Joinville SC Brazil
| | - Rogério A. Gariani
- Department of Chemistry State University of Santa Catarina 89219-710 Joinville SC Brazil
| | - Ademir Neves
- Federal University of Santa Catarina 88040900 Florianópolis SC Brazil
| | - Hernán Terenzi
- Department of Biochemistry Federal University of Santa Catarina 88040900 Florianópolis SC Brazil
| | - Rosely A. Peralta
- Federal University of Santa Catarina 88040900 Florianópolis SC Brazil
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Dolai M, Saha U. A simple Cu(II) complex of phenolic oxime: synthesis, crystal structure, supramolecular interactions, DFT calculation and catecholase activity study. Heliyon 2020; 6:e04942. [PMID: 33043159 PMCID: PMC7536372 DOI: 10.1016/j.heliyon.2020.e04942] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 07/02/2020] [Accepted: 09/11/2020] [Indexed: 11/28/2022] Open
Abstract
A copper (II) complex [Cu(4-MeO-salox)2](1) based on saloxime ligand was synthesized and characterized using single crystal X-ray diffraction studies. The geometry was further emphasized by DFT optimization. The complex was found to be pseudo-macrocyclic mononuclear having square planer geometry. The complex 1 shows two types of supramolecular hydrogen bonding interactions and forms the multi-dimensional framework with the help of CH∙∙∙O, OH∙∙∙O and π∙∙∙π(chelate) interactions. The complex 1 performs as efficient catalyst in catecholase activiy having good turnover number (TON), kcat = 22.97 h−1 where TON is the number of catechol molecules converted into quinone by catalyst molecule i.e 1 in a unit time.
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7
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Tuning the catecholase activity of bis(pyrazolyl)methane-based copper(II) complexes by substitutions of the ligand core: unraveling a dual O2/H2O2 oxidation mechanism. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119507] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Ali I, Mandal B, Saha R, Ghosh R, Chandra Majee M, Mondal D, Mitra P, Mandal D. Mono and tri-nuclear cobalt(III) complexes with sterically constrained phenol based N2O2 ligand: Synthesis, structure and catechol oxidase activity. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114429] [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]
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9
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Salonen P, Peuronen A, Lehtonen A. Bioinspired Mo, W and V complexes bearing a highly hydroxyl-functionalized Schiff base ligand. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119414] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Synthesis, structure, DFT study and catechol oxidase activity of Cu(II) complex with sterically constrained phenol based ligand. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.04.110] [Citation(s) in RCA: 9] [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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11
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Jana A, Brandão P, Jana H, Jana AD, Mondal G, Bera P, Santra A, Mahapatra AK, Bera P. Synthesis, structure and catalytic promiscuity of a napthyl-pyrazole Mn(II) complex and structure–activity relationships. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1658192] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Abhimanyu Jana
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
| | - Paula Brandão
- Department of Chemistry, CICECO, University of Aveiro, Aveiro, Portugal
| | - Harekrishna Jana
- Department of Microbiology, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
| | | | - Gopinath Mondal
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
| | - Pradip Bera
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
- Department of Chemistry, Kandi Raj College, Murshidabad, India
| | - Ananyakumari Santra
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
| | - Ajit Kumar Mahapatra
- Department of Chemistry, Indian Institute of Engineering Science and Technology, Howrah, India
| | - Pulakesh Bera
- Post Graduate Department of Chemistry, Panskura Banamali College (Vidyasagar University), Midnapore (East), India
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12
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Sheoran M, Bhar K, Jain S, Rana M, Khan TA, Sharma AK. Phenoxo-bridged dicopper complexes: Syntheses, characterizations, crystal structures and catecholase activity. Polyhedron 2019. [DOI: 10.1016/j.poly.2019.01.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Joy SR, Trufan E, Smith MD, Puscas C, Silaghi-Dumitrescu RL, Semeniuc RF. An unexpected μ4-oxido-bridged tetranuclear Cu(II) inverse coordination complex of a heptadentate bis(pyrazolyl)methane-based ligand: Synthesis, structure, spectroscopic properties, and catecholase activity. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.10.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Biomimetics of mononuclear and dinuclear Cu(II) and Fe(III) complexes of a newly synthesized piperazyl Mannich base with or without thiocyanate towards catechol. MONATSHEFTE FUR CHEMIE 2018. [DOI: 10.1007/s00706-018-2291-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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15
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Aggregation of mononuclear copper complexes by metal-oxidation-induced ligand deprotonation. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.08.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Kinetic studies of the impact of thiocyanate moiety on the catalytic properties of Cu(II) and Fe(III) complexes of a new Mannich base. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2017.12.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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17
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Singh O, Maji A, Singh UP, Ghosh K. Water-Soluble Copper Complex Derived from Ligand TETA TAHaving NNN Donors: Studies on Rapid Degradation of Organic Dyes, Catecholase and Phenoxazinone Synthase Activities. ChemistrySelect 2018. [DOI: 10.1002/slct.201800045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ovender Singh
- Department of Chemistry; IIT Roorkee; Roorkee - 247667, Uttarakhand India
| | - Ankur Maji
- Department of Chemistry; IIT Roorkee; Roorkee - 247667, Uttarakhand India
| | - Udai P. Singh
- Department of Chemistry; IIT Roorkee; Roorkee - 247667, Uttarakhand India
| | - Kaushik Ghosh
- Department of Chemistry; IIT Roorkee; Roorkee - 247667, Uttarakhand India
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18
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Gülzow J, Hörner G, Strauch P, Stritt A, Irran E, Grohmann A. Oxygen Delivery as a Limiting Factor in Modelling Dicopper(II) Oxidase Reactivity. Chemistry 2017; 23:7009-7023. [PMID: 28094884 DOI: 10.1002/chem.201605868] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Indexed: 11/10/2022]
Abstract
Deprotonation of ligand-appended alkoxyl groups in mononuclear copper(II) complexes of N,O ligands L1 and L2 , gave dinuclear complexes sharing symmetrical Cu2 O2 cores. Molecular structures of these mono- and binuclear complexes have been characterized by XRD, and their electronic structures by UV/Vis, 1 H NMR, EPR and DFT; moreover, catalytic performance as models of catechol oxidase was studied. The binuclear complexes with anti-ferromagnetically coupled copper(II) centers are moderately active in quinone formation from 3,5-di-tert-butyl-catechol under the established conditions of oxygen saturation, but are strongly activated when additional dioxygen is administered during catalytic turnover. This unforeseen and unprecedented effect is attributed to increased maximum reaction rates vmax , whereas the substrate affinity KM remains unaffected. Oxygen administration is capable of (partially) removing limitations to turnover caused by product inhibition. Because product inhibition is generally accepted to be a major limitation of catechol oxidase models, we think that our observations will be applicable more widely.
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Affiliation(s)
- Jana Gülzow
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Gerald Hörner
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Peter Strauch
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Strasse 24-25, 14476, Potsdam-Golm, Germany
| | - Anika Stritt
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Elisabeth Irran
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
| | - Andreas Grohmann
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 135, 10623, Berlin, Germany
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19
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Kumari S, Mahato AK, Maurya A, Singh VK, Kesharwani N, Kachhap P, Koshevoy IO, Haldar C. Syntheses and characterization of monobasic tridentate Cu(ii) Schiff-base complexes for efficient oxidation of 3,5-di-tert-butylcatechol and oxidative bromination of organic substrates. NEW J CHEM 2017. [DOI: 10.1039/c7nj00957g] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enhanced bifunctional catalytic activities are shown by monobasic tridentate Cu(ii) Schiff-base complexes.
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Affiliation(s)
- Sweta Kumari
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Arun Kumar Mahato
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Abhishek Maurya
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Vijay Kumar Singh
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Neha Kesharwani
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Payal Kachhap
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
| | - Igor O. Koshevoy
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | - Chanchal Haldar
- Department of Applied Chemistry
- Indian Institute of Technology (Indian School of Mines)
- Dhanbad 826004
- India
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20
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Saha M, Malviya N, Das M, Choudhuri I, Mobin SM, Pathak B, Mukhopadhyay S. Effect on catecholase activity and interaction with biomolecules of metal complexes containing differently tuned 5-substituted ancillary tetrazolato ligands. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.09.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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21
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Parween A, Naskar S, Mota AJ, Espinosa Ferao A, Chattopadhyay SK, Rivière E, Lewis W, Naskar S. C
i
-Symmetry, [2 × 2] grid, square copper complex with the N4,N5-bis(4-fluorophenyl)-1H-imidazole-4,5-dicarboxamide ligand: structure, catecholase activity, magnetic properties and DFT calculations. NEW J CHEM 2017. [DOI: 10.1039/c7nj01667k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
An antiferromagnetically coupled tetranuclear copper complex of a dinucleating bis amide ligand displays catecholase activity.
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Affiliation(s)
- Arfa Parween
- Department of Chemistry
- Birla Institute of Technology
- Ranchi-835215
- India
| | - Sumita Naskar
- Department of Chemistry
- RTC Institute of Technology
- Ranchi – 835219
- India
- Department of Chemistry
| | - Antonio J. Mota
- Department of Inorganic Chemistry
- Faculty of Sciences
- University of Granada
- 18002 Granada
- Spain
| | - Arturo Espinosa Ferao
- Department of Organic Chemistry
- University of Murcia
- Campus de Espinardo
- 30100 Murcia
- Spain
| | | | - Eric Rivière
- Equipe Chimie Inorganique
- Institut de Chimie Moléculaire et des Matériaux d'Orsay
- Université Paris Sud
- 91400 Orsay
- France
| | - William Lewis
- School of Chemistry
- University of Nottingham
- Nottingham NG7 2RD
- UK
| | - Subhendu Naskar
- Department of Chemistry
- Birla Institute of Technology
- Ranchi-835215
- India
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22
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Catechol oxidase and phenoxazinone synthase: Biomimetic functional models and mechanistic studies. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2015.11.002] [Citation(s) in RCA: 170] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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23
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Dey SK, Mukherjee A. Investigation of 3d-transition metal acetates in the oxidation of substituted dioxolene and phenols. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.06.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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24
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Chakraborty P, Adhikary J, Ghosh B, Sanyal R, Chattopadhyay SK, Bauzá A, Frontera A, Zangrando E, Das D. Relation between the Catalytic Efficiency of the Synthetic Analogues of Catechol Oxidase with Their Electrochemical Property in the Free State and Substrate-Bound State. Inorg Chem 2014; 53:8257-69. [DOI: 10.1021/ic5005177] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Prateeti Chakraborty
- Department of Chemistry, University of Calcutta, 92 A. P.
C. Road, Kolkata-700 009, India
| | - Jaydeep Adhikary
- Department of Chemistry, University of Calcutta, 92 A. P.
C. Road, Kolkata-700 009, India
| | - Bipinbihari Ghosh
- Department of Chemistry, Bengal Engineering and Science University, Howrah, India
| | - Ria Sanyal
- Department of Chemistry, University of Calcutta, 92 A. P.
C. Road, Kolkata-700 009, India
| | | | - Antonio Bauzá
- Departament de Química, Universitat de les Illes Balears, Crta. De Valldemossa km 7.5, 07122 Palma, Baleares, Spain
| | - Antonio Frontera
- Departament de Química, Universitat de les Illes Balears, Crta. De Valldemossa km 7.5, 07122 Palma, Baleares, Spain
| | - Ennio Zangrando
- Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Debasis Das
- Department of Chemistry, University of Calcutta, 92 A. P.
C. Road, Kolkata-700 009, India
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25
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Dey SK, Mukherjee A. The synthesis, characterization and catecholase activity of dinuclear cobalt(ii/iii) complexes of an O-donor rich Schiff base ligand. NEW J CHEM 2014. [DOI: 10.1039/c4nj00715h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A dinuclear CoIII complex oxidizes 3,5-di-tert-butylcatechol by binding to two molecules of the substrate simultaneously during oxidation along with the formation of H2O2.
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Affiliation(s)
- Suman Kr Dey
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur-741246, India
| | - Arindam Mukherjee
- Department of Chemical Sciences
- Indian Institute of Science Education and Research Kolkata
- Mohanpur-741246, India
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Ghosh T, Adhikary J, Chakraborty P, Sukul PK, Jana MS, Mondal TK, Zangrando E, Das D. A radical pathway in catecholase activity with nickel(ii) complexes of phenol based “end-off” compartmental ligands. Dalton Trans 2014; 43:841-52. [DOI: 10.1039/c3dt51419f] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Allen SE, Walvoord RR, Padilla-Salinas R, Kozlowski MC. Aerobic copper-catalyzed organic reactions. Chem Rev 2013; 113:6234-458. [PMID: 23786461 PMCID: PMC3818381 DOI: 10.1021/cr300527g] [Citation(s) in RCA: 1228] [Impact Index Per Article: 111.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Scott E. Allen
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Ryan R. Walvoord
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Rosaura Padilla-Salinas
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Marisa C. Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
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29
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Mandal S, Mukherjee J, Lloret F, Mukherjee R. Modeling tyrosinase and catecholase activity using new m-Xylyl-based ligands with bidentate alkylamine terminal coordination. Inorg Chem 2012. [PMID: 23194383 DOI: 10.1021/ic3013848] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chemical model systems possessing the reactivity aspects of both tyrosinase and catechol oxidase are presented. Using two m-xylyl-based ligands providing bidentate alkylamine terminal coordination, 1,3-bis[(N,N-dimethylaminoethyl)aminomethyl]benzene (L(H,H)) and 1,3-bis[(N,N,N'-trimethylaminoethyl)aminomethyl]benzene (L(Me,Me)), four new dicopper(I) complexes, [Cu(I)(2)(L(H,H))(MeCN)(4)][ClO(4)](2) (1), [Cu(I)(2)(L(H,H))(PPh(3))(2)(MeCN)(2)][ClO(4)](2) (2), [Cu(I)(2)(L(Me,Me))(MeCN)(2)][ClO(4)](2) (3), and [Cu(I)(2)(L(Me,Me))(PPh(3))(2)][ClO(4)](2) (4), have been synthesized and characterized. Complex 2 has been structurally characterized. Reaction of the dicopper(I) complex 3(2+) with dioxygen at 183 K generates putative bis(μ-oxo)dicopper(III) intermediate (absorption spectroscopy). Oxygenation of 1 and 3 brings about m-xylyl-ring hydroxylation (monooxygenase-like activity), with a noticeable color change from pale-yellow to dark green. The presence of phenoxo- and hydroxo-bridges in the end products [Cu(II)(2)(L(H,H)-O)(OH)(MeCN)(2)][ClO(4)](2) (5) and [Cu(II)(2)(L(Me,Me)-O)(OH)(OClO(3))][ClO(4)]·MeCN(6) has been authenticated by structural characterization. Oxygenation of 3 afforded not only the green complex 6 isolation but also a blue complex [Cu(II)(2)(L(Me,Me))(OH)(2)][ClO(4)](2) (7). Variable temperature magnetic susceptibility measurements on 5 and 6 establish that the Cu(II) centers are strongly antiferromagnetically coupled [singlet-triplet energy gap (J) = -528 cm(-1) (5) and -505 cm(-1) (6)]. The abilities of phenoxo- and hydroxo-bridged dicopper(II) complexes 5 and 6, the previously reported complex [Cu(II)(2)(L(1)-O)(OH)(OClO(3))(2)]·1.5H(2)O (8) (L(1)-OH = 1,3-bis[(2-dimethylaminoethyl)iminomethyl]phenol), and [Cu(II)(2)(L(2)-O)(OH)(OClO(3))()][ClO(4)]() (9) (L(2)-OH = 1,3-[(2-dimethylaminoethyl)iminomethyl][(N,N,N'-trimethyl)aminoethyl]-4-methylphenol) have been examined to catalyze the oxidation of catechol to quinone (catecholase activity of tyrosinase and catechol oxidase-like activity) by employing the model substrate 3,5-di-tert-butylcatechol. Saturation kinetic studies have been performed on these systems to arrive at the following reactivity order [k(cat)/K(M) (catalytic efficiency) × 10(-3) (M(-1) h(-1))]: 470 (6) > 367 (5) > 128 (9) > 90 (8).
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Affiliation(s)
- Sukanta Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208 016, India
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Rocha BG, Wanke R, Guedes da Silva MFC, Luzyanin KV, Martins LM, Smolénski P, Pombeiro AJ. Reactivity of bulky tris(phenylpyrazolyl)methanesulfonate copper(I) complexes towards small unsaturated molecules. J Organomet Chem 2012. [DOI: 10.1016/j.jorganchem.2012.03.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Comba P, Martin B, Muruganantham A, Straub J. Structure, Bonding, and Catecholase Mechanism of Copper Bispidine Complexes. Inorg Chem 2012; 51:9214-25. [DOI: 10.1021/ic3004917] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peter Comba
- Universität Heidelberg, Anorganisch-Chemisches
Institut, INF 270, D-69120 Heidelberg, Germany
| | - Bodo Martin
- Universität Heidelberg, Anorganisch-Chemisches
Institut, INF 270, D-69120 Heidelberg, Germany
| | - Amsaveni Muruganantham
- Universität Heidelberg, Anorganisch-Chemisches
Institut, INF 270, D-69120 Heidelberg, Germany
| | - Johannes Straub
- Universität Heidelberg, Anorganisch-Chemisches
Institut, INF 270, D-69120 Heidelberg, Germany
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Guha A, Chattopadhyay T, Paul ND, Mukherjee M, Goswami S, Mondal TK, Zangrando E, Das D. Radical Pathway in Catecholase Activity with Zinc-Based Model Complexes of Compartmental Ligands. Inorg Chem 2012; 51:8750-9. [DOI: 10.1021/ic300400v] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Averi Guha
- Department
of Chemistry, University of Calcutta, 92,
A. P. C. Road, Kolkata
700 009, India
| | | | - Nanda Dulal Paul
- Department
of Inorganic Chemistry, Indian Association for the Cultivation of Science,
Jadavpur, Kolkata 700 032, India
| | - Madhuparna Mukherjee
- Department
of Chemistry, University of Calcutta, 92,
A. P. C. Road, Kolkata
700 009, India
| | - Somen Goswami
- Department
of Chemistry, University of Calcutta, 92,
A. P. C. Road, Kolkata
700 009, India
| | - Tapan Kumar Mondal
- Department of Chemistry, Jadavpur University, Jadavpur, Kolkata 700 032, India
| | - Ennio Zangrando
- Dipartimento di Scienze Chimiche
e Farmaceutiche, University of Trieste,
Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Debasis Das
- Department
of Chemistry, University of Calcutta, 92,
A. P. C. Road, Kolkata
700 009, India
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Martínez A, Membrillo I, Ugalde-Saldívar VM, Gasque L. Dinuclear Copper Complexes with Imidazole Derivative Ligands: A Theoretical Study Related to Catechol Oxidase Activity. J Phys Chem B 2012; 116:8038-44. [DOI: 10.1021/jp300444m] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Ana Martínez
- Instituto de Investigaciones
en Materiales, Universidad Nacional Autónoma de México, Circuito Exterior S. N., Ciudad Universitaria
CP 04510, México D.F. México
| | - Ingrid Membrillo
- Departamento de Química
Inorgánica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria
04510, México DF, México
| | - Victor M. Ugalde-Saldívar
- Departamento de Química
Inorgánica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria
04510, México DF, México
| | - Laura Gasque
- Departamento de Química
Inorgánica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria
04510, México DF, México
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Biswas A, Das LK, Drew MGB, Aromí G, Gamez P, Ghosh A. Synthesis, Crystal Structures, Magnetic Properties and Catecholase Activity of Double Phenoxido-Bridged Penta-Coordinated Dinuclear Nickel(II) Complexes Derived from Reduced Schiff-Base Ligands: Mechanistic Inference of Catecholase Activity. Inorg Chem 2012; 51:7993-8001. [DOI: 10.1021/ic202748m] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Apurba Biswas
- Department
of Chemistry, University
College of Science, University of Calcutta, 92 APC Road, Kolkata 700 009, India
| | - Lakshmi Kanta Das
- Department
of Chemistry, University
College of Science, University of Calcutta, 92 APC Road, Kolkata 700 009, India
| | - Michael G. B. Drew
- School of Chemistry, The University of Reading, P.O BOX 224, Whiteknights,
Reading RG 66AD, United Kingdom
| | - Guillem Aromí
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - Patrick Gamez
- Departament de Química
Inorgànica, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluís Companys, 23, 08010 Barcelona, Spain
| | - Ashutosh Ghosh
- Department
of Chemistry, University
College of Science, University of Calcutta, 92 APC Road, Kolkata 700 009, India
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Silavi R, Divsalar A, Saboury AA. A short review on the structure-function relationship of artificial catecholase/tyrosinase and nuclease activities of Cu-complexes. J Biomol Struct Dyn 2012; 30:752-72. [PMID: 22731989 DOI: 10.1080/07391102.2012.689704] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The synthesis of metal complexes has vastly increased the scope of research for many scientists during the two last decades. Among these compounds, artificial tyrosinases, catecholases, proteases, and nucleases are some of the most studied due to their importance as modern tools in the fields of medicine, scientific research, and industry. Transition metals such as Zn(2+), Cu(2+), Fe(3+), Co(3+), Ni(2+), and lanthanide ions are the most commonly used. Among these ions, copper complexes have been the focus of the majority of studies thanks to their significant activity in comparison with other ions. Studies of copper-based tyrosinases, catecholases, and nucleases have revealed some of the overarching factors affecting reactions of all three types, which has led to improved activity and efficiency for all. Key factors include proper core-core distance, (Cu⋯Cu distance 2.90-2.99 Å), suitable solvent, and ligands with proper hydrophobic structure and geometry. In the present investigation, we review and introduce the proposed mechanisms and the kinetically effective factors of natural catecholase, tyrosinase, and nuclease and their Cu-based synthetic mimics.
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Affiliation(s)
- Reza Silavi
- Department of Biological Sciences, Kharazmi (Tarbiat Moallem) University, Tehran, Iran
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Arbuse A, Font M, Martínez MA, Fontrodona X, Prieto MJ, Moreno V, Sala X, Llobet A. DNA-Cleavage Induced by New Macrocyclic Schiff base Dinuclear Cu(I) Complexes Containing Pyridyl Pendant Arms. Inorg Chem 2009; 48:11098-107. [DOI: 10.1021/ic901488j] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Xavier Fontrodona
- Serveis Científico-Tècnics Universitat de Girona, Campus de Montilivi, E-17071 Girona, Spain
| | - Ma José Prieto
- Departament de Microbiologia Universitat de Barcelona, Martí i Franquès 1-11, E-08028 Barcelona, Spain
| | | | - Xavier Sala
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain
| | - Antoni Llobet
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, E-43007 Tarragona, Spain
- Departament de Química, Universitat Autònoma de Barcelona, Ceranyola del Vallès, E-0194 Barcelona, Spain
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Wanke R, Smoleński P, da Silva MFCG, Martins LMDRS, Pombeiro AJL. Cu(I) complexes bearing the new sterically demanding and coordination flexible tris(3-phenyl-1-pyrazolyl)methanesulfonate ligand and the water-soluble phosphine 1,3,5-triaza-7-phosphaadamantane or related ligands. Inorg Chem 2008; 47:10158-68. [PMID: 18841929 DOI: 10.1021/ic801254b] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The new sterically hindered scorpionate tris(3-phenylpyrazolyl)methanesulfonate (Tpms(Ph))(-) has been synthesized and its coordination behavior toward a Cu(I) center, in the presence of 1,3,5-triaza-7-phosphaadamantane (PTA), N-methyl-1,3,5-triaza-7-phosphaadamantane tetraphenylborate ((mPTA)[BPh4]) or hexamethylenetetramine (HMT) has been studied. The reaction between Li(Tpms(Ph)) (1) and [Cu(MeCN)4][PF6] yields [Cu(Tpms(Ph))(MeCN)] (2) which, upon further acetonitrile displacement on reaction with PTA, HMT, or (mPTA)[BPh4], gives the corresponding complexes [Cu(Tpms(Ph))(PTA)] (3), [Cu(Tpms(Ph))(HMT)] (4), and [Cu(Tpms(Ph))(mPTA)][PF6] (5). All the compounds have been characterized by (1)H, (31)P, (13)C, COSY or HMQC-NMR, IR, elemental analysis, and single crystal X-ray diffraction. In the complexes (3) and (5), which bear a phosphine ligand (i.e., PTA and mPTA, respectively), the new scorpionate ligand shows the typical N, N, N-coordination mode, whereas in (2) and (4), bearing a N-donor ligand (i.e., MeCN and HMT, respectively), it binds the metal via the N,N,O chelating mode, involving the sulfonate moiety.
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Affiliation(s)
- Riccardo Wanke
- Centro de Quimica Estrutural, Complexo I, Instituto Superior Tecnico, TU Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
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39
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Banu KS, Chattopadhyay T, Banerjee A, Bhattacharya S, Suresh E, Nethaji M, Zangrando E, Das D. Catechol Oxidase Activity of a Series of New Dinuclear Copper(II) Complexes with 3,5-DTBC and TCC as Substrates: Syntheses, X-ray Crystal Structures, Spectroscopic Characterization of the Adducts and Kinetic Studies. Inorg Chem 2008; 47:7083-93. [DOI: 10.1021/ic701332w] [Citation(s) in RCA: 159] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kazi Sabnam Banu
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata −700 009, India, Department of Chemistry, Maharaja Manindra Chandra College, Kolkata - 700 003, India, Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore- 560 012, India, and Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Tanmay Chattopadhyay
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata −700 009, India, Department of Chemistry, Maharaja Manindra Chandra College, Kolkata - 700 003, India, Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore- 560 012, India, and Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Arpita Banerjee
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata −700 009, India, Department of Chemistry, Maharaja Manindra Chandra College, Kolkata - 700 003, India, Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore- 560 012, India, and Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Santanu Bhattacharya
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata −700 009, India, Department of Chemistry, Maharaja Manindra Chandra College, Kolkata - 700 003, India, Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore- 560 012, India, and Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Eringathodi Suresh
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata −700 009, India, Department of Chemistry, Maharaja Manindra Chandra College, Kolkata - 700 003, India, Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore- 560 012, India, and Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Munirathinam Nethaji
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata −700 009, India, Department of Chemistry, Maharaja Manindra Chandra College, Kolkata - 700 003, India, Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore- 560 012, India, and Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Ennio Zangrando
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata −700 009, India, Department of Chemistry, Maharaja Manindra Chandra College, Kolkata - 700 003, India, Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore- 560 012, India, and Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
| | - Debasis Das
- Department of Chemistry, University of Calcutta, 92, A. P. C. Road, Kolkata −700 009, India, Department of Chemistry, Maharaja Manindra Chandra College, Kolkata - 700 003, India, Analytical Science Discipline, Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, India, Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore- 560 012, India, and Dipartimento di Scienze Chimiche, University of Trieste, Via L. Giorgieri 1, 34127 Trieste, Italy
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A dicopper complex with distant metal centers. Structure, magnetic properties, electrochemistry and catecholase activity. J Inorg Biochem 2008; 102:1227-35. [DOI: 10.1016/j.jinorgbio.2007.12.032] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2007] [Revised: 11/15/2007] [Accepted: 12/17/2007] [Indexed: 11/19/2022]
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Comba P, Kerscher M, Schiek W. Bispidine Coordination Chemistry. PROGRESS IN INORGANIC CHEMISTRY 2008. [DOI: 10.1002/9780470144428.ch9] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Mijangos E, Reedijk J, Gasque L. Copper(ii) complexes of a polydentate imidazole-based ligand. pH effect on magnetic coupling and catecholase activity. Dalton Trans 2008:1857-63. [PMID: 18369492 DOI: 10.1039/b714283h] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A potentially dodecadentate N8O4-donor ligand obtained from 2,2'-biimidazole and l-valine and its tetranuclear Cu(ii) complexes in different degrees of protonation were characterized by chemical and spectroscopic methods. The extensive solution studies performed reveal that the rise in pH media leads successively to the formation of imidazolato (pKa(1) and pKa(2) and hydroxido (pKa(3) and pKa(4)) bridges. A frozen solution EPR study shows a decrease in the signal intensity until an EPR silent spectrum is observed, upon increasing the basicity of the solution. The catalytic performance of the oxidation of 3,5-di-tert-butylcatechol to its corresponding quinone was studied using UV-Vis-NIR absorption spectroscopic methods in CH3CN-H2O and in CH3OH-H2O at pH = 7.5, 8.0 and 8.5. A marked increase in activity, consistent with the formation of the hydroxide bridged species, is observed at pH = 8.5 in both solvent mixtures, but the activity is significantly higher in CH3OH-H2O.
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Affiliation(s)
- Edgar Mijangos
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México D. F, 04510, México
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Grigoropoulou G, Christoforidis KC, Louloudi M, Deligiannakis Y. Structure-catalytic function relationship of SiO2-immobilized mononuclear Cu complexes: an EPR study. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:10407-18. [PMID: 17764200 DOI: 10.1021/la700815d] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Mononuclear CuL and Cu(2L) complexes, where L is propyl-thiazol-2-ylmethylene-amine, covalently immobilized onto SiO2, can catalyze efficiently the oxidation of 3,5-di-t-butylcatechol (DTBC) to 3,5-di-t-butylquinone (DTBQ) by utilizing ambient O2 as oxidant. By increasing the loading of L on SiO2, the DTBQ formation can be improved up to 400% vs the homogeneous catalyst. Equally important is however that grafting per se at low loading is not adequate for an improved catalytic activity. Appropriate loadings have to be achieved, which then may result in significant catalytic performance. Based on EPR spectroscopy a theoretical method is developed, eq A12, for spin-spin distance estimation in heterogeneously dispersed surface complexes. Practical rules including error estimates are provided. By applying this method to the [SiO2-CuL] catalysts it is shown that mononuclear copper complexes fixed on SiO2 with Cu...Cu distances as short as 4.9 +/- 0.3 A are responsible for the improved catalytic activity. The present results demonstrate that mononuclear Cu complexes can have considerable catecholase activity, if the proper geometrical proximity can be fixed. Grafting on SiO2 may be an efficient method for engineering catalysts with improved performance.
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Affiliation(s)
- Georgia Grigoropoulou
- Department of Environmental and Natural Resources Management, University of Ioannina, Seferi 2, 30100 Agrinio, Greece
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Güell M, Siegbahn PEM. Theoretical study of the catalytic mechanism of catechol oxidase. J Biol Inorg Chem 2007; 12:1251-64. [PMID: 17891425 DOI: 10.1007/s00775-007-0293-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2007] [Accepted: 08/16/2007] [Indexed: 10/22/2022]
Abstract
The mechanism for the oxidation of catechol by catechol oxidase has been studied using B3LYP hybrid density functional theory. On the basis of the X-ray structure of the enzyme, the molecular system investigated includes the first-shell protein ligands of the two metal centers as well as the second-shell ligand Cys92. The cycle starts out with the oxidized, open-shell singlet complex with oxidation states Cu(2)(II,II) with a mu-eta(2):eta(2) bridging peroxide, as suggested experimentally, which is obtained from the oxidation of Cu(2)(I,I) by dioxygen. The substrate of each half-reaction is a catechol molecule approaching the dicopper complex: the first half-reaction involves Cu(I) oxidation by peroxide and the second one Cu(II) reduction. The quantitative potential energy profile of the reaction is discussed in connection with experimental data. Since no protons leave or enter the active site during the catalytic cycle, no external base is required. Unlike the previous density functional theory study, the dicopper complex has a charge of +2.
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Affiliation(s)
- Mireia Güell
- Institut de Química Computacional, Universitat de Girona, Campus de Montilivi, Girona, Spain.
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Belle C, Selmeczi K, Torelli S, Pierre JL. Chemical tools for mechanistic studies related to catechol oxidase activity. CR CHIM 2007. [DOI: 10.1016/j.crci.2006.10.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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47
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Born K, Comba P, Daubinet A, Fuchs A, Wadepohl H. Catecholase activity of dicopper(II)-bispidine complexes: stabilities and structures of intermediates, kinetics and reaction mechanism. J Biol Inorg Chem 2006; 12:36-48. [PMID: 16964505 DOI: 10.1007/s00775-006-0161-2] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2006] [Accepted: 08/09/2006] [Indexed: 10/24/2022]
Abstract
A mechanism for the oxidation of 3,5-di-tert-butylcatechol (dtbc) with dioxygen to the corresponding quinone (dtbq), catalyzed by bispidine-dicopper complexes (bispidines are various mono- and dinucleating derivatives of 3,7-diazabicyclo[3.3.1]nonane with bis-tertiary-amine-bispyridyl or bis-tertiary-amine-trispyridyl donor sets), is proposed on the basis of (1) the stoichiometry of the reaction as well as the stabilities and structures [X-ray, density functional theory (B3LYP, TZV)] of the bispidine-dicopper(II)-3,4,5,6-tetrachlorcatechol intermediates, (2) formation kinetics and structures (molecular mechanics, MOMEC) of the end-on peroxo-dicopper(II) complexes and (3) kinetics of the stoichiometric (anaerobic) and catalytic (aerobic) copper-complex-assisted oxidation of dtbc. This involves (1) the oxidation of the dicopper(I) complexes with dioxygen to the corresponding end-on peroxo-dicopper(II) complexes, (2) coordination of dtbc as a bridging ligand upon liberation of H(2)O(2) and (3) intramolecular electron transfer to produce dtbq, which is liberated, and the dicopper(I) catalyst. Although the bispidine complexes have reactivities comparable to those of recently published catalysts with macrocyclic ligands, which seem to reproduce the enzyme-catalyzed process in various reaction sequences, a strikingly different oxidation mechanism is derived from the bispidine-dicopper-catalyzed reaction.
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Affiliation(s)
- Karin Born
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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Koval IA, Selmeczi K, Belle C, Philouze C, Saint-Aman E, Gautier-Luneau I, Schuitema AM, van Vliet M, Gamez P, Roubeau O, Lüken M, Krebs B, Lutz M, Spek AL, Pierre JL, Reedijk J. Catecholase Activity of a Copper(II) Complex with a Macrocyclic Ligand: Unraveling Catalytic Mechanisms. Chemistry 2006; 12:6138-50. [PMID: 16832797 DOI: 10.1002/chem.200501600] [Citation(s) in RCA: 96] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We report the structure, properties and a mechanism for the catecholase activity of a tetranuclear carbonato-bridged copper(II) cluster with the macrocyclic ligand [22]pr4pz (9,22-dipropyl-1,4,9,14,17,22,27,28,29, 30-decaazapentacyclo[22.2.1.1(4,7).1(11,14). 1(17,20)]triacontane-5,7(28),11(29),12,18, 20(30),24(27),25-octaene). In this complex, two copper ions within a macrocyclic unit are bridged by a carbonate anion, which further connects two macrocyclic units together. Magnetic susceptibility studies have shown the existence of a ferromagnetic interaction between the two copper ions within one macrocyclic ring, and a weak antiferromagnetic interaction between the two neighboring copper ions of two different macrocyclic units. The tetranuclear complex was found to be the major compound present in solution at high concentration levels, but its dissociation into two dinuclear units occurs upon dilution. The dinuclear complex catalyzes the oxidation of 3,5-di-tert-butylcatechol to the respective quinone in methanol by two different pathways, one proceeding via the formation of semiquinone species with the subsequent production of dihydrogen peroxide as a byproduct, and another proceeding via the two-electron reduction of the dicopper(II) center by the substrate, with two molecules of quinone and one molecule of water generated per one catalytic cycle. The occurrence of the first pathway was, however, found to cease shortly after the beginning of the catalytic reaction. The influence of hydrogen peroxide and di-tert-butyl-o-benzoquinone on the catalytic mechanism has been investigated. The crystal structures of the free ligand and the reduced dicopper(I) complex, as well as the electrochemical properties of both the Cu(II) and the Cu(I) complexes are also reported.
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Affiliation(s)
- Iryna A Koval
- Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300 RA Leiden, The Netherlands
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Sreenivasulu B, Zhao F, Gao S, Vittal JJ. Synthesis, Structures and Catecholase Activity of a New Series of Dicopper(II) Complexes of Reduced Schiff Base Ligands. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200600022] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Koval IA, Gamez P, Belle C, Selmeczi K, Reedijk J. Synthetic models of the active site of catechol oxidase: mechanistic studies. Chem Soc Rev 2006; 35:814-40. [PMID: 16936929 DOI: 10.1039/b516250p] [Citation(s) in RCA: 420] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The ability of copper proteins to process dioxygen at ambient conditions has inspired numerous research groups to study their structural, spectroscopic and catalytic properties. Catechol oxidase is a type-3 copper enzyme usually encountered in plant tissues and in some insects and crustaceans. It catalyzes the conversion of a large number of catechols into the respective o-benzoquinones, which subsequently auto-polymerize, resulting in the formation of melanin, a dark pigment thought to protect a damaged tissue from pathogens. After the report of the X-ray crystal structure of catechol oxidase a few years earlier, a large number of publications devoted to the biomimetic modeling of its active site appeared in the literature. This critical review (citing 114 references) extensively discusses the synthetic models of this enzyme, with a particular emphasis on the different approaches used in the literature to study the mechanism of the catalytic oxidation of the substrate (catechol) by these compounds. These are the studies on the substrate binding to the model complexes, the structure-activity relationship, the kinetic studies of the catalytic oxidation of the substrate and finally the substrate interaction with (per)oxo-dicopper adducts. The general overview of the recognized types of copper proteins and the detailed description of the crystal structure of catechol oxidase, as well as the proposed mechanisms of the enzymatic cycle are also presented.
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Affiliation(s)
- Iryna A Koval
- Leiden Institute of Chemistry, Leiden University, P. O. Box 9502, 2300 RA Leiden, Netherlands
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