1
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Sun Q, Dong W, Bao B, Lyu Y, Han J, Guo R. Hydrolysis of Nerve Agent Simulants Accelerated by Stimuli-Responsive Dinuclear Catalysts. Inorg Chem 2024; 63:9975-9982. [PMID: 38747890 DOI: 10.1021/acs.inorgchem.4c01061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2024]
Abstract
The ability to control the catalytic activity of enzymes in chemical transformations is essential for the design and development of artificial catalysts. Herein, we report the synthesis and characterization of functional ligands featuring two 1,4,7,10-tetraazacyclododecane units linked by an azobenzene group and their corresponding dinuclear Zn(II) complexes. We show that the configuration switching (E/Z) of the azobenzene spacer in the ligands and their dinuclear Zn(II) complexes is reversibly controlled by irradiation with UV and visible light. The Zn(II)-metal complexes are light-responsive catalysts for the hydrolytic cleavage of nerve agent simulants, i.e., p-nitrophenyl diphenyl phosphate and methyl paraoxon. The catalytic activity of the Z-isomers of the dinuclear Zn(II) complexes outperformed that of the E-counterparts. Moreover, combining the less active E-isomers with gold nanoparticles induced an enhancement in the hydrolysis rate of p-nitrophenyl diphenyl phosphate. Kinetic analysis has shown that the catalytic site appears to involve a single metal ion. We explain our results by considering the different desolvation effects occurring in the catalyst's configurations in the solution and the catalytic systems involving gold nanoparticles.
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Affiliation(s)
- Qingqing Sun
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou ,Jiangsu 225002, China
| | - Wenqian Dong
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou ,Jiangsu 225002, China
| | - Baocheng Bao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou ,Jiangsu 225002, China
| | - Yanchao Lyu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou ,Jiangsu 225002, China
| | - Jie Han
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou ,Jiangsu 225002, China
| | - Rong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou ,Jiangsu 225002, China
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2
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Costa LMO, Reis IS, Fernandes C, Marques MM, Resende JALC, Krenske EH, Schenk G, Gahan LR, Horn A. Synthesis, characterization and computational investigation of the phosphatase activity of a dinuclear Zinc(II) complex containing a new heptadentate asymmetric ligand. J Inorg Biochem 2023; 239:112064. [PMID: 36410306 DOI: 10.1016/j.jinorgbio.2022.112064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/24/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022]
Abstract
We report the synthesis of a new asymmetric heptadentate ligand based on the 1,3-diaminopropan-2-ol backbone. The ligand 3-[[3-(bis-pyridin-2-ylmethyl-amino)-2-hydroxy-propyl]-(2-carbamoyl-ethyl)-amino]-propionamide (HL1) contains two amide and two pyridine groups attached to the 1,3-diaminopropan-2-ol core. Reaction between HL1 and Zn(ClO4)2.6H2O resulted in the formation of the dinuclear [Zn2(L1)(μ-OAc)](ClO4)2 complex, characterized by single crystal X-ray diffraction, 1H, 13C and 15N NMR, ESI-(+)-MS, CHN elemental analysis as well as infrared spectroscopy. The phosphatase activity of the complex was studied in the pH range 6-11 employing pyridinium bis(2,4-dinitrophenyl)phosphate (py(BDNPP)) as substrate. The complex exhibited activity dependent on the pH, presenting an asymmetric bell shape profile with the highest activity at pH 9; at high pH ligand exchange is rate-limiting. The hydrolysis of BDNPP- at pH 9 displayed behavior characteristic of Michaelis-Menten kinetics, with kcat = 5.06 × 10-3 min-1 and Km = 5.7 ± 1.0 mM. DFT calculations map out plausible reaction pathways and identify a terminal, Zn(II)-bound hydroxide as likely nucleophile.
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Affiliation(s)
- Luel M O Costa
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ 28013-602, Brazil
| | - Iago S Reis
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Christiane Fernandes
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Marcelo M Marques
- Colégio Universitário Geraldo Reis, Universidade Federal Fluminense, Niterói, RJ 24210-200, Brazil
| | - Jackson A L C Resende
- Instituto de Ciências Exatas e da Terra, Universidade Federal de Mato Grosso, Pontal do Araguaia, MT, Brazil
| | - Elizabeth H Krenske
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia; Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland, Australia, 4072; Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Lawrence R Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Adolfo Horn
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil.
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3
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Wilson LA, Pedroso MM, Peralta RA, Gahan LR, Schenk G. Biomimetics for purple acid phosphatases: A historical perspective. J Inorg Biochem 2023; 238:112061. [PMID: 36371912 DOI: 10.1016/j.jinorgbio.2022.112061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Revised: 10/23/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022]
Abstract
Biomimetics hold potential for varied applications in biotechnology and medicine but have also attracted particular interest as benchmarks for the functional study of their more complex biological counterparts, e.g. metalloenzymes. While many of the synthetic systems adequately mimic some structural and functional aspects of their biological counterparts the catalytic efficiencies displayed are mostly far inferior due to the smaller size and the associated lower complexity. Nonetheless they play an important role in bioinorganic chemistry. Numerous examples of biologically inspired and informed artificial catalysts have been reported, designed to mimic a plethora of chemical transformations, and relevant examples are highlighted in reviews and scientific reports. Herein, we discuss biomimetics of the metallohydrolase purple acid phosphatase (PAP), examples of which have been used to showcase synergistic research advances for both the biological and synthetic systems. In particular, we focus on the seminal contribution of our colleague Prof. Ademir Neves, and his group, pioneers in the design and optimization of suitable ligands that mimic the active site of PAP.
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Affiliation(s)
- Liam A Wilson
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Marcelo M Pedroso
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Rosely A Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC 88040-900, Brazil
| | - Lawrence R Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia; Sustainable Minerals Institute, The University of Queensland, Brisbane, Queensland 4072, Australia; Australian Institute of Bioengineering and Nanotechnology, The University of Queensland, Brisbane, Queensland 4072, Australia.
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4
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Luiz E, Farias G, Bortoluzzi AJ, Neves A, de Melo Mattos LM, Pereira MD, Xavier FR, Peralta RA. Hydrolytic activity of new bioinspired Mn IIIMn II and Fe IIIMn II complexes as mimetics of PAPs: Biological and environmental interest. J Inorg Biochem 2022; 236:111965. [PMID: 35988388 DOI: 10.1016/j.jinorgbio.2022.111965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/01/2022] [Accepted: 08/10/2022] [Indexed: 12/15/2022]
Abstract
Coordination compounds that mimic Purple Acid Phosphatases (PAPs) have drawn attention in the bioinorganic field due to their capacity to cleave phosphodiester bonds. However, their catalytic activity upon phosphate triesters is still unexplored. Thus, we report the synthesis and characterization of two binuclear complexes, [MnIIMnIII(L1)(OAc)2]BF4 (1) and [MnIIFeIII(L1)(OAc)2]BF4 (2) (H2L1 = 2-[N,N-bis-(2- pyridilmethyl)aminomethyl]-4-methyl-6-[N-(2-hydroxy-3-formyl-5-methylbenzyl)-N-(2-pyridylmethyl)aminomethyl]phenol), their hydrolytic activity and antioxidant potential. The complexes were fully characterized, including the X-Ray diffraction (XRD) of 1. Density functional theory (DFT) calculations were performed to better understand their electronic and structural properties and phosphate conjugates. The catalytic activity was analyzed for two model substrates, a diester (BDNPP) and a triester phosphate (DEDNPP). The results suggest enhancement of the hydrolysis reaction by 170 to 1500 times, depending on the substrate and complex. It was possible to accompany the catalytic reaction of DEDNPP hydrolysis by phosphorus nuclear magnetic resonance (31P NMR), showing that both 1 and 2 are efficient catalysts. Moreover, we also addressed that 1 and 2 present a relevant antioxidant potential, protecting the yeast Saccharomyces cerevisiae, used as eukaryotic model of study, against the exposure of cells to acute oxidative stress.
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Affiliation(s)
- Edinara Luiz
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Giliandro Farias
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Adailton J Bortoluzzi
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Ademir Neves
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil
| | - Larissa Maura de Melo Mattos
- Instituto de Química, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, 21941-909, Brazil; Rede Micologia RJ - FAPERJ
| | - Marcos Dias Pereira
- Instituto de Química, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, 21941-909, Brazil; Rede Micologia RJ - FAPERJ
| | - Fernando R Xavier
- Departamento de Química, Universidade do Estado de Santa Catarina, Joinville, Santa Catarina 89219-710, Brazil.
| | - Rosely A Peralta
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, Santa Catarina 88040-900, Brazil.
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5
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Brewer SM, Schwartz TM, Mekhail MA, Turan LS, Prior TJ, Hubin TJ, Janesko BG, Green KN. Mechanistic Insights into Iron-Catalyzed C–H Bond Activation and C–C Coupling. Organometallics 2021; 40:2467-2477. [DOI: 10.1021/acs.organomet.1c00211] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Samantha M. Brewer
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 S. Bowie, Fort Worth, Texas 76129, United States
| | - Timothy M. Schwartz
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 S. Bowie, Fort Worth, Texas 76129, United States
| | - Magy A. Mekhail
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 S. Bowie, Fort Worth, Texas 76129, United States
| | - Lara S. Turan
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 S. Bowie, Fort Worth, Texas 76129, United States
| | - Timothy J. Prior
- Department of Chemistry and Biochemistry, University of Hull, Hull HU6 7RX, U.K
| | - Timothy J. Hubin
- Department of Chemistry and Physics, Southwestern Oklahoma State University, 100 Campus Drive, Weatherford, Oklahoma 73096, United States
| | - Benjamin G. Janesko
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 S. Bowie, Fort Worth, Texas 76129, United States
| | - Kayla N. Green
- Department of Chemistry and Biochemistry, Texas Christian University, 2950 S. Bowie, Fort Worth, Texas 76129, United States
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6
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Terra WDS, Bull ÉS, Morcelli SR, Moreira RR, Maciel LLF, Almeida JCDA, Kanashiro MM, Fernandes C, Horn A. Antitumor activity via apoptotic cell death pathway of water soluble copper(II) complexes: effect of the diamino unit on selectivity against lung cancer NCI-H460 cell line. Biometals 2021; 34:661-674. [PMID: 33813688 DOI: 10.1007/s10534-021-00302-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 03/16/2021] [Indexed: 12/23/2022]
Abstract
The cytotoxicity against five human tumor cell lines (THP-1, U937, Molt-4, Colo-205 and NCI-H460) of three water soluble copper(II) coordination compounds containing the ligands 3,3'-(ethane-1,2-diylbis(azanediyl))dipropanamide (BCEN), 3,3'-(piperazine-1,4-diyl)dipropanamide (BPAP) or 3,3'-and (1,4-diazepane-1,4-diyl)dipropanamide (BPAH) are reported in this work. The ligands contain different diamine units (ethylenediamine, piperazine or homopiperazine) and two propanamide units attached to the diamine centers, resulting in N2O2 donor sets. The complex containing homopiperazine unit presented the best antiproliferative effect and selectivity against lung cancer cell line NCI-H460, showing inhibitory concentration (IC50) of 58 μmol dm-3 and Selectivity Index (SI) > 3.4. The mechanism of cell death promoted by the complex was investigated by Sub-G1 cell population analysis and annexin V and propidium iodide (PI) labeling techniques, suggesting that the complex promotes death by apoptosis. Transmission electron microscopy investigations are in agreement with the results presented by mitochondrial membrane potential analysis and also show the impairment of other organelles, including endoplasmic reticulum.
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Affiliation(s)
- Wagner da S Terra
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil
- Instituto Federal Fluminense, Campos dos Goytacazes, RJ, 28030-130, Brazil
| | - Érika S Bull
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil
- Instituto Federal Fluminense, Campos dos Goytacazes, RJ, 28030-130, Brazil
| | - Samila R Morcelli
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil
- Secretaria de Educação do Espírito Santo, Mimoso Do Sul, ES, 29400-000, Brazil
| | - Rafaela R Moreira
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil
- Centro Federal de Educação Tecnológica, Nova Friburgo, RJ, 28635-080, Brazil
| | - Leide Laura F Maciel
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - João Carlos de A Almeida
- Laboratório de Fisiologia e Bioquímica de Microrganismos, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Milton M Kanashiro
- Laboratório de Biologia do Reconhecer, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil
| | - Christiane Fernandes
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil
| | - Adolfo Horn
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, RJ, 28013-602, Brazil.
- Departamento de Química, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil.
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7
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Maurya RR, Mohan V, Singh P, Singh S, Bahadur I. A novel benzimidazole based cadmium (II) dinuclear complex as bioactive material with different coordination number and their interactions with BSA and HSA: Synthesis, characterization and docking studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Counsell AJ, Yu M, Shi M, Jones AT, Batten JM, Turner P, Todd MH, Rutledge PJ. Copper(ii) complexes of N-propargyl cyclam ligands reveal a range of coordination modes and colours, and unexpected reactivity. Dalton Trans 2021; 50:3931-3942. [PMID: 33635937 DOI: 10.1039/d0dt03736b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The coordination chemistry of N-functionalised cyclam ligands has a rich history, yet cyclam derivatives with pendant alkynes are largely unexplored. This is despite the significant potential and burgeoning application of N-propargyl cyclams and related compounds in the creation of diversely functionalised cyclam derivatives via copper-catalysed azide-alkyne 'click' reactions. Herein we describe single crystal X-ray diffraction and spectroscopic investigations of the coordination chemistry of copper(ii) complexes of cyclam derivatives with between 1 and 4 pendant alkynes. The crystal structures of these copper complexes unexpectedly reveal a range of coordination modes, and the surprising occurrence of five unique complexes within a single recrystallisation of the tetra-N-propargyl cyclam ligand. One of these species exhibits weak intramolecular copper-alkyne coordination, and another is formed by a surprising intramolecular copper-mediated hydroalkoxylation reaction with the solvent methanol, transforming one of the pendant alkynes to an enol ether. Multiple functionalisation of the tetra-N-propargyl ligand is demonstrated via a 'tetra-click' reaction with benzyl azide, and the copper-binding behaviour of the resulting tetra-triazole ligand is characterised spectroscopically.
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Affiliation(s)
- Andrew J Counsell
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia.
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9
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Gomes MAGB, Fernandes C, Gahan LR, Schenk G, Horn A. Recent Advances in Heterogeneous Catalytic Systems Containing Metal Ions for Phosphate Ester Hydrolysis. Chemistry 2021; 27:877-887. [PMID: 32659052 DOI: 10.1002/chem.202002333] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/09/2020] [Indexed: 11/09/2022]
Abstract
Organophosphates are a class of organic compounds that are important for living organisms, forming the building blocks for DNA, RNA, and some essential cofactors. Furthermore, non-natural organophosphates are widely used in industrial applications, including as pesticides; in laundry detergents; and, unfortunately, as chemical weapons agents. In some cases, the natural degradation of organophosphates can take thousands of years; this longevity creates problems associated with handling and the storage of waste generated by such phosphate esters, in particular. Efforts to develop new catalysts for the cleavage of phosphate esters have progressed in recent decades, mainly in the area of homogeneous catalysis. In contrast, the development of heterogeneous catalysts for the hydrolysis of organophosphates has not been as prominent. Herein, examples of heterogeneous systems are described and the importance of the development of heterogeneous catalysts applicable to organophosphate hydrolysis is highlighted, shedding light on recent advances related to different solid matrices that have been employed.
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Affiliation(s)
| | - Christiane Fernandes
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
| | - Lawrence R Gahan
- School of Chemistry and Microbial Sciences, The University of Queensland, Brisbane, 4072, Australia
| | - Gerhard Schenk
- School of Chemistry and Microbial Sciences, The University of Queensland, Brisbane, 4072, Australia
| | - Adolfo Horn
- Departamento de Química, Universidade Federal de Santa Catarina, Campus Trindade, Florianópolis, SC, 88040-900, Brazil
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10
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Hofmann AJ, Jandl C, Hess CR. Structural Differences and Redox Properties of Unsymmetric Diiron PDIxCy Complexes. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901173] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Andreas J. Hofmann
- Department of Chemistry and Catalysis Research Center Technische Universität München Lichtenbergstraße 4 85748 Garching Germany
| | - Christian Jandl
- Department of Chemistry and Catalysis Research Center Technische Universität München Lichtenbergstraße 4 85748 Garching Germany
| | - Corinna R. Hess
- Department of Chemistry and Catalysis Research Center Technische Universität München Lichtenbergstraße 4 85748 Garching Germany
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11
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Guanidine- and purine-functionalized ligands of FeIIIZnII complexes: effects on the hydrolysis of DNA. J Biol Inorg Chem 2019; 24:675-691. [DOI: 10.1007/s00775-019-01680-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 06/21/2019] [Indexed: 01/01/2023]
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12
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Horn Jr. A, Englert D, Roberts AE, Comba P, Schenk G, Krenske EH, Gahan LR. Synthesis, Magnetic Properties, and Catalytic Properties of a Nickel(II)-Dependent Biomimetic of Metallohydrolases. Front Chem 2018; 6:441. [PMID: 30320072 PMCID: PMC6168013 DOI: 10.3389/fchem.2018.00441] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 09/05/2018] [Indexed: 11/13/2022] Open
Abstract
A dinickel(II) complex of the ligand 1,3-bis(bis(pyridin-2-ylmethyl)amino)propan-2-ol (HL1) has been prepared and characterized to generate a functional model for nickel(II) phosphoesterase enzymes. The complex, [Ni2(L1)(μ-OAc)(H2O)2](ClO4)2·H2O, was characterized by microanalysis, X-ray crystallography, UV-visible, and IR absorption spectroscopy and solid state magnetic susceptibility measurements. Susceptibility studies show that the complex is antiferromagnetically coupled with the best fit parameters J = -27.4 cm-1, g = 2.29, D = 28.4 cm-1, comparable to corresponding values measured for the analogous dicobalt(II) complex [Co2(L1)(μ-OAc)](ClO4)2·0.5 H2O (J = -14.9 cm-1 and g = 2.16). Catalytic measurements with the diNi(II) complex using the substrate bis(2,4-dinitrophenyl)phosphate (BDNPP) demonstrated activity toward hydrolysis of the phosphoester substrate with K m ~10 mM, and k cat ~0.025 s-1. The combination of structural and catalytic studies suggests that the likely mechanism involves a nucleophilic attack on the substrate by a terminal nucleophilic hydroxido moiety.
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Affiliation(s)
- Adolfo Horn Jr.
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, Brazil
| | - Daniel Englert
- Anorganisch-Chemisches Institut and Interdisciplinary Center of Scientific Computing, Universität Heidelberg, Heidelberg, Germany
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Asha E. Roberts
- Anorganisch-Chemisches Institut and Interdisciplinary Center of Scientific Computing, Universität Heidelberg, Heidelberg, Germany
| | - Peter Comba
- Anorganisch-Chemisches Institut and Interdisciplinary Center of Scientific Computing, Universität Heidelberg, Heidelberg, Germany
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Elizabeth H. Krenske
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, Australia
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13
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Blackman AG, Gahan LR. Metal-coordinated Hydroxide as a Nucleophile: a Brief History. Z Anorg Allg Chem 2018. [DOI: 10.1002/zaac.201800045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Allan G. Blackman
- Centre for Biomedical and Chemical Sciences; School of Science; Auckland University of Technology; Private Bag 92006 Auckland New Zealand
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences; The University of Queensland; Brisbane Queensland Australia
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14
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Lau YH, Clegg JK, Price JR, Macquart RB, Todd MH, Rutledge PJ. Molecular Switches for any pH: A Systematic Study of the Versatile Coordination Behaviour of Cyclam Scorpionands. Chemistry 2017; 24:1573-1585. [DOI: 10.1002/chem.201703488] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Yu Heng Lau
- School of Chemistry The University of Sydney Sydney, New South Wales 2006 Australia
| | - Jack K. Clegg
- Current Address: School of Chemistry and Molecular Biosciences The University of Queensland St Lucia QLD 4072 Australia
| | - Jason R. Price
- Current Address: The Australian Synchrotron 800 Blackburn Rd. Clayton VIC 3168 Australia
| | - Rene B. Macquart
- School of Chemistry The University of Sydney Sydney, New South Wales 2006 Australia
| | - Matthew H. Todd
- School of Chemistry The University of Sydney Sydney, New South Wales 2006 Australia
| | - Peter J. Rutledge
- School of Chemistry The University of Sydney Sydney, New South Wales 2006 Australia
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15
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Camargo TP, Neves A, Peralta RA, Chaves C, Maia ECP, Lizarazo-Jaimes EH, Gomes DA, Bortolotto T, Norberto DR, Terenzi H, Tierney DL, Schenk G. Second-Sphere Effects in Dinuclear FeIIIZnII Hydrolase Biomimetics: Tuning Binding and Reactivity Properties. Inorg Chem 2017; 57:187-203. [DOI: 10.1021/acs.inorgchem.7b02384] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - David L. Tierney
- Department
of Chemistry and Biochemistry, Miami University, Oxford, Ohio 45056, United States,
| | - Gerhard Schenk
- School
of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane 4072, Australia
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16
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Selleck C, Clayton D, Gahan LR, Mitić N, McGeary RP, Pedroso MM, Guddat LW, Schenk G. Visualization of the Reaction Trajectory and Transition State in a Hydrolytic Reaction Catalyzed by a Metalloenzyme. Chemistry 2017; 23:4778-4781. [DOI: 10.1002/chem.201700866] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Christopher Selleck
- School of Chemistry and Molecular Biosciences The University of Queensland, St. Lucia Queensland 4072 Australia
| | - Daniel Clayton
- School of Chemistry and Molecular Biosciences The University of Queensland, St. Lucia Queensland 4072 Australia
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences The University of Queensland, St. Lucia Queensland 4072 Australia
| | - Nataša Mitić
- Department of Chemistry Maynooth University, Maynooth, Co. Kildare Ireland
| | - Ross P. McGeary
- School of Chemistry and Molecular Biosciences The University of Queensland, St. Lucia Queensland 4072 Australia
| | - Marcelo Monteiro Pedroso
- School of Chemistry and Molecular Biosciences The University of Queensland, St. Lucia Queensland 4072 Australia
| | - Luke W. Guddat
- School of Chemistry and Molecular Biosciences The University of Queensland, St. Lucia Queensland 4072 Australia
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences The University of Queensland, St. Lucia Queensland 4072 Australia
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17
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Counsell AJ, Jones AT, Todd MH, Rutledge PJ. A direct method for the N-tetraalkylation of azamacrocycles. Beilstein J Org Chem 2017; 12:2457-2461. [PMID: 28144313 PMCID: PMC5238601 DOI: 10.3762/bjoc.12.239] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Accepted: 11/01/2016] [Indexed: 11/23/2022] Open
Abstract
An efficient protocol for the direct synthesis of N-tetraalkylated derivatives of the azamacrocycles cyclam and cyclen has been developed, using a partially miscible aqueous–organic solvent system with propargyl bromide, benzyl bromide, and related halides. The method works most effectively when the reaction mixture is shaken, not stirred. A crystal structure of the N-tetrapropargyl cyclam derivative 1,4,8,11-tetra(prop-2-yn-1-yl)-1,4,8,11-tetraazacyclotetradecane diperchlorate is reported.
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Affiliation(s)
- Andrew J Counsell
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Angus T Jones
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Matthew H Todd
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Peter J Rutledge
- School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
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18
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Silva GADS, Amorim AL, Souza BD, Gabriel P, Terenzi H, Nordlander E, Neves A, Peralta RA. Synthesis and characterization of FeIII(μ-OH)ZnII complexes: effects of a second coordination sphere and increase in the chelate ring size on the hydrolysis of a phosphate diester and DNA. Dalton Trans 2017; 46:11380-11394. [DOI: 10.1039/c7dt02035j] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Effects of a second coordination sphere and of the chelate ring size in FeIII(μ-OH)ZnII complexes properties and catalysis.
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Affiliation(s)
| | - André Luiz Amorim
- Departamento de Química
- Universidade Federal de Santa Catarina
- 88040-900 Florianópolis
- Brazil
| | - Bernardo de Souza
- Departamento de Química
- Universidade Federal de Santa Catarina
- 88040-900 Florianópolis
- Brazil
| | - Philipe Gabriel
- Centro de Biologia Molecular Estrutural
- Departamento de Bioquímica
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Hernán Terenzi
- Centro de Biologia Molecular Estrutural
- Departamento de Bioquímica
- Universidade Federal de Santa Catarina
- Florianópolis
- Brazil
| | - Ebbe Nordlander
- Inorganic Chemistry Research Group
- Chemical Physics
- Center for Chemistry and Chemical Engineering
- Lund University
- SE-221 00 Lund
| | - Ademir Neves
- Departamento de Química
- Universidade Federal de Santa Catarina
- 88040-900 Florianópolis
- Brazil
| | - Rosely A. Peralta
- Departamento de Química
- Universidade Federal de Santa Catarina
- 88040-900 Florianópolis
- Brazil
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19
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Barman SK, Lloret F, Mukherjee R. A Bioinspired Dinickel(II) Hydrolase: Solvent Vapor-Induced Hydrolysis of Carboxyesters under Ambient Conditions. Inorg Chem 2016; 55:12696-12706. [PMID: 27989161 DOI: 10.1021/acs.inorgchem.6b01895] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
From the perspective of synthetic metallohydrolases, a phenoxo-bridged dinickel(II) complex [NiII2(L)(H2O)2(CH3OH)][ClO4]·CH3OH (1) (H3L = 2,6-bis[{{(5-bromo-2-hydroxybenzyl)(N',N″-(dimethylamino)ethyl)}amino}methyl]-4-methylphenol) has been synthesized and structurally characterized. The presence of a vacant coordination site and a weakly bound water molecule provides the scope for substrate binding to act as a metallohydrolase model. Ethyl acetate vapor diffusion at 298 K to a CH3CN/CH3OH solution of 1 results in the formation of a pentanuclear acetato-bridged complex [NiII5(H2L)2(μ3-OH)2(μ-O2CCH3)4][ClO4]2·CH3CO2C2H5 (2), demonstrating for the first time the metal-coordinated water-promoted hydrolysis of a carboxyester at room temperature. When the crystals of 1, moistened with a few drops of ethyl acetate, were kept for ethyl acetate vapor diffusion, it transforms into a monoacetato-bridged complex [NiII2(HL)(μ-O2CCH3)(H2O)2][ClO4]·4H2O (3). This kind of solvent (vapor)-induced single-crystal-to-single-crystal structural transformation concomitant with the hydrolysis of external substrate (ethyl acetate) is unprecedented. Reaction of H3L with 2 equiv of NiII(O2CCH3)2·4H2O, followed by the usual workup, and recrystallization from CH2Cl2 led to the isolation of [NiII2(H2L)(μ-O2CCH3)2][ClO4]·CH2Cl2·2H2O (4). Complex 4 is structurally different from 3, confirming that the reaction of NiII(O2CCH3)2·4H2O with H3L is a different phenomenon from the hydrolysis of ethyl acetate, promoted by NiII-coordinated water in 1. Complex 1 is also capable of hydrolyzing ethyl propionate to a propionato-bridged complex [NiII2(HL)(μ-O2CCH2CH3)(H2O)2][ClO4] (5). For the hydrolytic phenomena mentioned above, the coordinated ligand donor sites (phenolate and tertiary amine) provide a microenvironment around the dinickel(II) center to facilitate efficient stoichiometric hydrolysis of ethyl acetate and ethyl propionate under ambient conditions. Temperature-dependent magnetic studies of dimeric complexes 1, 4, and 5 reveal the presence of moderate antiferromagnetic coupling: J = -25.0(1) cm-1 for 1, J = -20.0(1) cm-1 for 4, and J = -18.80(8) cm-1 for 5. For pentanuclear complex 2, three types of magnetic-exchange interactions, two ferromagnetic (Ja = +16.02 cm-1, and Jb = +9.02 cm-1) and an antiferromagnetic (Jc = -49.7 cm-1), have been identified.
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Affiliation(s)
- Suman K Barman
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMOL), Universitat de València , Polígono de la Coma, s/n, 46980 Paterna, València, Spain
| | - Rabindranath Mukherjee
- Department of Chemistry, Indian Institute of Technology Kanpur , Kanpur 208 016, India.,Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata , Mohanpur 741 246, India
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20
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Bosch S, Comba P, Gahan LR, Schenk G. Asymmetric mono- and dinuclear Ga III and Zn II complexes as models for purple acid phosphatases. J Inorg Biochem 2016; 162:343-355. [DOI: 10.1016/j.jinorgbio.2015.12.028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 12/18/2015] [Accepted: 12/28/2015] [Indexed: 10/22/2022]
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21
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Synthesis, isolation and characterization of dinuclear oxidodiiron(III) complexes modified by monodentate pyridines. INORG CHEM COMMUN 2016. [DOI: 10.1016/j.inoche.2016.02.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Mendes LL, Englert D, Fernandes C, Gahan LR, Schenk G, Horn A. Metallohydrolase biomimetics with catalytic and structural flexibility. Dalton Trans 2016; 45:18510-18521. [DOI: 10.1039/c6dt03200a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The phosphatase activity of zinc complexes containing six- and seven-dentate ligands was evaluated through kinetic and31P NMR studies.
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Affiliation(s)
- Luisa L. Mendes
- Laboratório de Ciências Químicas
- Universidade Estadual do Norte Fluminense
- Campos dos Goytacazes/RJ
- Brazil
| | - Daniel Englert
- Anorganisch-Chemisches Institut
- Universität Heidelberg
- 69120 Heidelberg
- Germany
| | - Christiane Fernandes
- Laboratório de Ciências Químicas
- Universidade Estadual do Norte Fluminense
- Campos dos Goytacazes/RJ
- Brazil
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane
- Australia
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences
- The University of Queensland
- Brisbane
- Australia
| | - Adolfo Horn
- Laboratório de Ciências Químicas
- Universidade Estadual do Norte Fluminense
- Campos dos Goytacazes/RJ
- Brazil
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23
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Hisamatsu Y, Miyazawa Y, Yoneda K, Miyauchi M, Zulkefeli M, Aoki S. Supramolecular Complexes Formed by the Self-assembly of Hydrophobic Bis(Zn 2+-cyclen) Complexes, Copper, and Di- or Triimide Units for the Hydrolysis of Phosphate Mono- and Diesters in Two-Phase Solvent Systems (Cyclen=1,4,7,10-Tetraazacyclododecane). Chem Pharm Bull (Tokyo) 2016; 64:451-64. [DOI: 10.1248/cpb.c15-01014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | - Yuya Miyazawa
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Kakeru Yoneda
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | - Miki Miyauchi
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
| | | | - Shin Aoki
- Faculty of Pharmaceutical Sciences, Tokyo University of Science
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24
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Bosch S, Comba P, Gahan LR, Hanson GR, Noble C, Schenk G, Wadepohl H. Selective Coordination of Gallium(III), Zinc(II), and Copper(II) by an Asymmetric Dinucleating Ligand: A Model for Metallophosphatases. Chemistry 2015; 21:18269-79. [DOI: 10.1002/chem.201503348] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2015] [Indexed: 01/09/2023]
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25
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Shi H, Wang R, Yang J, Ren H, Liu S, Guo T. Novel imprinted nanocapsule with highly enhanced hydrolytic activity for organophosphorus pesticide degradation and elimination. Eur Polym J 2015. [DOI: 10.1016/j.eurpolymj.2015.09.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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26
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Bernhardt PV, Bosch S, Comba P, Gahan LR, Hanson GR, Mereacre V, Noble CJ, Powell AK, Schenk G, Wadepohl H. An Approach to More Accurate Model Systems for Purple Acid Phosphatases (PAPs). Inorg Chem 2015. [DOI: 10.1021/acs.inorgchem.5b00628] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Paul V. Bernhardt
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Simone Bosch
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
- Anorganisch-Chemisches Institut and Interdisciplinary
Center for Scientific Computing (IWR), Universität Heidelberg, Im Neuenheimer
Feld 270, D-69120 Heidelberg, Germany
| | - Peter Comba
- Anorganisch-Chemisches Institut and Interdisciplinary
Center for Scientific Computing (IWR), Universität Heidelberg, Im Neuenheimer
Feld 270, D-69120 Heidelberg, Germany
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Graeme R. Hanson
- Centre for Advanced
Imaging, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Valeriu Mereacre
- Institut für Anorganisch Chemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, D-76131 Karlsruhe, Germany
| | - Christopher J. Noble
- Centre for Advanced
Imaging, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Annie K. Powell
- Institut für Anorganisch Chemie, Karlsruhe Institute of Technology (KIT), Engesserstr. 15, D-76131 Karlsruhe, Germany
- Institute of Nanotechnology (INT), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, D-76021 Karlsruhe, Germany
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut and Interdisciplinary
Center for Scientific Computing (IWR), Universität Heidelberg, Im Neuenheimer
Feld 270, D-69120 Heidelberg, Germany
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27
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Roberts AE, Schenk G, Gahan LR. A Heterodinuclear FeIIIZnIIComplex as a Mimic for Purple Acid Phosphatase with Site-Specific ZnIIBinding. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500351] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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28
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Camargo TP, Maia FF, Chaves C, de Souza B, Bortoluzzi AJ, Castilho N, Bortolotto T, Terenzi H, Castellano EE, Haase W, Tomkowicz Z, Peralta RA, Neves A. Synthesis, characterization, hydrolase and catecholase activity of a dinuclear iron(III) complex: Catalytic promiscuity. J Inorg Biochem 2015; 146:77-88. [DOI: 10.1016/j.jinorgbio.2015.02.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 02/24/2015] [Accepted: 02/24/2015] [Indexed: 12/20/2022]
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29
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Phosphate ester hydrolysis catalyzed by a dinuclear cobalt(II) complex equipped with intramolecular β-cyclodextrins. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2014.10.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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30
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Döhlert P, Irran E, Kretschmer R, Enthaler S. Synthesis, characterization and application of iron N-substituted imidazole complexes with the motif ClFeL4OFeCl3. INORG CHEM COMMUN 2015. [DOI: 10.1016/j.inoche.2014.10.038] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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31
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Bélières M, Chouini-Lalanne N, Déjugnat C. Synthesis, self-assembly, and catalytic activity of histidine-based structured lipopeptides for hydrolysis reactions in water. RSC Adv 2015. [DOI: 10.1039/c5ra02853a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
When interfacial catalysis and organocatalysis meet: self-assembling histidine-based lipopeptides catalyse ester hydrolysis in water, depending on aggregation.
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Affiliation(s)
- M. Bélières
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique (IMRCP)
- UMR 5623
- Université Paul Sabatier
- 31062 Toulouse cedex
- France
| | - N. Chouini-Lalanne
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique (IMRCP)
- UMR 5623
- Université Paul Sabatier
- 31062 Toulouse cedex
- France
| | - C. Déjugnat
- Laboratoire des Interactions Moléculaires et Réactivité Chimique et Photochimique (IMRCP)
- UMR 5623
- Université Paul Sabatier
- 31062 Toulouse cedex
- France
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32
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Bosch S, Comba P, Gahan LR, Schenk G. Dinuclear Zinc(II) Complexes with Hydrogen Bond Donors as Structural and Functional Phosphatase Models. Inorg Chem 2014; 53:9036-51. [DOI: 10.1021/ic5009945] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Simone Bosch
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, D-69120, Heidelberg, Germany
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, QLD 4072, Australia
| | - Peter Comba
- Anorganisch-Chemisches Institut, Universität Heidelberg, INF 270, D-69120, Heidelberg, Germany
| | - Lawrence R. Gahan
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, QLD 4072, Australia
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, University of Queensland, Brisbane, QLD 4072, Australia
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33
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Zulkefeli M, Hisamatsu Y, Suzuki A, Miyazawa Y, Shiro M, Aoki S. Supramolecular Phosphatases Formed by the Self-Assembly of the Bis(Zn2+-Cyclen) Complex, Copper(II), and Barbital Derivatives in Water. Chem Asian J 2014; 9:2831-41. [DOI: 10.1002/asia.201402513] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 06/05/2014] [Indexed: 01/19/2023]
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34
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Daumann LJ, Schenk G, Gahan LR. Metallo-β-lactamases and Their Biomimetic Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402203] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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35
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Comba P, Dovalil N, Gahan LR, Hanson GR, Westphal M. Cyclic peptide marine metabolites and CuII. Dalton Trans 2014; 43:1935-56. [DOI: 10.1039/c3dt52664j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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36
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Daumann LJ, Schenk G, Ollis DL, Gahan LR. Spectroscopic and mechanistic studies of dinuclear metallohydrolases and their biomimetic complexes. Dalton Trans 2013; 43:910-28. [PMID: 24135968 DOI: 10.1039/c3dt52287c] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enhanced understanding of the metal ion binding and active site structural features of phosphoesterases such as the glycerophosphodiesterase from Enterobacter aerogenes (GpdQ), and the organophosphate degrading agent from Agrobacterium radiobacter (OpdA) have important consequences for potential applications. Coupled with investigations of the metalloenzymes, programs of study to synthesise and characterise model complexes based on these metalloenzymes can add to our understanding of structure and function of the enzymes themselves. This review summarises some of our work and illustrates the significance and contributions of model studies to knowledge in the area.
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Affiliation(s)
- Lena J Daumann
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD 4072, Australia.
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37
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Horn A, Fernandes C, Parrilha GL, Kanashiro MM, Borges FV, de Melo EJT, Schenk G, Terenzi H, Pich CT. Highly efficient synthetic iron-dependent nucleases activate both intrinsic and extrinsic apoptotic death pathways in leukemia cancer cells. J Inorg Biochem 2013; 128:38-47. [PMID: 23933562 DOI: 10.1016/j.jinorgbio.2013.07.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2013] [Revised: 07/01/2013] [Accepted: 07/08/2013] [Indexed: 12/28/2022]
Abstract
The nuclease activity and the cytotoxicity toward human leukemia cancer cells of iron complexes, [Fe(HPClNOL)Cl2]NO3 (1), [Cl(HPClNOL)Fe(μ-O)Fe(HPClNOL)Cl]Cl2·2H2O (2), and [(SO4)(HPClNOL)Fe(μ-O)Fe(HPClNOL)(SO4)]·6H2O (3) (HPClNOL=1-(bis-pyridin-2-ylmethyl-amino)-3-chloropropan-2-ol), were investigated. Each complex was able to promote plasmid DNA cleavage and change the supercoiled form of the plasmid to circular and linear ones. Kinetic data revealed that (1), (2) and (3) increase the rate of DNA hydrolysis about 278, 192 and 339 million-fold, respectively. The activity of the complexes was inhibited by distamycin, indicating that they interact with the minor groove of the DNA. The cytotoxic activity of the complexes toward U937, HL-60, Jukart and THP-1 leukemia cancer cells was studied employing 3-(4,5-dimethythiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT), fluorescence and electronic transmission microscopies, flow cytometry and a cytochrome C release assay. Compound (2) has the highest activity toward cancer cells and is the least toxic for normal ones (i.e. peripheral blood mononuclear cells (PBMCs)). In contrast, compound (1) is the least active toward cancer cells but displays the highest toxicity toward normal cells. Transmission electronic microscopy indicates that cell death shows features typical of apoptotic cells, which was confirmed using the annexin V-FITC/PI (fluorescein isothiocyanate/propidium iodide) assay. Furthermore, our data demonstrate that at an early stage during the treatment with complex (2) mitochondria lose their transmembrane potential, resulting in cytochrome C release. A quantification of caspases 3, 9 (intrinsic apoptosis pathway) and caspase 8 (extrinsic apoptosis pathway) indicated that both the intrinsic (via mitochondria) and extrinsic (via death receptors) pathways are involved in the apoptotic stimuli.
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Affiliation(s)
- Adolfo Horn
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Campos dos Goytacazes, 28013-602 RJ, Brazil.
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38
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de Souza B, Kreft GL, Bortolotto T, Terenzi H, Bortoluzzi AJ, Castellano EE, Peralta RA, Domingos JB, Neves A. Second-Coordination-Sphere Effects Increase the Catalytic Efficiency of an Extended Model for FeIIIMII Purple Acid Phosphatases. Inorg Chem 2013; 52:3594-6. [DOI: 10.1021/ic400025j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
| | | | | | | | | | - Eduardo E. Castellano
- Departamento de Física e Informática,
Universidade de São Paulo, São Carlos 13566-590, Brazil
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39
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Hernández-Gil J, Ferrer S, Salvador E, Calvo J, Garcia-España E, Mareque-Rivas JC. A dinucleating ligand which promotes DNA cleavage with one and without a transition metal ion. Chem Commun (Camb) 2013; 49:3655-7. [DOI: 10.1039/c3cc39067e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Zhao M, Wang HB, Ji LN, Mao ZW. Insights into metalloenzyme microenvironments: biomimetic metal complexes with a functional second coordination sphere. Chem Soc Rev 2013; 42:8360-75. [DOI: 10.1039/c3cs60162e] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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41
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Tang YY, Ding CX, Ng SW, Xie YS. Syntheses, structures and photoluminescence of Zn(ii), Ag(i), Cu(i) and Co(ii) coordination polymers of a tetrapyridyl ligand. RSC Adv 2013. [DOI: 10.1039/c3ra43405b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Comba P, Gahan LR, Mereacre V, Hanson GR, Powell AK, Schenk G, Zajaczkowski-Fischer M. Spectroscopic Characterization of the Active FeIIIFeIII and FeIIIFeII Forms of a Purple Acid Phosphatase Model System. Inorg Chem 2012; 51:12195-209. [DOI: 10.1021/ic301347t] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Peter Comba
- Universität Heidelberg, Anorganisch-Chemisches Institut, INF 270,
D-69120 Heidelberg, Germany
| | - Lawrence R. Gahan
- School of Chemistry and Molecular
Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
| | - Valeriu Mereacre
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie, Enesserstrasse 15, D-76131 Karlsruhe, Germany
| | - Graeme R. Hanson
- Centre for Advanced Imaging, The University of Queensland, Brisbane, Queensland
4072, Australia
| | - Annie K. Powell
- Institut für Anorganische
Chemie, Karlsruher Institut für Technologie, Enesserstrasse 15, D-76131 Karlsruhe, Germany
| | - Gerhard Schenk
- School of Chemistry and Molecular
Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
- Department
of Chemistry, National University of Ireland, Maynooth, Co. Kildare,
Ireland
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Smith SJ, Peralta RA, Jovito R, Horn A, Bortoluzzi AJ, Noble CJ, Hanson GR, Stranger R, Jayaratne V, Cavigliasso G, Gahan LR, Schenk G, Nascimento OR, Cavalett A, Bortolotto T, Razzera G, Terenzi H, Neves A, Riley MJ. Spectroscopic and Catalytic Characterization of a Functional FeIIIFeII Biomimetic for the Active Site of Uteroferrin and Protein Cleavage. Inorg Chem 2012; 51:2065-78. [DOI: 10.1021/ic201711p] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
| | | | | | | | | | | | | | - Robert Stranger
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
| | - Vidura Jayaratne
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
| | - Germán Cavigliasso
- Research School of Chemistry, Australian National University, Canberra 0200, Australia
| | | | - Gerhard Schenk
- Department of Chemistry, National University of Ireland—Maynooth, Maynooth County, Kildare, Ireland
| | - Otaciro R. Nascimento
- Instituto de Física, Universidade de São Paulo, 13560-970 São
Carlos, São Paulo, Brazil
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Jayapal P, Rajaraman G. On the controversy of metal ion composition on amine oxygenase (AurF): a computational investigation. Phys Chem Chem Phys 2012; 14:9050-3. [DOI: 10.1039/c2cp40874k] [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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Comba P, Gahan LR, Hanson GR, Westphal M. Phosphatase reactivity of a dicopper(ii) complex of a patellamide derivative – possible biological functions of cyclic pseudopeptides. Chem Commun (Camb) 2012; 48:9364-6. [DOI: 10.1039/c2cc34836e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Copper(II) and zinc(II) chemistry of a new hexadentate cyclam-based bis-di-2-pyridylmethanamine ligand. J INCL PHENOM MACRO 2011. [DOI: 10.1007/s10847-011-9967-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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